Updated license headers of *.md

Project: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/repo
Commit: 
http://git-wip-us.apache.org/repos/asf/incubator-hivemall/commit/fc97a52e
Tree: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/tree/fc97a52e
Diff: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/diff/fc97a52e

Branch: refs/heads/master
Commit: fc97a52eadd512edfb368c6a6b81455a99a534da
Parents: 24f1779
Author: myui <[email protected]>
Authored: Mon Nov 7 14:49:10 2016 +0900
Committer: myui <[email protected]>
Committed: Mon Nov 7 14:49:10 2016 +0900

----------------------------------------------------------------------
 README.md                                       | 23 ++++++++++++++++++--
 docs/gitbook/README.md                          | 19 ++++++++++++++++
 docs/gitbook/SUMMARY.md                         | 19 ++++++++++++++++
 docs/gitbook/anomaly/lof.md                     | 19 ++++++++++++++++
 docs/gitbook/binaryclass/a9a.md                 | 19 ++++++++++++++++
 docs/gitbook/binaryclass/a9a_dataset.md         | 19 ++++++++++++++++
 docs/gitbook/binaryclass/a9a_lr.md              | 19 ++++++++++++++++
 docs/gitbook/binaryclass/a9a_minibatch.md       | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010a.md            | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010a_dataset.md    | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010a_scw.md        | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010b.md            | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010b_arow.md       | 19 ++++++++++++++++
 docs/gitbook/binaryclass/kdd2010b_dataset.md    | 19 ++++++++++++++++
 docs/gitbook/binaryclass/news20.md              | 19 ++++++++++++++++
 docs/gitbook/binaryclass/news20_adagrad.md      | 19 ++++++++++++++++
 docs/gitbook/binaryclass/news20_dataset.md      | 19 ++++++++++++++++
 docs/gitbook/binaryclass/news20_pa.md           | 19 ++++++++++++++++
 docs/gitbook/binaryclass/news20_scw.md          | 19 ++++++++++++++++
 docs/gitbook/binaryclass/webspam.md             | 19 ++++++++++++++++
 docs/gitbook/binaryclass/webspam_dataset.md     | 19 ++++++++++++++++
 docs/gitbook/binaryclass/webspam_scw.md         | 19 ++++++++++++++++
 docs/gitbook/eval/datagen.md                    | 19 ++++++++++++++++
 docs/gitbook/eval/lr_datagen.md                 | 19 ++++++++++++++++
 docs/gitbook/eval/stat_eval.md                  | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/ft_trans.md         | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/hashing.md          | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/quantify.md         | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/scaling.md          | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/tfidf.md            | 19 ++++++++++++++++
 docs/gitbook/ft_engineering/vectorizer.md       | 19 ++++++++++++++++
 docs/gitbook/getting_started/README.md          | 19 ++++++++++++++++
 docs/gitbook/getting_started/input-format.md    | 19 ++++++++++++++++
 docs/gitbook/getting_started/installation.md    | 19 ++++++++++++++++
 .../getting_started/permanent-functions.md      | 19 ++++++++++++++++
 docs/gitbook/misc/generic_funcs.md              | 19 ++++++++++++++++
 docs/gitbook/misc/tokenizer.md                  | 19 ++++++++++++++++
 docs/gitbook/misc/topk.md                       | 19 ++++++++++++++++
 docs/gitbook/multiclass/iris.md                 | 19 ++++++++++++++++
 docs/gitbook/multiclass/iris_dataset.md         | 19 ++++++++++++++++
 docs/gitbook/multiclass/iris_randomforest.md    | 19 ++++++++++++++++
 docs/gitbook/multiclass/iris_scw.md             | 19 ++++++++++++++++
 docs/gitbook/multiclass/news20.md               | 19 ++++++++++++++++
 docs/gitbook/multiclass/news20_dataset.md       | 19 ++++++++++++++++
 docs/gitbook/multiclass/news20_ensemble.md      | 19 ++++++++++++++++
 .../multiclass/news20_one-vs-the-rest.md        | 19 ++++++++++++++++
 .../news20_one-vs-the-rest_dataset.md           | 19 ++++++++++++++++
 docs/gitbook/multiclass/news20_pa.md            | 19 ++++++++++++++++
 docs/gitbook/multiclass/news20_scw.md           | 19 ++++++++++++++++
 docs/gitbook/recommend/cf.md                    | 19 ++++++++++++++++
 docs/gitbook/recommend/item_based_cf.md         | 19 ++++++++++++++++
 docs/gitbook/recommend/movielens.md             | 19 ++++++++++++++++
 docs/gitbook/recommend/movielens_cv.md          | 19 ++++++++++++++++
 docs/gitbook/recommend/movielens_dataset.md     | 19 ++++++++++++++++
 docs/gitbook/recommend/movielens_fm.md          | 19 ++++++++++++++++
 docs/gitbook/recommend/movielens_mf.md          | 19 ++++++++++++++++
 docs/gitbook/recommend/news20.md                | 19 ++++++++++++++++
 docs/gitbook/recommend/news20_bbit_minhash.md   | 19 ++++++++++++++++
 docs/gitbook/recommend/news20_jaccard.md        | 19 ++++++++++++++++
 docs/gitbook/recommend/news20_knn.md            | 19 ++++++++++++++++
 docs/gitbook/regression/e2006.md                | 19 ++++++++++++++++
 docs/gitbook/regression/e2006_arow.md           | 19 ++++++++++++++++
 docs/gitbook/regression/e2006_dataset.md        | 19 ++++++++++++++++
 docs/gitbook/regression/kddcup12tr2.md          | 19 ++++++++++++++++
 docs/gitbook/regression/kddcup12tr2_adagrad.md  | 19 ++++++++++++++++
 docs/gitbook/regression/kddcup12tr2_dataset.md  | 19 ++++++++++++++++
 docs/gitbook/regression/kddcup12tr2_lr.md       | 19 ++++++++++++++++
 .../regression/kddcup12tr2_lr_amplify.md        | 19 ++++++++++++++++
 docs/gitbook/tips/README.md                     | 19 ++++++++++++++++
 docs/gitbook/tips/addbias.md                    | 19 ++++++++++++++++
 docs/gitbook/tips/emr.md                        | 19 ++++++++++++++++
 docs/gitbook/tips/ensemble_learning.md          | 19 ++++++++++++++++
 docs/gitbook/tips/general_tips.md               | 19 ++++++++++++++++
 docs/gitbook/tips/hadoop_tuning.md              | 19 ++++++++++++++++
 docs/gitbook/tips/mixserver.md                  | 19 ++++++++++++++++
 docs/gitbook/tips/rand_amplify.md               | 19 ++++++++++++++++
 docs/gitbook/tips/rowid.md                      | 19 ++++++++++++++++
 docs/gitbook/tips/rt_prediction.md              | 19 ++++++++++++++++
 docs/gitbook/troubleshooting/README.md          | 19 ++++++++++++++++
 docs/gitbook/troubleshooting/asterisk.md        | 19 ++++++++++++++++
 .../troubleshooting/mapjoin_classcastex.md      | 19 ++++++++++++++++
 .../troubleshooting/mapjoin_task_error.md       | 19 ++++++++++++++++
 docs/gitbook/troubleshooting/num_mappers.md     | 19 ++++++++++++++++
 docs/gitbook/troubleshooting/oom.md             | 19 ++++++++++++++++
 pom.xml                                         |  5 +++++
 resources/header-definition.xml                 | 12 ++++++++++
 86 files changed, 1615 insertions(+), 2 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/README.md
----------------------------------------------------------------------
diff --git a/README.md b/README.md
index 75ad6cd..79333aa 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,24 @@
-Hivemall: Hive scalable machine learning library
-=================================================
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+
+Apache Hivemall: Hive scalable machine learning library
+=======================================================
 [![Build 
Status](https://travis-ci.org/myui/hivemall.svg?branch=master)](https://travis-ci.org/myui/hivemall)
 
[![Coversity](https://scan.coverity.com/projects/4549/badge.svg)](https://scan.coverity.com/projects/4549)
 [![Documentation 
Status](https://readthedocs.org/projects/hivemall-docs/badge/?version=latest)](https://readthedocs.org/projects/hivemall-docs/?badge=latest)

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/README.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/README.md b/docs/gitbook/README.md
index 82602f8..7b61570 100644
--- a/docs/gitbook/README.md
+++ b/docs/gitbook/README.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Introduction
 
 <div class="alert alert-info">

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/SUMMARY.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/SUMMARY.md b/docs/gitbook/SUMMARY.md
index d85f952..7ef1b9b 100644
--- a/docs/gitbook/SUMMARY.md
+++ b/docs/gitbook/SUMMARY.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Summary
 
 ## TABLE OF CONTENTS

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/anomaly/lof.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/anomaly/lof.md b/docs/gitbook/anomaly/lof.md
index f8f0b61..48990f8 100644
--- a/docs/gitbook/anomaly/lof.md
+++ b/docs/gitbook/anomaly/lof.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This article introduce how to find outliers using [Local Outlier Detection 
(LOF)](http://en.wikipedia.org/wiki/Local_outlier_factor) on Hivemall.
 
 # Data Preparation

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/a9a.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/a9a.md b/docs/gitbook/binaryclass/a9a.md
index e69de29..2959148 100644
--- a/docs/gitbook/binaryclass/a9a.md
+++ b/docs/gitbook/binaryclass/a9a.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/a9a_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/a9a_dataset.md 
b/docs/gitbook/binaryclass/a9a_dataset.md
index 28bcd57..76ccb0d 100644
--- a/docs/gitbook/binaryclass/a9a_dataset.md
+++ b/docs/gitbook/binaryclass/a9a_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 a9a
 ===
 http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#a9a

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/a9a_lr.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/a9a_lr.md 
b/docs/gitbook/binaryclass/a9a_lr.md
index 5029c49..17d91c0 100644
--- a/docs/gitbook/binaryclass/a9a_lr.md
+++ b/docs/gitbook/binaryclass/a9a_lr.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 a9a
 ===
 http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#a9a

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/a9a_minibatch.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/a9a_minibatch.md 
b/docs/gitbook/binaryclass/a9a_minibatch.md
index 714db6a..eaa7a06 100644
--- a/docs/gitbook/binaryclass/a9a_minibatch.md
+++ b/docs/gitbook/binaryclass/a9a_minibatch.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This page explains how to apply [Mini-Batch Gradient 
Descent](https://class.coursera.org/ml-003/lecture/106) for the training of 
logistic regression explained in [this 
example](https://github.com/myui/hivemall/wiki/a9a-binary-classification-(logistic-regression)).
 
 
 See [this 
page](https://github.com/myui/hivemall/wiki/a9a-binary-classification-(logistic-regression))
 first. This content depends on it.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010a.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010a.md 
b/docs/gitbook/binaryclass/kdd2010a.md
index e69de29..2959148 100644
--- a/docs/gitbook/binaryclass/kdd2010a.md
+++ b/docs/gitbook/binaryclass/kdd2010a.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010a_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010a_dataset.md 
b/docs/gitbook/binaryclass/kdd2010a_dataset.md
index 731d68b..ca221c3 100644
--- a/docs/gitbook/binaryclass/kdd2010a_dataset.md
+++ b/docs/gitbook/binaryclass/kdd2010a_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 [http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#kdd2010 
(algebra)](http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#kdd2010
 (algebra))
 
 * # of classes: 2

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010a_scw.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010a_scw.md 
b/docs/gitbook/binaryclass/kdd2010a_scw.md
index ee8fbba..5cb19fc 100644
--- a/docs/gitbook/binaryclass/kdd2010a_scw.md
+++ b/docs/gitbook/binaryclass/kdd2010a_scw.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # PA1
 ## Train
 ```sql

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010b.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010b.md 
b/docs/gitbook/binaryclass/kdd2010b.md
index e69de29..2959148 100644
--- a/docs/gitbook/binaryclass/kdd2010b.md
+++ b/docs/gitbook/binaryclass/kdd2010b.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010b_arow.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010b_arow.md 
b/docs/gitbook/binaryclass/kdd2010b_arow.md
index 7ac845a..2ca0d90 100644
--- a/docs/gitbook/binaryclass/kdd2010b_arow.md
+++ b/docs/gitbook/binaryclass/kdd2010b_arow.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 ## training
 ```sql
 -- SET mapred.reduce.tasks=32;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/kdd2010b_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/kdd2010b_dataset.md 
b/docs/gitbook/binaryclass/kdd2010b_dataset.md
index 5e26dba..41f0513 100644
--- a/docs/gitbook/binaryclass/kdd2010b_dataset.md
+++ b/docs/gitbook/binaryclass/kdd2010b_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 [http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#kdd2010 
(bridge to 
algebra)](http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#kdd2010
 (bridge to algebra))
 
 * # of classes: 2

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/news20.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/news20.md 
b/docs/gitbook/binaryclass/news20.md
index e69de29..2959148 100644
--- a/docs/gitbook/binaryclass/news20.md
+++ b/docs/gitbook/binaryclass/news20.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/news20_adagrad.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/news20_adagrad.md 
b/docs/gitbook/binaryclass/news20_adagrad.md
index 08e39df..cbcc0f2 100644
--- a/docs/gitbook/binaryclass/news20_adagrad.md
+++ b/docs/gitbook/binaryclass/news20_adagrad.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 _Note that this feature is supported since Hivemall v0.3-beta2 or later._
 
 ## UDF preparation

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/news20_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/news20_dataset.md 
b/docs/gitbook/binaryclass/news20_dataset.md
index 5ff80cd..87208cf 100644
--- a/docs/gitbook/binaryclass/news20_dataset.md
+++ b/docs/gitbook/binaryclass/news20_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Get the news20b dataset.
 
http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#news20.binary
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/news20_pa.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/news20_pa.md 
b/docs/gitbook/binaryclass/news20_pa.md
index 7763a15..df082b9 100644
--- a/docs/gitbook/binaryclass/news20_pa.md
+++ b/docs/gitbook/binaryclass/news20_pa.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 ## UDF preparation
 ```
 delete jar /home/myui/tmp/hivemall.jar;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/news20_scw.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/news20_scw.md 
b/docs/gitbook/binaryclass/news20_scw.md
index 0b27dab..fa1da7f 100644
--- a/docs/gitbook/binaryclass/news20_scw.md
+++ b/docs/gitbook/binaryclass/news20_scw.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 ## UDF preparation
 ```
 use news20;

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/webspam.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/webspam.md 
b/docs/gitbook/binaryclass/webspam.md
index e69de29..2959148 100644
--- a/docs/gitbook/binaryclass/webspam.md
+++ b/docs/gitbook/binaryclass/webspam.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/webspam_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/webspam_dataset.md 
b/docs/gitbook/binaryclass/webspam_dataset.md
index 4686865..40cac07 100644
--- a/docs/gitbook/binaryclass/webspam_dataset.md
+++ b/docs/gitbook/binaryclass/webspam_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Get the dataset from 
 http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/binary.html#webspam
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/binaryclass/webspam_scw.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/binaryclass/webspam_scw.md 
b/docs/gitbook/binaryclass/webspam_scw.md
index 635b32d..cadd0ab 100644
--- a/docs/gitbook/binaryclass/webspam_scw.md
+++ b/docs/gitbook/binaryclass/webspam_scw.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Preparation
 
 ```

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/eval/datagen.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/eval/datagen.md b/docs/gitbook/eval/datagen.md
index e69de29..2959148 100644
--- a/docs/gitbook/eval/datagen.md
+++ b/docs/gitbook/eval/datagen.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/eval/lr_datagen.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/eval/lr_datagen.md b/docs/gitbook/eval/lr_datagen.md
index 55cb360..8fa5239 100644
--- a/docs/gitbook/eval/lr_datagen.md
+++ b/docs/gitbook/eval/lr_datagen.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 _Note this feature is supported on hivemall v0.2-alpha3 or later._
 
 # create a dual table

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/eval/stat_eval.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/eval/stat_eval.md b/docs/gitbook/eval/stat_eval.md
index 7f1688b..6b0af8e 100644
--- a/docs/gitbook/eval/stat_eval.md
+++ b/docs/gitbook/eval/stat_eval.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Using the [E2006 tfidf regression 
example](https://github.com/myui/hivemall/wiki/E2006-tfidf-regression-evaluation-(PA,-AROW)),
 we explain how to evaluate the prediction model on Hive.
 
 # Scoring by evaluation metrics

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/ft_trans.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/ft_trans.md 
b/docs/gitbook/ft_engineering/ft_trans.md
index e69de29..2959148 100644
--- a/docs/gitbook/ft_engineering/ft_trans.md
+++ b/docs/gitbook/ft_engineering/ft_trans.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/hashing.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/hashing.md 
b/docs/gitbook/ft_engineering/hashing.md
index 09fa1ff..daf4a23 100644
--- a/docs/gitbook/ft_engineering/hashing.md
+++ b/docs/gitbook/ft_engineering/hashing.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Hivemall supports [Feature 
Hashing](https://github.com/myui/hivemall/wiki/Feature-hashing) (a.k.a. hashing 
trick) through `feature_hashing` and `mhash` functions. 
 Find the differences in the following examples.
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/quantify.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/quantify.md 
b/docs/gitbook/ft_engineering/quantify.md
index 1d6a223..952db53 100644
--- a/docs/gitbook/ft_engineering/quantify.md
+++ b/docs/gitbook/ft_engineering/quantify.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 `quantified_features` is useful for transforming values of non-number columns 
to indexed numbers.
 
 *Note: The feature is supported Hivemall v0.4 or later.*

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/scaling.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/scaling.md 
b/docs/gitbook/ft_engineering/scaling.md
index 6e7d312..26d82bd 100644
--- a/docs/gitbook/ft_engineering/scaling.md
+++ b/docs/gitbook/ft_engineering/scaling.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Min-Max Normalization
 http://en.wikipedia.org/wiki/Feature_scaling#Rescaling
 ```sql

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/tfidf.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/tfidf.md 
b/docs/gitbook/ft_engineering/tfidf.md
index e881e10..46e4fac 100644
--- a/docs/gitbook/ft_engineering/tfidf.md
+++ b/docs/gitbook/ft_engineering/tfidf.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This document explains how to compute 
[TF-IDF](http://en.wikipedia.org/wiki/Tf%E2%80%93idf) with Apache Hive/Hivemall.
 
 What you need to compute TF-IDF is a table/view composing (docid, word) pair, 
2 views, and 1 query.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/ft_engineering/vectorizer.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/ft_engineering/vectorizer.md 
b/docs/gitbook/ft_engineering/vectorizer.md
index bc929a5..59038d1 100644
--- a/docs/gitbook/ft_engineering/vectorizer.md
+++ b/docs/gitbook/ft_engineering/vectorizer.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 ## Feature Vectorizer
 
 `array<string> vectorize_feature(array<string> featureNames, ...)` is useful 
to generate a feature vector for each row, from a table.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/getting_started/README.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/getting_started/README.md 
b/docs/gitbook/getting_started/README.md
index 27870e5..98393aa 100644
--- a/docs/gitbook/getting_started/README.md
+++ b/docs/gitbook/getting_started/README.md
@@ -1 +1,20 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Summary
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/getting_started/input-format.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/getting_started/input-format.md 
b/docs/gitbook/getting_started/input-format.md
index 272d3eb..698c095 100644
--- a/docs/gitbook/getting_started/input-format.md
+++ b/docs/gitbook/getting_started/input-format.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This page explains the input format of training data in Hivemall. 
 Here, we use 
[EBNF](http://en.wikipedia.org/wiki/Extended_Backus%E2%80%93Naur_Form)-like 
notation for describing the format.
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/getting_started/installation.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/getting_started/installation.md 
b/docs/gitbook/getting_started/installation.md
index bb1920e..3a3c97f 100644
--- a/docs/gitbook/getting_started/installation.md
+++ b/docs/gitbook/getting_started/installation.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Prerequisites
 ============
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/getting_started/permanent-functions.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/getting_started/permanent-functions.md 
b/docs/gitbook/getting_started/permanent-functions.md
index aab399b..a4879c3 100644
--- a/docs/gitbook/getting_started/permanent-functions.md
+++ b/docs/gitbook/getting_started/permanent-functions.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Hive v0.13 or later supports [permanent 
functions](https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Create/DropFunction)
 that live across sessions.
 
 Permanent functions are useful when you are using Hive through Hiveserver or 
to avoid hivemall installation for each session.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/misc/generic_funcs.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/misc/generic_funcs.md 
b/docs/gitbook/misc/generic_funcs.md
index 1769699..9749dae 100644
--- a/docs/gitbook/misc/generic_funcs.md
+++ b/docs/gitbook/misc/generic_funcs.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This page describes a list of useful Hivemall generic functions.
 
 # Array functions

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/misc/tokenizer.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/misc/tokenizer.md b/docs/gitbook/misc/tokenizer.md
index cd2ce08..47f07e0 100644
--- a/docs/gitbook/misc/tokenizer.md
+++ b/docs/gitbook/misc/tokenizer.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Tokenizer for English Texts
 
 Hivemall provides simple English text tokenizer UDF that has following syntax:

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/misc/topk.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/misc/topk.md b/docs/gitbook/misc/topk.md
index dcd545a..3d072ed 100644
--- a/docs/gitbook/misc/topk.md
+++ b/docs/gitbook/misc/topk.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 `each_top_k(int k, ANY group, double value, arg1, arg2, ..., argN)` returns a 
top-k records for each `group`. It returns a relation consists of `(int rank, 
double value, arg1, arg2, .., argN)`.
 
 This function is particularly useful for applying a similarity/distance 
function where the computation complexity is **O(nm)**.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/iris.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/iris.md b/docs/gitbook/multiclass/iris.md
index e69de29..2959148 100644
--- a/docs/gitbook/multiclass/iris.md
+++ b/docs/gitbook/multiclass/iris.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/iris_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/iris_dataset.md 
b/docs/gitbook/multiclass/iris_dataset.md
index 86f89ad..38a6831 100644
--- a/docs/gitbook/multiclass/iris_dataset.md
+++ b/docs/gitbook/multiclass/iris_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Dataset prepration
 Iris Dataset: https://archive.ics.uci.edu/ml/datasets/Iris
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/iris_randomforest.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/iris_randomforest.md 
b/docs/gitbook/multiclass/iris_randomforest.md
index bafa338..fd85471 100644
--- a/docs/gitbook/multiclass/iris_randomforest.md
+++ b/docs/gitbook/multiclass/iris_randomforest.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 *NOTE: RandomForest is being supported from Hivemall v0.4 or later.*
 
 # Dataset

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/iris_scw.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/iris_scw.md 
b/docs/gitbook/multiclass/iris_scw.md
index bafa338..fd85471 100644
--- a/docs/gitbook/multiclass/iris_scw.md
+++ b/docs/gitbook/multiclass/iris_scw.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 *NOTE: RandomForest is being supported from Hivemall v0.4 or later.*
 
 # Dataset

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20.md 
b/docs/gitbook/multiclass/news20.md
index e69de29..2959148 100644
--- a/docs/gitbook/multiclass/news20.md
+++ b/docs/gitbook/multiclass/news20.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_dataset.md 
b/docs/gitbook/multiclass/news20_dataset.md
index 35ada12..96decec 100644
--- a/docs/gitbook/multiclass/news20_dataset.md
+++ b/docs/gitbook/multiclass/news20_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Get the news20 dataset.
 http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/multiclass.html#news20
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_ensemble.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_ensemble.md 
b/docs/gitbook/multiclass/news20_ensemble.md
index 9cfd35d..6bf1c93 100644
--- a/docs/gitbook/multiclass/news20_ensemble.md
+++ b/docs/gitbook/multiclass/news20_ensemble.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This example explains how to run ensemble learning in Hivemall.   
 Two heads are better than one? Let's verify it by ensemble learning.
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_one-vs-the-rest.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_one-vs-the-rest.md 
b/docs/gitbook/multiclass/news20_one-vs-the-rest.md
index 4c611d0..d98329f 100644
--- a/docs/gitbook/multiclass/news20_one-vs-the-rest.md
+++ b/docs/gitbook/multiclass/news20_one-vs-the-rest.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 A one-vs-the-rest classifier use the binary classifier for each class.
 
 ## UDF preparation

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_one-vs-the-rest_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_one-vs-the-rest_dataset.md 
b/docs/gitbook/multiclass/news20_one-vs-the-rest_dataset.md
index 2a69615..f437399 100644
--- a/docs/gitbook/multiclass/news20_one-vs-the-rest_dataset.md
+++ b/docs/gitbook/multiclass/news20_one-vs-the-rest_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 *One-vs-the-rest* is a multiclass classification method that uses binary 
classifiers independently for each class.
 http://en.wikipedia.org/wiki/Multiclass_classification#one_vs_all
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_pa.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_pa.md 
b/docs/gitbook/multiclass/news20_pa.md
index 8e69beb..26083f9 100644
--- a/docs/gitbook/multiclass/news20_pa.md
+++ b/docs/gitbook/multiclass/news20_pa.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 Preparation
 =========
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/multiclass/news20_scw.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/multiclass/news20_scw.md 
b/docs/gitbook/multiclass/news20_scw.md
index 330c163..f6f21af 100644
--- a/docs/gitbook/multiclass/news20_scw.md
+++ b/docs/gitbook/multiclass/news20_scw.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 | Algorithm | Accuracy |
 |:-----------|------------:|
 | PA2 | 0.8204357625845229 |

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/cf.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/cf.md b/docs/gitbook/recommend/cf.md
index e69de29..2959148 100644
--- a/docs/gitbook/recommend/cf.md
+++ b/docs/gitbook/recommend/cf.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/item_based_cf.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/item_based_cf.md 
b/docs/gitbook/recommend/item_based_cf.md
index a4a8cfd..2eb7890 100644
--- a/docs/gitbook/recommend/item_based_cf.md
+++ b/docs/gitbook/recommend/item_based_cf.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This document describe how to do Item-based Collaborative Filtering using 
Hivemall.
 
 _Caution: naive similarity computation is `O(n^2)` to compute all item-item 
pair similarity. 
[MinHash](https://en.wikipedia.org/wiki/MinHash#Jaccard_similarity_and_minimum_hash_values)
 is an efficient scheme for computing jaccard similarity. Section 6 show how to 
use MinHash in Hivemall._

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/movielens.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/movielens.md 
b/docs/gitbook/recommend/movielens.md
index e69de29..2959148 100644
--- a/docs/gitbook/recommend/movielens.md
+++ b/docs/gitbook/recommend/movielens.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/movielens_cv.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/movielens_cv.md 
b/docs/gitbook/recommend/movielens_cv.md
index ec2255b..a1f7b2f 100644
--- a/docs/gitbook/recommend/movielens_cv.md
+++ b/docs/gitbook/recommend/movielens_cv.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 
[Cross-validation](http://en.wikipedia.org/wiki/Cross-validation_(statistics)#k-fold_cross-validationk-fold
 cross validation) is a model validation technique for assessing how a 
prediction model will generalize to an independent data set. This example shows 
a way to perform [k-fold cross 
validation](http://en.wikipedia.org/wiki/Cross-validation_(statistics)#k-fold_cross-validation)
 to evaluate prediction performance.
 
 *Caution:* Matrix factorization is supported in Hivemall v0.3 or later.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/movielens_dataset.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/movielens_dataset.md 
b/docs/gitbook/recommend/movielens_dataset.md
index f175f4f..27c04ba 100644
--- a/docs/gitbook/recommend/movielens_dataset.md
+++ b/docs/gitbook/recommend/movielens_dataset.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Data preparation
 
 First, downlod MovieLens dataset from the following site.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/movielens_fm.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/movielens_fm.md 
b/docs/gitbook/recommend/movielens_fm.md
index 282e923..eac8013 100644
--- a/docs/gitbook/recommend/movielens_fm.md
+++ b/docs/gitbook/recommend/movielens_fm.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 _Caution: Factorization Machine is supported from Hivemall v0.4 or later._
 
 # Data preparation

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/movielens_mf.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/movielens_mf.md 
b/docs/gitbook/recommend/movielens_mf.md
index bc5c641..f275df8 100644
--- a/docs/gitbook/recommend/movielens_mf.md
+++ b/docs/gitbook/recommend/movielens_mf.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 This page explains how to run matrix factorization on [MovieLens 1M 
dataset](https://github.com/myui/hivemall/wiki/MovieLens-Dataset).
 
 *Caution:* Matrix factorization is supported in Hivemall v0.3 or later.

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/news20.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/news20.md b/docs/gitbook/recommend/news20.md
index e69de29..2959148 100644
--- a/docs/gitbook/recommend/news20.md
+++ b/docs/gitbook/recommend/news20.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/news20_bbit_minhash.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/news20_bbit_minhash.md 
b/docs/gitbook/recommend/news20_bbit_minhash.md
index 72ba7f2..474a40d 100644
--- a/docs/gitbook/recommend/news20_bbit_minhash.md
+++ b/docs/gitbook/recommend/news20_bbit_minhash.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Function Signature of bbit_minhash
 
 ```

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/news20_jaccard.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/news20_jaccard.md 
b/docs/gitbook/recommend/news20_jaccard.md
index ea6f8cc..6a30fb8 100644
--- a/docs/gitbook/recommend/news20_jaccard.md
+++ b/docs/gitbook/recommend/news20_jaccard.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 List related (similar) articles for each article.
 
 # Preparation

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/recommend/news20_knn.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/recommend/news20_knn.md 
b/docs/gitbook/recommend/news20_knn.md
index 0471a2e..1e0ae97 100644
--- a/docs/gitbook/recommend/news20_knn.md
+++ b/docs/gitbook/recommend/news20_knn.md
@@ -1,3 +1,22 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        
 # Extract clusters and assign N cluster IDs to each article
 ```
 create or replace view news20_cluster

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/fc97a52e/docs/gitbook/regression/e2006.md
----------------------------------------------------------------------
diff --git a/docs/gitbook/regression/e2006.md b/docs/gitbook/regression/e2006.md
index e69de29..2959148 100644
--- a/docs/gitbook/regression/e2006.md
+++ b/docs/gitbook/regression/e2006.md
@@ -0,0 +1,19 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+        


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