Updated license headers

Project: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/repo
Commit: 
http://git-wip-us.apache.org/repos/asf/incubator-hivemall/commit/e44a413e
Tree: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/tree/e44a413e
Diff: http://git-wip-us.apache.org/repos/asf/incubator-hivemall/diff/e44a413e

Branch: refs/heads/JIRA-22/pr-385
Commit: e44a413e5fd4270af53895fceec27ccff3d63a73
Parents: 67ba963
Author: myui <yuin...@gmail.com>
Authored: Mon Nov 21 19:02:27 2016 +0900
Committer: myui <yuin...@gmail.com>
Committed: Mon Nov 21 19:02:27 2016 +0900

----------------------------------------------------------------------
 .../hivemall/ftvec/selection/ChiSquareUDF.java  | 77 ++++++++++----------
 .../ftvec/selection/SignalNoiseRatioUDAF.java   | 39 +++++-----
 .../hivemall/tools/array/SelectKBestUDF.java    | 48 ++++++------
 .../tools/matrix/TransposeAndDotUDAF.java       | 38 +++++-----
 .../ftvec/selection/ChiSquareUDFTest.java       | 35 ++++-----
 .../selection/SignalNoiseRatioUDAFTest.java     | 36 ++++-----
 .../tools/array/SelectKBeatUDFTest.java         | 33 +++++----
 .../tools/matrix/TransposeAndDotUDAFTest.java   | 29 ++++----
 8 files changed, 171 insertions(+), 164 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/main/java/hivemall/ftvec/selection/ChiSquareUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/ftvec/selection/ChiSquareUDF.java 
b/core/src/main/java/hivemall/ftvec/selection/ChiSquareUDF.java
index 1583959..91742bc 100644
--- a/core/src/main/java/hivemall/ftvec/selection/ChiSquareUDF.java
+++ b/core/src/main/java/hivemall/ftvec/selection/ChiSquareUDF.java
@@ -1,20 +1,20 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.ftvec.selection;
 
@@ -22,11 +22,18 @@ import hivemall.utils.hadoop.HiveUtils;
 import hivemall.utils.hadoop.WritableUtils;
 import hivemall.utils.lang.Preconditions;
 import hivemall.utils.math.StatsUtils;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
 import org.apache.hadoop.hive.ql.exec.Description;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException;
 import org.apache.hadoop.hive.ql.metadata.HiveException;
+import org.apache.hadoop.hive.ql.udf.UDFType;
 import org.apache.hadoop.hive.ql.udf.generic.GenericUDF;
 import org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
@@ -34,15 +41,12 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
 import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-
 @Description(name = "chi2",
         value = "_FUNC_(array<array<number>> observed, array<array<number>> 
expected)"
                 + " - Returns chi2_val and p_val of each columns as 
<array<double>, array<double>>")
-public class ChiSquareUDF extends GenericUDF {
+@UDFType(deterministic = true, stateful = false)
+public final class ChiSquareUDF extends GenericUDF {
+
     private ListObjectInspector observedOI;
     private ListObjectInspector observedRowOI;
     private PrimitiveObjectInspector observedElOI;
@@ -61,27 +65,25 @@ public class ChiSquareUDF extends GenericUDF {
         if (OIs.length != 2) {
             throw new UDFArgumentLengthException("Specify two arguments.");
         }
-
         if (!HiveUtils.isNumberListListOI(OIs[0])) {
             throw new UDFArgumentTypeException(0,
                 "Only array<array<number>> type argument is acceptable but " + 
OIs[0].getTypeName()
                         + " was passed as `observed`");
         }
-
         if (!HiveUtils.isNumberListListOI(OIs[1])) {
             throw new UDFArgumentTypeException(1,
                 "Only array<array<number>> type argument is acceptable but " + 
OIs[1].getTypeName()
                         + " was passed as `expected`");
         }
 
-        observedOI = HiveUtils.asListOI(OIs[1]);
-        observedRowOI = 
HiveUtils.asListOI(observedOI.getListElementObjectInspector());
-        observedElOI = 
HiveUtils.asDoubleCompatibleOI(observedRowOI.getListElementObjectInspector());
-        expectedOI = HiveUtils.asListOI(OIs[0]);
-        expectedRowOI = 
HiveUtils.asListOI(expectedOI.getListElementObjectInspector());
-        expectedElOI = 
HiveUtils.asDoubleCompatibleOI(expectedRowOI.getListElementObjectInspector());
+        this.observedOI = HiveUtils.asListOI(OIs[1]);
+        this.observedRowOI = 
HiveUtils.asListOI(observedOI.getListElementObjectInspector());
+        this.observedElOI = 
HiveUtils.asDoubleCompatibleOI(observedRowOI.getListElementObjectInspector());
+        this.expectedOI = HiveUtils.asListOI(OIs[0]);
+        this.expectedRowOI = 
HiveUtils.asListOI(expectedOI.getListElementObjectInspector());
+        this.expectedElOI = 
HiveUtils.asDoubleCompatibleOI(expectedRowOI.getListElementObjectInspector());
 
-        final List<ObjectInspector> fieldOIs = new 
ArrayList<ObjectInspector>();
+        List<ObjectInspector> fieldOIs = new ArrayList<ObjectInspector>();
         
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector));
         
fieldOIs.add(ObjectInspectorFactory.getStandardListObjectInspector(PrimitiveObjectInspectorFactory.writableDoubleObjectInspector));
 
@@ -90,25 +92,26 @@ public class ChiSquareUDF extends GenericUDF {
     }
 
     @Override
-    public Object evaluate(GenericUDF.DeferredObject[] dObj) throws 
HiveException {
-        List observedObj = observedOI.getList(dObj[0].get()); // shape = 
(#classes, #features)
-        List expectedObj = expectedOI.getList(dObj[1].get()); // shape = 
(#classes, #features)
+    public Object[] evaluate(DeferredObject[] dObj) throws HiveException {
+        List<?> observedObj = observedOI.getList(dObj[0].get()); // shape = 
(#classes, #features)
+        List<?> expectedObj = expectedOI.getList(dObj[1].get()); // shape = 
(#classes, #features)
+
+        if (observedObj == null || expectedObj == null) {
+            return null;
+        }
 
-        Preconditions.checkNotNull(observedObj);
-        Preconditions.checkNotNull(expectedObj);
         final int nClasses = observedObj.size();
         Preconditions.checkArgument(nClasses == expectedObj.size()); // same 
#rows
 
         // explode and transpose matrix
         for (int i = 0; i < nClasses; i++) {
-            final Object observedObjRow = observedObj.get(i);
-            final Object expectedObjRow = expectedObj.get(i);
+            Object observedObjRow = observedObj.get(i);
+            Object expectedObjRow = expectedObj.get(i);
 
             Preconditions.checkNotNull(observedObjRow);
             Preconditions.checkNotNull(expectedObjRow);
 
             if (observedRow == null) {
-                // init
                 observedRow = HiveUtils.asDoubleArray(observedObjRow, 
observedRowOI, observedElOI,
                     false);
                 expectedRow = HiveUtils.asDoubleArray(expectedObjRow, 
expectedRowOI, expectedElOI,

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/main/java/hivemall/ftvec/selection/SignalNoiseRatioUDAF.java
----------------------------------------------------------------------
diff --git 
a/core/src/main/java/hivemall/ftvec/selection/SignalNoiseRatioUDAF.java 
b/core/src/main/java/hivemall/ftvec/selection/SignalNoiseRatioUDAF.java
index 96fdc5b..1727d2e 100644
--- a/core/src/main/java/hivemall/ftvec/selection/SignalNoiseRatioUDAF.java
+++ b/core/src/main/java/hivemall/ftvec/selection/SignalNoiseRatioUDAF.java
@@ -1,26 +1,31 @@
 /*
- * 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
  *
- * Copyright (C) 2015 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.ftvec.selection;
 
 import hivemall.utils.hadoop.HiveUtils;
 import hivemall.utils.hadoop.WritableUtils;
 import hivemall.utils.lang.Preconditions;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 import org.apache.hadoop.hive.ql.exec.Description;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException;
@@ -42,13 +47,10 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.LongObjectInspect
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
 @Description(name = "snr", value = "_FUNC_(array<number> features, array<int> 
one-hot class label)"
         + " - Returns SNR values of each feature as array<double>")
 public class SignalNoiseRatioUDAF extends AbstractGenericUDAFResolver {
+
     @Override
     public GenericUDAFEvaluator getEvaluator(GenericUDAFParameterInfo info)
             throws SemanticException {
@@ -248,7 +250,6 @@ public class SignalNoiseRatioUDAF extends 
AbstractGenericUDAFResolver {
             final int nClasses = ns.size();
             final int nFeatures = meansOI.getListLength(meanss.get(0));
             if (myAgg.ns == null) {
-                // init
                 myAgg.init(nClasses, nFeatures);
             }
             for (int i = 0; i < nClasses; i++) {

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/main/java/hivemall/tools/array/SelectKBestUDF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/array/SelectKBestUDF.java 
b/core/src/main/java/hivemall/tools/array/SelectKBestUDF.java
index bdab5bb..0a383eb 100644
--- a/core/src/main/java/hivemall/tools/array/SelectKBestUDF.java
+++ b/core/src/main/java/hivemall/tools/array/SelectKBestUDF.java
@@ -1,25 +1,33 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.tools.array;
 
 import hivemall.utils.hadoop.HiveUtils;
 import hivemall.utils.lang.Preconditions;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.Map;
+
 import org.apache.hadoop.hive.ql.exec.Description;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException;
@@ -31,21 +39,9 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
 import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
-import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.DoubleObjectInspector;
-import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.IntObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils;
 
-import java.util.AbstractMap;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 @Description(name = "select_k_best",
         value = "_FUNC_(array<number> array, const array<number> 
importance_list, const int k)"
                 + " - Returns selected top-k elements as array<double>")

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
----------------------------------------------------------------------
diff --git a/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java 
b/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
index 9df9305..5925a0c 100644
--- a/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
+++ b/core/src/main/java/hivemall/tools/matrix/TransposeAndDotUDAF.java
@@ -1,26 +1,31 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.tools.matrix;
 
 import hivemall.utils.hadoop.HiveUtils;
 import hivemall.utils.hadoop.WritableUtils;
 import hivemall.utils.lang.Preconditions;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
 import org.apache.hadoop.hive.ql.exec.Description;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentLengthException;
 import org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException;
@@ -37,15 +42,12 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.DoubleObjectInspector;
 import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
 @Description(
         name = "transpose_and_dot",
         value = "_FUNC_(array<number> matrix0_row, array<number> matrix1_row)"
                 + " - Returns dot(matrix0.T, matrix1) as array<array<double>>, 
shape = (matrix0.#cols, matrix1.#cols)")
 public final class TransposeAndDotUDAF extends AbstractGenericUDAFResolver {
+
     @Override
     public GenericUDAFEvaluator getEvaluator(GenericUDAFParameterInfo info)
             throws SemanticException {

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/test/java/hivemall/ftvec/selection/ChiSquareUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/ftvec/selection/ChiSquareUDFTest.java 
b/core/src/test/java/hivemall/ftvec/selection/ChiSquareUDFTest.java
index d5880b8..64e7693 100644
--- a/core/src/test/java/hivemall/ftvec/selection/ChiSquareUDFTest.java
+++ b/core/src/test/java/hivemall/ftvec/selection/ChiSquareUDFTest.java
@@ -1,24 +1,28 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.ftvec.selection;
 
 import hivemall.utils.hadoop.WritableUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.hadoop.hive.ql.udf.generic.GenericUDF;
 import org.apache.hadoop.hive.serde2.io.DoubleWritable;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
@@ -27,9 +31,6 @@ import 
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectIn
 import org.junit.Assert;
 import org.junit.Test;
 
-import java.util.ArrayList;
-import java.util.List;
-
 public class ChiSquareUDFTest {
 
     @Test

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/test/java/hivemall/ftvec/selection/SignalNoiseRatioUDAFTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/hivemall/ftvec/selection/SignalNoiseRatioUDAFTest.java 
b/core/src/test/java/hivemall/ftvec/selection/SignalNoiseRatioUDAFTest.java
index a4744d9..ec08344 100644
--- a/core/src/test/java/hivemall/ftvec/selection/SignalNoiseRatioUDAFTest.java
+++ b/core/src/test/java/hivemall/ftvec/selection/SignalNoiseRatioUDAFTest.java
@@ -1,24 +1,28 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.ftvec.selection;
 
 import hivemall.utils.hadoop.WritableUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
 import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
 import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
 import org.apache.hadoop.hive.ql.udf.generic.SimpleGenericUDAFParameterInfo;
@@ -32,10 +36,8 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
-import java.util.ArrayList;
-import java.util.List;
-
 public class SignalNoiseRatioUDAFTest {
+
     @Rule
     public ExpectedException expectedException = ExpectedException.none();
 

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/test/java/hivemall/tools/array/SelectKBeatUDFTest.java
----------------------------------------------------------------------
diff --git a/core/src/test/java/hivemall/tools/array/SelectKBeatUDFTest.java 
b/core/src/test/java/hivemall/tools/array/SelectKBeatUDFTest.java
index b86db5c..da080ef 100644
--- a/core/src/test/java/hivemall/tools/array/SelectKBeatUDFTest.java
+++ b/core/src/test/java/hivemall/tools/array/SelectKBeatUDFTest.java
@@ -1,24 +1,27 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.tools.array;
 
 import hivemall.utils.hadoop.WritableUtils;
+
+import java.util.List;
+
 import org.apache.hadoop.hive.ql.udf.generic.GenericUDF;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorFactory;
@@ -27,8 +30,6 @@ import org.apache.hadoop.io.IntWritable;
 import org.junit.Assert;
 import org.junit.Test;
 
-import java.util.List;
-
 public class SelectKBeatUDFTest {
 
     @Test

http://git-wip-us.apache.org/repos/asf/incubator-hivemall/blob/e44a413e/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
----------------------------------------------------------------------
diff --git 
a/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java 
b/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
index 93c6ef1..f705a89 100644
--- a/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
+++ b/core/src/test/java/hivemall/tools/matrix/TransposeAndDotUDAFTest.java
@@ -1,24 +1,25 @@
 /*
- * 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
  *
- * Copyright (C) 2016 Makoto YUI
- * Copyright (C) 2013-2015 National Institute of Advanced Industrial Science 
and Technology (AIST)
+ *   http://www.apache.org/licenses/LICENSE-2.0
  *
- * Licensed 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.
+ * 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.
  */
 package hivemall.tools.matrix;
 
 import hivemall.utils.hadoop.WritableUtils;
+
 import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator;
 import org.apache.hadoop.hive.ql.udf.generic.SimpleGenericUDAFParameterInfo;
 import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;

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