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class="custom-link"><i class="fa fa-home"></i> Home</a>
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-        <li class="chapter " data-level="1.1" data-path="../">
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-                <a href="../">
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-                        <b>1.1.</b>
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-                    Introduction
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-        <li class="chapter " data-level="1.2" data-path="../getting_started/">
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-                        <b>1.2.</b>
-                    
-                    Getting Started
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-        <li class="chapter " data-level="1.2.1" 
data-path="../getting_started/installation.html">
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-                        <b>1.2.1.</b>
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-                    Installation
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-                </a>
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-        <li class="chapter " data-level="1.2.2" 
data-path="../getting_started/permanent-functions.html">
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-                        <b>1.2.2.</b>
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-                    Install as permanent functions
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data-path="../getting_started/input-format.html">
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-                        <b>1.2.3.</b>
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-                    Input Format
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-        <li class="chapter " data-level="1.3" data-path="../tips/">
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-                        <b>1.3.</b>
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-                    Tips for Effective Hivemall
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-        <li class="chapter " data-level="1.3.1" 
data-path="../tips/addbias.html">
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-                        <b>1.3.1.</b>
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-                    Explicit addBias() for better prediction
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-        <li class="chapter " data-level="1.3.2" 
data-path="../tips/rand_amplify.html">
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-                        <b>1.3.2.</b>
-                    
-                    Use rand_amplify() to better prediction results
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-        <li class="chapter " data-level="1.3.3" 
data-path="../tips/rt_prediction.html">
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-                        <b>1.3.3.</b>
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-                    Real-time Prediction on RDBMS
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-        <li class="chapter " data-level="1.3.4" 
data-path="../tips/ensemble_learning.html">
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-                        <b>1.3.4.</b>
-                    
-                    Ensemble learning for stable prediction
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-        <li class="chapter " data-level="1.3.5" 
data-path="../tips/mixserver.html">
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-                        <b>1.3.5.</b>
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-                    Mixing models for a better prediction convergence (MIX 
server)
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-                        <b>1.3.6.</b>
-                    
-                    Run Hivemall on Amazon Elastic MapReduce
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data-path="../tips/general_tips.html">
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-                        <b>1.4.</b>
-                    
-                    General Hive/Hadoop tips
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-                        <b>1.4.1.</b>
-                    
-                    Adding rowid for each row
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data-path="../tips/hadoop_tuning.html">
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-                        <b>1.4.2.</b>
-                    
-                    Hadoop tuning for Hivemall
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-                        <b>1.5.</b>
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-                    Troubleshooting
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data-path="../troubleshooting/oom.html">
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-                        <b>1.5.1.</b>
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-                    OutOfMemoryError in training
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data-path="../troubleshooting/mapjoin_task_error.html">
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-                    
-                        <b>1.5.2.</b>
-                    
-                    SemanticException Generate Map Join Task Error: Cannot 
serialize object
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data-path="../troubleshooting/asterisk.html">
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-                        <b>1.5.3.</b>
-                    
-                    Asterisk argument for UDTF does not work
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-                </a>
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-        <li class="chapter " data-level="1.5.4" 
data-path="../troubleshooting/num_mappers.html">
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-                        <b>1.5.4.</b>
-                    
-                    The number of mappers is less than input splits in Hadoop 
2.x
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data-path="../troubleshooting/mapjoin_classcastex.html">
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-                        <b>1.5.5.</b>
-                    
-                    Map-side Join causes ClassCastException on Tez
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-    
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-        <li class="header">Part II - Generic Features</li>
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-        
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-        <li class="chapter " data-level="2.1" 
data-path="../misc/generic_funcs.html">
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-                <a href="../misc/generic_funcs.html">
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-                    
-                        <b>2.1.</b>
-                    
-                    List of generic Hivemall functions
-            
-                </a>
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-                        <b>2.2.</b>
-                    
-                    Efficient Top-K query processing
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data-path="../misc/tokenizer.html">
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-                        <b>2.3.</b>
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-                    English/Japanese Text Tokenizer
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-                        <b>3.1.</b>
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-                    Feature Scaling
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-                        <b>3.2.</b>
-                    
-                    Feature Hashing
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-            
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-        <li class="chapter " data-level="3.3" data-path="tfidf.html">
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-                        <b>3.3.</b>
-                    
-                    TF-IDF calculation
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-                        <b>3.4.</b>
-                    
-                    FEATURE TRANSFORMATION
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-                </a>
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data-path="vectorizer.html">
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-                        <b>3.4.1.</b>
-                    
-                    Vectorize Features
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-                </a>
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-        </li>
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-        <li class="chapter " data-level="3.4.2" data-path="quantify.html">
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-                <a href="quantify.html">
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-                        <b>3.4.2.</b>
-                    
-                    Quantify non-number features
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-        <li class="chapter " data-level="3.5" 
data-path="feature_selection.html">
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-                <a href="feature_selection.html">
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-                    
-                        <b>3.5.</b>
-                    
-                    Feature selection
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-
-    
-        
-        <li class="header">Part IV - Evaluation</li>
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-        <li class="chapter " data-level="4.1" 
data-path="../eval/stat_eval.html">
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-                <a href="../eval/stat_eval.html">
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-                    
-                        <b>4.1.</b>
-                    
-                    Statistical evaluation of a prediction model
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-                </a>
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-            <ul class="articles">
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-        <li class="chapter " data-level="4.1.1" data-path="../eval/auc.html">
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-                <a href="../eval/auc.html">
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-                        <b>4.1.1.</b>
-                    
-                    Area Under the ROC Curve
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-                </a>
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-
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-
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-        <li class="chapter " data-level="4.2" data-path="../eval/rank.html">
-            
-                <a href="../eval/rank.html">
-            
-                    
-                        <b>4.2.</b>
-                    
-                    Ranking Measures
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-                </a>
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-
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-        <li class="chapter " data-level="4.3" data-path="../eval/datagen.html">
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-                <a href="../eval/datagen.html">
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-                    
-                        <b>4.3.</b>
-                    
-                    Data Generation
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-                </a>
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-
-            
-            <ul class="articles">
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-    
-        <li class="chapter " data-level="4.3.1" 
data-path="../eval/lr_datagen.html">
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-                        <b>4.3.1.</b>
-                    
-                    Logistic Regression data generation
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-                </a>
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-
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-        </li>
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-
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-
-    
-        
-        <li class="header">Part V - Binary classification</li>
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-        
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-        <li class="chapter " data-level="5.1" 
data-path="../binaryclass/a9a.html">
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-                <a href="../binaryclass/a9a.html">
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-                    
-                        <b>5.1.</b>
-                    
-                    a9a Tutorial
-            
-                </a>
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-
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-            <ul class="articles">
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-        <li class="chapter " data-level="5.1.1" 
data-path="../binaryclass/a9a_dataset.html">
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-                <a href="../binaryclass/a9a_dataset.html">
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-                    
-                        <b>5.1.1.</b>
-                    
-                    Data preparation
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-                </a>
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-
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-        </li>
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-        <li class="chapter " data-level="5.1.2" 
data-path="../binaryclass/a9a_lr.html">
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-                <a href="../binaryclass/a9a_lr.html">
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-                    
-                        <b>5.1.2.</b>
-                    
-                    Logistic Regression
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-
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-        </li>
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-        <li class="chapter " data-level="5.1.3" 
data-path="../binaryclass/a9a_minibatch.html">
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-                <a href="../binaryclass/a9a_minibatch.html">
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-                        <b>5.1.3.</b>
-                    
-                    Mini-batch Gradient Descent
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-                </a>
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-
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-        </li>
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-
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data-path="../binaryclass/news20.html">
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-                        <b>5.2.</b>
-                    
-                    News20 Tutorial
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-                </a>
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-            <ul class="articles">
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-        <li class="chapter " data-level="5.2.1" 
data-path="../binaryclass/news20_dataset.html">
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-                <a href="../binaryclass/news20_dataset.html">
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-                    
-                        <b>5.2.1.</b>
-                    
-                    Data preparation
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-                </a>
-            
-
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data-path="../binaryclass/news20_pa.html">
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-                        <b>5.2.2.</b>
-                    
-                    Perceptron, Passive Aggressive
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-                </a>
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-
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data-path="../binaryclass/news20_scw.html">
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-                        <b>5.2.3.</b>
-                    
-                    CW, AROW, SCW
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-                </a>
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-
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-        </li>
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-        <li class="chapter " data-level="5.2.4" 
data-path="../binaryclass/news20_adagrad.html">
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-                        <b>5.2.4.</b>
-                    
-                    AdaGradRDA, AdaGrad, AdaDelta
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-                </a>
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-
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-        <li class="chapter " data-level="5.3" 
data-path="../binaryclass/kdd2010a.html">
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-                <a href="../binaryclass/kdd2010a.html">
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-                    
-                        <b>5.3.</b>
-                    
-                    KDD2010a Tutorial
-            
-                </a>
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data-path="../binaryclass/kdd2010a_dataset.html">
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-                <a href="../binaryclass/kdd2010a_dataset.html">
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-                    
-                        <b>5.3.1.</b>
-                    
-                    Data preparation
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-                </a>
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-
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-        </li>
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-        <li class="chapter " data-level="5.3.2" 
data-path="../binaryclass/kdd2010a_scw.html">
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-                        <b>5.3.2.</b>
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-                    PA, CW, AROW, SCW
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-                </a>
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data-path="../binaryclass/kdd2010b.html">
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-                        <b>5.4.</b>
-                    
-                    KDD2010b Tutorial
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data-path="../binaryclass/kdd2010b_dataset.html">
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-                    
-                        <b>5.4.1.</b>
-                    
-                    Data preparation
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-                </a>
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-
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-        </li>
-    
-        <li class="chapter " data-level="5.4.2" 
data-path="../binaryclass/kdd2010b_arow.html">
-            
-                <a href="../binaryclass/kdd2010b_arow.html">
-            
-                    
-                        <b>5.4.2.</b>
-                    
-                    AROW
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="5.5" 
data-path="../binaryclass/webspam.html">
-            
-                <a href="../binaryclass/webspam.html">
-            
-                    
-                        <b>5.5.</b>
-                    
-                    Webspam Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="5.5.1" 
data-path="../binaryclass/webspam_dataset.html">
-            
-                <a href="../binaryclass/webspam_dataset.html">
-            
-                    
-                        <b>5.5.1.</b>
-                    
-                    Data pareparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="5.5.2" 
data-path="../binaryclass/webspam_scw.html">
-            
-                <a href="../binaryclass/webspam_scw.html">
-            
-                    
-                        <b>5.5.2.</b>
-                    
-                    PA1, AROW, SCW
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="5.6" 
data-path="../binaryclass/titanic_rf.html">
-            
-                <a href="../binaryclass/titanic_rf.html">
-            
-                    
-                        <b>5.6.</b>
-                    
-                    Kaggle Titanic Tutorial
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part VI - Multiclass classification</li>
-        
-        
-    
-        <li class="chapter " data-level="6.1" 
data-path="../multiclass/news20.html">
-            
-                <a href="../multiclass/news20.html">
-            
-                    
-                        <b>6.1.</b>
-                    
-                    News20 Multiclass Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="6.1.1" 
data-path="../multiclass/news20_dataset.html">
-            
-                <a href="../multiclass/news20_dataset.html">
-            
-                    
-                        <b>6.1.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.1.2" 
data-path="../multiclass/news20_one-vs-the-rest_dataset.html">
-            
-                <a href="../multiclass/news20_one-vs-the-rest_dataset.html">
-            
-                    
-                        <b>6.1.2.</b>
-                    
-                    Data preparation for one-vs-the-rest classifiers
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.1.3" 
data-path="../multiclass/news20_pa.html">
-            
-                <a href="../multiclass/news20_pa.html">
-            
-                    
-                        <b>6.1.3.</b>
-                    
-                    PA
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.1.4" 
data-path="../multiclass/news20_scw.html">
-            
-                <a href="../multiclass/news20_scw.html">
-            
-                    
-                        <b>6.1.4.</b>
-                    
-                    CW, AROW, SCW
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.1.5" 
data-path="../multiclass/news20_ensemble.html">
-            
-                <a href="../multiclass/news20_ensemble.html">
-            
-                    
-                        <b>6.1.5.</b>
-                    
-                    Ensemble learning
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.1.6" 
data-path="../multiclass/news20_one-vs-the-rest.html">
-            
-                <a href="../multiclass/news20_one-vs-the-rest.html">
-            
-                    
-                        <b>6.1.6.</b>
-                    
-                    one-vs-the-rest classifier
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="6.2" 
data-path="../multiclass/iris.html">
-            
-                <a href="../multiclass/iris.html">
-            
-                    
-                        <b>6.2.</b>
-                    
-                    Iris Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="6.2.1" 
data-path="../multiclass/iris_dataset.html">
-            
-                <a href="../multiclass/iris_dataset.html">
-            
-                    
-                        <b>6.2.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.2.2" 
data-path="../multiclass/iris_scw.html">
-            
-                <a href="../multiclass/iris_scw.html">
-            
-                    
-                        <b>6.2.2.</b>
-                    
-                    SCW
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="6.2.3" 
data-path="../multiclass/iris_randomforest.html">
-            
-                <a href="../multiclass/iris_randomforest.html">
-            
-                    
-                        <b>6.2.3.</b>
-                    
-                    RandomForest
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part VII - Regression</li>
-        
-        
-    
-        <li class="chapter " data-level="7.1" 
data-path="../regression/e2006.html">
-            
-                <a href="../regression/e2006.html">
-            
-                    
-                        <b>7.1.</b>
-                    
-                    E2006-tfidf regression Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="7.1.1" 
data-path="../regression/e2006_dataset.html">
-            
-                <a href="../regression/e2006_dataset.html">
-            
-                    
-                        <b>7.1.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="7.1.2" 
data-path="../regression/e2006_arow.html">
-            
-                <a href="../regression/e2006_arow.html">
-            
-                    
-                        <b>7.1.2.</b>
-                    
-                    Passive Aggressive, AROW
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="7.2" 
data-path="../regression/kddcup12tr2.html">
-            
-                <a href="../regression/kddcup12tr2.html">
-            
-                    
-                        <b>7.2.</b>
-                    
-                    KDDCup 2012 track 2 CTR prediction Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="7.2.1" 
data-path="../regression/kddcup12tr2_dataset.html">
-            
-                <a href="../regression/kddcup12tr2_dataset.html">
-            
-                    
-                        <b>7.2.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="7.2.2" 
data-path="../regression/kddcup12tr2_lr.html">
-            
-                <a href="../regression/kddcup12tr2_lr.html">
-            
-                    
-                        <b>7.2.2.</b>
-                    
-                    Logistic Regression, Passive Aggressive
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="7.2.3" 
data-path="../regression/kddcup12tr2_lr_amplify.html">
-            
-                <a href="../regression/kddcup12tr2_lr_amplify.html">
-            
-                    
-                        <b>7.2.3.</b>
-                    
-                    Logistic Regression with Amplifier
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="7.2.4" 
data-path="../regression/kddcup12tr2_adagrad.html">
-            
-                <a href="../regression/kddcup12tr2_adagrad.html">
-            
-                    
-                        <b>7.2.4.</b>
-                    
-                    AdaGrad, AdaDelta
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part VIII - Recommendation</li>
-        
-        
-    
-        <li class="chapter " data-level="8.1" data-path="../recommend/cf.html">
-            
-                <a href="../recommend/cf.html">
-            
-                    
-                        <b>8.1.</b>
-                    
-                    Collaborative Filtering
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="8.1.1" 
data-path="../recommend/item_based_cf.html">
-            
-                <a href="../recommend/item_based_cf.html">
-            
-                    
-                        <b>8.1.1.</b>
-                    
-                    Item-based Collaborative Filtering
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="8.2" 
data-path="../recommend/news20.html">
-            
-                <a href="../recommend/news20.html">
-            
-                    
-                        <b>8.2.</b>
-                    
-                    News20 related article recommendation Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="8.2.1" 
data-path="../multiclass/news20_dataset.html">
-            
-                <a href="../multiclass/news20_dataset.html">
-            
-                    
-                        <b>8.2.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.2.2" 
data-path="../recommend/news20_jaccard.html">
-            
-                <a href="../recommend/news20_jaccard.html">
-            
-                    
-                        <b>8.2.2.</b>
-                    
-                    LSH/Minhash and Jaccard Similarity
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.2.3" 
data-path="../recommend/news20_knn.html">
-            
-                <a href="../recommend/news20_knn.html">
-            
-                    
-                        <b>8.2.3.</b>
-                    
-                    LSH/Minhash and Brute-Force Search
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.2.4" 
data-path="../recommend/news20_bbit_minhash.html">
-            
-                <a href="../recommend/news20_bbit_minhash.html">
-            
-                    
-                        <b>8.2.4.</b>
-                    
-                    kNN search using b-Bits Minhash
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="8.3" 
data-path="../recommend/movielens.html">
-            
-                <a href="../recommend/movielens.html">
-            
-                    
-                        <b>8.3.</b>
-                    
-                    MovieLens movie recommendation Tutorial
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="8.3.1" 
data-path="../recommend/movielens_dataset.html">
-            
-                <a href="../recommend/movielens_dataset.html">
-            
-                    
-                        <b>8.3.1.</b>
-                    
-                    Data preparation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.3.2" 
data-path="../recommend/movielens_mf.html">
-            
-                <a href="../recommend/movielens_mf.html">
-            
-                    
-                        <b>8.3.2.</b>
-                    
-                    Matrix Factorization
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.3.3" 
data-path="../recommend/movielens_fm.html">
-            
-                <a href="../recommend/movielens_fm.html">
-            
-                    
-                        <b>8.3.3.</b>
-                    
-                    Factorization Machine
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="8.3.4" 
data-path="../recommend/movielens_cv.html">
-            
-                <a href="../recommend/movielens_cv.html">
-            
-                    
-                        <b>8.3.4.</b>
-                    
-                    10-fold Cross Validation (Matrix Factorization)
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part IX - Anomaly Detection</li>
-        
-        
-    
-        <li class="chapter " data-level="9.1" data-path="../anomaly/lof.html">
-            
-                <a href="../anomaly/lof.html">
-            
-                    
-                        <b>9.1.</b>
-                    
-                    Outlier Detection using Local Outlier Factor (LOF)
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="9.2" data-path="../anomaly/sst.html">
-            
-                <a href="../anomaly/sst.html">
-            
-                    
-                        <b>9.2.</b>
-                    
-                    Change-Point Detection using Singular Spectrum 
Transformation (SST)
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="9.3" 
data-path="../anomaly/changefinder.html">
-            
-                <a href="../anomaly/changefinder.html">
-            
-                    
-                        <b>9.3.</b>
-                    
-                    ChangeFinder: Detecting Outlier and Change-Point 
Simultaneously
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part X - Clustering</li>
-        
-        
-    
-        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
-            
-                <a href="../clustering/lda.html">
-            
-                    
-                        <b>10.1.</b>
-                    
-                    Latent Dirichlet Allocation
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="10.2" 
data-path="../clustering/plsa.html">
-            
-                <a href="../clustering/plsa.html">
-            
-                    
-                        <b>10.2.</b>
-                    
-                    Probabilistic Latent Semantic Analysis
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part XI - GeoSpatial functions</li>
-        
-        
-    
-        <li class="chapter " data-level="11.1" 
data-path="../geospatial/latlon.html">
-            
-                <a href="../geospatial/latlon.html">
-            
-                    
-                        <b>11.1.</b>
-                    
-                    Lat/Lon functions
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part XII - Hivemall on Spark</li>
-        
-        
-    
-        <li class="chapter " data-level="12.1" 
data-path="../spark/getting_started/">
-            
-                <a href="../spark/getting_started/">
-            
-                    
-                        <b>12.1.</b>
-                    
-                    Getting Started
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="12.1.1" 
data-path="../spark/getting_started/installation.html">
-            
-                <a href="../spark/getting_started/installation.html">
-            
-                    
-                        <b>12.1.1.</b>
-                    
-                    Installation
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
-            
-                <a href="../spark/binaryclass/">
-            
-                    
-                        <b>12.2.</b>
-                    
-                    Binary Classification
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="12.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
-            
-                <a href="../spark/binaryclass/a9a_df.html">
-            
-                    
-                        <b>12.2.1.</b>
-                    
-                    a9a Tutorial for DataFrame
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
-            
-                <a href="../spark/binaryclass/">
-            
-                    
-                        <b>12.3.</b>
-                    
-                    Regression
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="12.3.1" 
data-path="../spark/regression/e2006_df.html">
-            
-                <a href="../spark/regression/e2006_df.html">
-            
-                    
-                        <b>12.3.1.</b>
-                    
-                    E2006-tfidf regression Tutorial for DataFrame
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
-            
-                <a href="../spark/misc/misc.html">
-            
-                    
-                        <b>12.4.</b>
-                    
-                    Generic features
-            
-                </a>
-            
-
-            
-            <ul class="articles">
-                
-    
-        <li class="chapter " data-level="12.4.1" 
data-path="../spark/misc/topk_join.html">
-            
-                <a href="../spark/misc/topk_join.html">
-            
-                    
-                        <b>12.4.1.</b>
-                    
-                    Top-k Join processing
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="12.4.2" 
data-path="../spark/misc/functions.html">
-            
-                <a href="../spark/misc/functions.html">
-            
-                    
-                        <b>12.4.2.</b>
-                    
-                    Other utility functions
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-            </ul>
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part XIII - Hivemall on Docker</li>
-        
-        
-    
-        <li class="chapter " data-level="13.1" 
data-path="../docker/getting_started.html">
-            
-                <a href="../docker/getting_started.html">
-            
-                    
-                        <b>13.1.</b>
-                    
-                    Getting Started
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-        
-        <li class="header">Part XIV - External References</li>
-        
-        
-    
-        <li class="chapter " data-level="14.1" >
-            
-                <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
-            
-                    
-                        <b>14.1.</b>
-                    
-                    Hivemall on Apache Spark
-            
-                </a>
-            
-
-            
-        </li>
-    
-        <li class="chapter " data-level="14.2" >
-            
-                <a target="_blank" 
href="https://github.com/daijyc/hivemall/wiki/PigHome";>
-            
-                    
-                        <b>14.2.</b>
-                    
-                    Hivemall on Apache Pig
-            
-                </a>
-            
-
-            
-        </li>
-    
-
-    
-
-    <li class="divider"></li>
-
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-        <a href="https://www.gitbook.com"; target="blank" class="gitbook-link">
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-    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.
--->
-<h2 id="feature-vectorizer">Feature Vectorizer</h2>
-<p><code>array&lt;string&gt; vectorize_feature(array&lt;string&gt; 
featureNames, ...)</code> is useful to generate a feature vector for each row, 
from a table.</p>
-<pre><code class="lang-sql">select 
vectorize_features(array(&quot;a&quot;,&quot;b&quot;),&quot;0.2&quot;,&quot;0.3&quot;)
 from dual;
-&gt;[&quot;a:0.2&quot;,&quot;b:0.3&quot;]
-
--- avoid zero weight
-select 
vectorize_features(array(&quot;a&quot;,&quot;b&quot;),&quot;0.2&quot;,0) from 
dual;
-&gt; [&quot;a:0.2&quot;]
-
--- true boolean value is treated as 1.0 (a categorical value w/ its column 
name)
-select 
vectorize_features(array(&quot;a&quot;,&quot;b&quot;,&quot;bool&quot;),0.2,0.3,true)
 from dual;
-&gt; [&quot;a:0.2&quot;,&quot;b:0.3&quot;,&quot;bool:1.0&quot;]
-
--- an example to generate feature vectors from table
-select * from dual;
-&gt; 1                                         
-select vectorize_features(array(&quot;a&quot;),*) from dual;
-&gt; [&quot;a:1.0&quot;]
-
--- has categorical feature
-select 
vectorize_features(array(&quot;a&quot;,&quot;b&quot;,&quot;wheather&quot;),&quot;0.2&quot;,&quot;0.3&quot;,&quot;sunny&quot;)
 from dual;
-&gt; [&quot;a:0.2&quot;,&quot;b:0.3&quot;,&quot;whether#sunny&quot;]
-</code></pre>
-<pre><code class="lang-sql">select
-  id,
-  vectorize_features(
-    
array(&quot;age&quot;,&quot;job&quot;,&quot;marital&quot;,&quot;education&quot;,&quot;default&quot;,&quot;balance&quot;,&quot;housing&quot;,&quot;loan&quot;,&quot;contact&quot;,&quot;day&quot;,&quot;month&quot;,&quot;duration&quot;,&quot;campaign&quot;,&quot;pdays&quot;,&quot;previous&quot;,&quot;poutcome&quot;),
 
-    
age,job,marital,education,default,balance,housing,loan,contact,day,month,duration,campaign,pdays,previous,poutcome
-  ) as features,
-  y
-from
-  train
-limit 2;
-
-&gt; 1       
[&quot;age:39.0&quot;,&quot;job#blue-collar&quot;,&quot;marital#married&quot;,&quot;education#secondary&quot;,&quot;default#no&quot;,&quot;balance:1756.0&quot;,&quot;housing#yes&quot;,&quot;loan#no&quot;,&quot;contact#cellular&quot;,&quot;day:3.0&quot;,&quot;month#apr&quot;,&quot;duration:939.0&quot;,&quot;campaign:1.0&quot;,&quot;pdays:-1.0&quot;,&quot;poutcome#unknown&quot;]
   1
-&gt; 2       
[&quot;age:51.0&quot;,&quot;job#entrepreneur&quot;,&quot;marital#married&quot;,&quot;education#primary&quot;,&quot;default#no&quot;,&quot;balance:1443.0&quot;,&quot;housing#no&quot;,&quot;loan#no&quot;,&quot;contact#cellular&quot;,&quot;day:18.0&quot;,&quot;month#feb&quot;,&quot;duration:172.0&quot;,&quot;campaign:10.0&quot;,&quot;pdays:-1.0&quot;,&quot;poutcome#unknown&quot;]
   1
-</code></pre>
-<p><div id="page-footer"><hr><!--
-  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.
--->
-<p><sub><font color="gray">
-Apache Hivemall is an effort undergoing incubation at The Apache Software 
Foundation (ASF), sponsored by the Apache Incubator.
-</font></sub></p>
-</div></p>
-
-                                
-                                </section>
-                            
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-    <div class="search-results">
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-            
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class='search-query'></span>"</h1>
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-
-            
-
-        
-    </div>
-
-    <script>
-        var gitbook = gitbook || [];
-        gitbook.push(function() {
-            gitbook.page.hasChanged({"page":{"title":"Vectorize 
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/15b9991a/userguide/geospatial/latlon.html
----------------------------------------------------------------------
diff --git a/userguide/geospatial/latlon.html b/userguide/geospatial/latlon.html
index c991bda..37e2eca 100644
--- a/userguide/geospatial/latlon.html
+++ b/userguide/geospatial/latlon.html
@@ -568,14 +568,14 @@
             
         </li>
     
-        <li class="chapter " data-level="3.3" 
data-path="../ft_engineering/tfidf.html">
+        <li class="chapter " data-level="3.3" 
data-path="../ft_engineering/selection.html">
             
-                <a href="../ft_engineering/tfidf.html">
+                <a href="../ft_engineering/selection.html">
             
                     
                         <b>3.3.</b>
                     
-                    TF-IDF calculation
+                    Feature Selection
             
                 </a>
             
@@ -583,30 +583,29 @@
             
         </li>
     
-        <li class="chapter " data-level="3.4" 
data-path="../ft_engineering/ft_trans.html">
+        <li class="chapter " data-level="3.4" 
data-path="../ft_engineering/binning.html">
             
-                <a href="../ft_engineering/ft_trans.html">
+                <a href="../ft_engineering/binning.html">
             
                     
                         <b>3.4.</b>
                     
-                    FEATURE TRANSFORMATION
+                    Feature Binning
             
                 </a>
             
 
             
-            <ul class="articles">
-                
+        </li>
     
-        <li class="chapter " data-level="3.4.1" 
data-path="../ft_engineering/vectorizer.html">
+        <li class="chapter " data-level="3.5" 
data-path="../ft_engineering/tfidf.html">
             
-                <a href="../ft_engineering/vectorizer.html">
+                <a href="../ft_engineering/tfidf.html">
             
                     
-                        <b>3.4.1.</b>
+                        <b>3.5.</b>
                     
-                    Vectorize Features
+                    TF-IDF Calculation
             
                 </a>
             
@@ -614,34 +613,45 @@
             
         </li>
     
-        <li class="chapter " data-level="3.4.2" 
data-path="../ft_engineering/quantify.html">
+        <li class="chapter " data-level="3.6" 
data-path="../ft_engineering/ft_trans.html">
             
-                <a href="../ft_engineering/quantify.html">
+                <a href="../ft_engineering/ft_trans.html">
             
                     
-                        <b>3.4.2.</b>
+                        <b>3.6.</b>
                     
-                    Quantify non-number features
+                    FEATURE TRANSFORMATION
             
                 </a>
             
 
             
-        </li>
+            <ul class="articles">
+                
     
+        <li class="chapter " data-level="3.6.1" 
data-path="../ft_engineering/vectorization.html">
+            
+                <a href="../ft_engineering/vectorization.html">
+            
+                    
+                        <b>3.6.1.</b>
+                    
+                    Feature Vectorization
+            
+                </a>
+            
 
-            </ul>
             
         </li>
     
-        <li class="chapter " data-level="3.5" 
data-path="../ft_engineering/feature_selection.html">
+        <li class="chapter " data-level="3.6.2" 
data-path="../ft_engineering/quantify.html">
             
-                <a href="../ft_engineering/feature_selection.html">
+                <a href="../ft_engineering/quantify.html">
             
                     
-                        <b>3.5.</b>
+                        <b>3.6.2.</b>
                     
-                    Feature selection
+                    Quantify non-number features
             
                 </a>
             
@@ -650,6 +660,11 @@
         </li>
     
 
+            </ul>
+            
+        </li>
+    
+
     
         
         <li class="header">Part IV - Evaluation</li>
@@ -2163,7 +2178,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
     <script>
         var gitbook = gitbook || [];
         gitbook.push(function() {
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 </div>

http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/15b9991a/userguide/getting_started/index.html
----------------------------------------------------------------------
diff --git a/userguide/getting_started/index.html 
b/userguide/getting_started/index.html
index 0c855e7..1a49427 100644
--- a/userguide/getting_started/index.html
+++ b/userguide/getting_started/index.html
@@ -568,14 +568,14 @@
             
         </li>
     
-        <li class="chapter " data-level="3.3" 
data-path="../ft_engineering/tfidf.html">
+        <li class="chapter " data-level="3.3" 
data-path="../ft_engineering/selection.html">
             
-                <a href="../ft_engineering/tfidf.html">
+                <a href="../ft_engineering/selection.html">
             
                     
                         <b>3.3.</b>
                     
-                    TF-IDF calculation
+                    Feature Selection
             
                 </a>
             
@@ -583,30 +583,29 @@
             
         </li>
     
-        <li class="chapter " data-level="3.4" 
data-path="../ft_engineering/ft_trans.html">
+        <li class="chapter " data-level="3.4" 
data-path="../ft_engineering/binning.html">
             
-                <a href="../ft_engineering/ft_trans.html">
+                <a href="../ft_engineering/binning.html">
             
                     
                         <b>3.4.</b>
                     
-                    FEATURE TRANSFORMATION
+                    Feature Binning
             
                 </a>
             
 
             
-            <ul class="articles">
-                
+        </li>
     
-        <li class="chapter " data-level="3.4.1" 
data-path="../ft_engineering/vectorizer.html">
+        <li class="chapter " data-level="3.5" 
data-path="../ft_engineering/tfidf.html">
             
-                <a href="../ft_engineering/vectorizer.html">
+                <a href="../ft_engineering/tfidf.html">
             
                     
-                        <b>3.4.1.</b>
+                        <b>3.5.</b>
                     
-                    Vectorize Features
+                    TF-IDF Calculation
             
                 </a>
             
@@ -614,34 +613,45 @@
             
         </li>
     
-        <li class="chapter " data-level="3.4.2" 
data-path="../ft_engineering/quantify.html">
+        <li class="chapter " data-level="3.6" 
data-path="../ft_engineering/ft_trans.html">
             
-                <a href="../ft_engineering/quantify.html">
+                <a href="../ft_engineering/ft_trans.html">
             
                     
-                        <b>3.4.2.</b>
+                        <b>3.6.</b>
                     
-                    Quantify non-number features
+                    FEATURE TRANSFORMATION
             
                 </a>
             
 
             
-        </li>
+            <ul class="articles">
+                
     
+        <li class="chapter " data-level="3.6.1" 
data-path="../ft_engineering/vectorization.html">
+            
+                <a href="../ft_engineering/vectorization.html">
+            
+                    
+                        <b>3.6.1.</b>
+                    
+                    Feature Vectorization
+            
+                </a>
+            
 
-            </ul>
             
         </li>
     
-        <li class="chapter " data-level="3.5" 
data-path="../ft_engineering/feature_selection.html">
+        <li class="chapter " data-level="3.6.2" 
data-path="../ft_engineering/quantify.html">
             
-                <a href="../ft_engineering/feature_selection.html">
+                <a href="../ft_engineering/quantify.html">
             
                     
-                        <b>3.5.</b>
+                        <b>3.6.2.</b>
                     
-                    Feature selection
+                    Quantify non-number features
             
                 </a>
             
@@ -650,6 +660,11 @@
         </li>
     
 
+            </ul>
+            
+        </li>
+    
+
     
         
         <li class="header">Part IV - Evaluation</li>
@@ -2048,7 +2063,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
     <script>
         var gitbook = gitbook || [];
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