http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/eval/datagen.html
----------------------------------------------------------------------
diff --git a/userguide/eval/datagen.html b/userguide/eval/datagen.html
index 7b1a55b..7b9af9a 100644
--- a/userguide/eval/datagen.html
+++ b/userguide/eval/datagen.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
+        <li class="chapter " data-level="12.1.1" 
data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
+                        <b>12.1.1.</b>
                     
                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
+        <li class="chapter " data-level="12.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
             
                 <a href="../spark/binaryclass/a9a_df.html">
             
                     
-                        <b>10.2.1.</b>
+                        <b>12.2.1.</b>
                     
                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.3" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
@@ -1740,12 +1784,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
+        <li class="chapter " data-level="12.3.1" 
data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
+        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
-                        <b>10.4.</b>
+                        <b>12.4.</b>
                     
                     Generic features
             
@@ -1776,12 +1820,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.4.1" 
data-path="../spark/misc/topk_join.html">
+        <li class="chapter " data-level="12.4.1" 
data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
+        <li class="chapter " data-level="13.2" >
             
                 <a target="_blank" 
href="https://github.com/daijyc/hivemall/wiki/PigHome";>
             
                     
-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -1951,7 +2010,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/eval/lr_datagen.html
----------------------------------------------------------------------
diff --git a/userguide/eval/lr_datagen.html b/userguide/eval/lr_datagen.html
index ce35aff..ad76ac7 100644
--- a/userguide/eval/lr_datagen.html
+++ b/userguide/eval/lr_datagen.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
+        <li class="chapter " data-level="12.1.1" 
data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
+                        <b>12.1.1.</b>
                     
                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
+        <li class="chapter " data-level="12.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
             
                 <a href="../spark/binaryclass/a9a_df.html">
             
                     
-                        <b>10.2.1.</b>
+                        <b>12.2.1.</b>
                     
                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.3" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
@@ -1740,12 +1784,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
+        <li class="chapter " data-level="12.3.1" 
data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
+        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
-                        <b>10.4.</b>
+                        <b>12.4.</b>
                     
                     Generic features
             
@@ -1776,12 +1820,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.4.1" 
data-path="../spark/misc/topk_join.html">
+        <li class="chapter " data-level="12.4.1" 
data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
+        <li class="chapter " data-level="13.2" >
             
                 <a target="_blank" 
href="https://github.com/daijyc/hivemall/wiki/PigHome";>
             
                     
-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -2039,7 +2098,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/eval/rank.html
----------------------------------------------------------------------
diff --git a/userguide/eval/rank.html b/userguide/eval/rank.html
index 2b6812d..38e6741 100644
--- a/userguide/eval/rank.html
+++ b/userguide/eval/rank.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
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-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
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data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
+                        <b>12.1.1.</b>
                     
                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
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data-path="../spark/binaryclass/a9a_df.html">
             
                 <a href="../spark/binaryclass/a9a_df.html">
             
                     
-                        <b>10.2.1.</b>
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                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.3" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
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-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
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data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
+        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
-                        <b>10.4.</b>
+                        <b>12.4.</b>
                     
                     Generic features
             
@@ -1776,12 +1820,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.4.1" 
data-path="../spark/misc/topk_join.html">
+        <li class="chapter " data-level="12.4.1" 
data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
+        <li class="chapter " data-level="13.2" >
             
                 <a target="_blank" 
href="https://github.com/daijyc/hivemall/wiki/PigHome";>
             
                     
-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -2379,7 +2438,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/eval/stat_eval.html
----------------------------------------------------------------------
diff --git a/userguide/eval/stat_eval.html b/userguide/eval/stat_eval.html
index f2e52a0..b713bca 100644
--- a/userguide/eval/stat_eval.html
+++ b/userguide/eval/stat_eval.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
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-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
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data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
+                        <b>12.1.1.</b>
                     
                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
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-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
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-                        <b>10.2.1.</b>
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                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.3" 
data-path="../spark/binaryclass/">
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data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
@@ -1740,12 +1784,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
+        <li class="chapter " data-level="12.3.1" 
data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
+        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
-                        <b>10.4.</b>
+                        <b>12.4.</b>
                     
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@@ -1776,12 +1820,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.4.1" 
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data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
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-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -2013,7 +2072,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/ft_engineering/feature_selection.html
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diff --git a/userguide/ft_engineering/feature_selection.html 
b/userguide/ft_engineering/feature_selection.html
index f5e50f0..90b73d5 100644
--- a/userguide/ft_engineering/feature_selection.html
+++ b/userguide/ft_engineering/feature_selection.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
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-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
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data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
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                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
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data-path="../spark/binaryclass/a9a_df.html">
             
                 <a href="../spark/binaryclass/a9a_df.html">
             
                     
-                        <b>10.2.1.</b>
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                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
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data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
@@ -1740,12 +1784,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
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data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
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data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
-                        <b>10.4.</b>
+                        <b>12.4.</b>
                     
                     Generic features
             
@@ -1776,12 +1820,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.4.1" 
data-path="../spark/misc/topk_join.html">
+        <li class="chapter " data-level="12.4.1" 
data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
+        <li class="chapter " data-level="13.2" >
             
                 <a target="_blank" 
href="https://github.com/daijyc/hivemall/wiki/PigHome";>
             
                     
-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -2158,7 +2217,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/06c5398a/userguide/ft_engineering/ft_trans.html
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diff --git a/userguide/ft_engineering/ft_trans.html 
b/userguide/ft_engineering/ft_trans.html
index 6fd583c..16b2763 100644
--- a/userguide/ft_engineering/ft_trans.html
+++ b/userguide/ft_engineering/ft_trans.html
@@ -1648,17 +1648,61 @@
 
     
         
-        <li class="header">Part X - Hivemall on Spark</li>
+        <li class="header">Part X - Clustering</li>
         
         
     
-        <li class="chapter " data-level="10.1" 
data-path="../spark/getting_started/">
+        <li class="chapter " data-level="10.1" 
data-path="../clustering/lda.html">
             
-                <a href="../spark/getting_started/">
+                <a href="../clustering/lda.html">
             
                     
                         <b>10.1.</b>
                     
+                    Latent Dirichlet Allocation
+            
+                </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>
@@ -1668,12 +1712,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.1.1" 
data-path="../spark/getting_started/installation.html">
+        <li class="chapter " data-level="12.1.1" 
data-path="../spark/getting_started/installation.html">
             
                 <a href="../spark/getting_started/installation.html">
             
                     
-                        <b>10.1.1.</b>
+                        <b>12.1.1.</b>
                     
                     Installation
             
@@ -1688,12 +1732,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.2" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.2" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.2.</b>
+                        <b>12.2.</b>
                     
                     Binary Classification
             
@@ -1704,12 +1748,12 @@
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-        <li class="chapter " data-level="10.2.1" 
data-path="../spark/binaryclass/a9a_df.html">
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data-path="../spark/binaryclass/a9a_df.html">
             
                 <a href="../spark/binaryclass/a9a_df.html">
             
                     
-                        <b>10.2.1.</b>
+                        <b>12.2.1.</b>
                     
                     a9a Tutorial for DataFrame
             
@@ -1724,12 +1768,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.3" 
data-path="../spark/binaryclass/">
+        <li class="chapter " data-level="12.3" 
data-path="../spark/binaryclass/">
             
                 <a href="../spark/binaryclass/">
             
                     
-                        <b>10.3.</b>
+                        <b>12.3.</b>
                     
                     Regression
             
@@ -1740,12 +1784,12 @@
             <ul class="articles">
                 
     
-        <li class="chapter " data-level="10.3.1" 
data-path="../spark/regression/e2006_df.html">
+        <li class="chapter " data-level="12.3.1" 
data-path="../spark/regression/e2006_df.html">
             
                 <a href="../spark/regression/e2006_df.html">
             
                     
-                        <b>10.3.1.</b>
+                        <b>12.3.1.</b>
                     
                     E2006-tfidf regression Tutorial for DataFrame
             
@@ -1760,12 +1804,12 @@
             
         </li>
     
-        <li class="chapter " data-level="10.4" 
data-path="../spark/misc/misc.html">
+        <li class="chapter " data-level="12.4" 
data-path="../spark/misc/misc.html">
             
                 <a href="../spark/misc/misc.html">
             
                     
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+                        <b>12.4.</b>
                     
                     Generic features
             
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-        <li class="chapter " data-level="10.4.1" 
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data-path="../spark/misc/topk_join.html">
             
                 <a href="../spark/misc/topk_join.html">
             
                     
-                        <b>10.4.1.</b>
+                        <b>12.4.1.</b>
                     
                     Top-k Join processing
             
@@ -1791,6 +1835,21 @@
             
         </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>
             
@@ -1799,16 +1858,16 @@
 
     
         
-        <li class="header">Part X - External References</li>
+        <li class="header">Part XIII - External References</li>
         
         
     
-        <li class="chapter " data-level="11.1" >
+        <li class="chapter " data-level="13.1" >
             
                 <a target="_blank" 
href="https://github.com/maropu/hivemall-spark";>
             
                     
-                        <b>11.1.</b>
+                        <b>13.1.</b>
                     
                     Hivemall on Apache Spark
             
@@ -1818,12 +1877,12 @@
             
         </li>
     
-        <li class="chapter " data-level="11.2" >
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-                        <b>11.2.</b>
+                        <b>13.2.</b>
                     
                     Hivemall on Apache Pig
             
@@ -1951,7 +2010,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
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