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+
+            
+        </li>
+    
 
             </ul>
             
@@ -1947,6 +1962,21 @@
             
         </li>
     
+        <li class="chapter " data-level="13.3.2" 
data-path="../regression/e2006_sql.html">
+            
+                <a href="../regression/e2006_sql.html">
+            
+                    
+                        <b>13.3.2.</b>
+                    
+                    E2006-tfidf regression Tutorial for SQL
+            
+                </a>
+            
+
+            
+        </li>
+    
 
             </ul>
             
@@ -2180,7 +2210,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
     <script>
         var gitbook = gitbook || [];
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 </div>

http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/c013f617/userguide/spark/misc/topk_join.html
----------------------------------------------------------------------
diff --git a/userguide/spark/misc/topk_join.html 
b/userguide/spark/misc/topk_join.html
index 5485d77..78b83d0 100644
--- a/userguide/spark/misc/topk_join.html
+++ b/userguide/spark/misc/topk_join.html
@@ -523,7 +523,7 @@
                     
                         <b>2.3.</b>
                     
-                    English/Japanese Text Tokenizer
+                    Text Tokenizer
             
                 </a>
             
@@ -1911,6 +1911,21 @@
             
         </li>
     
+        <li class="chapter " data-level="13.2.2" 
data-path="../binaryclass/a9a_sql.html">
+            
+                <a href="../binaryclass/a9a_sql.html">
+            
+                    
+                        <b>13.2.2.</b>
+                    
+                    a9a Tutorial for SQL
+            
+                </a>
+            
+
+            
+        </li>
+    
 
             </ul>
             
@@ -1947,6 +1962,21 @@
             
         </li>
     
+        <li class="chapter " data-level="13.3.2" 
data-path="../regression/e2006_sql.html">
+            
+                <a href="../regression/e2006_sql.html">
+            
+                    
+                        <b>13.3.2.</b>
+                    
+                    E2006-tfidf regression Tutorial for SQL
+            
+                </a>
+            
+
+            
+        </li>
+    
 
             </ul>
             
@@ -2359,7 +2389,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
     <script>
         var gitbook = gitbook || [];
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http://git-wip-us.apache.org/repos/asf/incubator-hivemall-site/blob/c013f617/userguide/spark/regression/e2006_df.html
----------------------------------------------------------------------
diff --git a/userguide/spark/regression/e2006_df.html 
b/userguide/spark/regression/e2006_df.html
index 97badf3..b75359b 100644
--- a/userguide/spark/regression/e2006_df.html
+++ b/userguide/spark/regression/e2006_df.html
@@ -97,7 +97,7 @@
     <link rel="shortcut icon" href="../../gitbook/images/favicon.ico" 
type="image/x-icon">
 
     
-    <link rel="next" href="../misc/misc.html" />
+    <link rel="next" href="e2006_sql.html" />
     
     
     <link rel="prev" href="../binaryclass/" />
@@ -523,7 +523,7 @@
                     
                         <b>2.3.</b>
                     
-                    English/Japanese Text Tokenizer
+                    Text Tokenizer
             
                 </a>
             
@@ -1911,6 +1911,21 @@
             
         </li>
     
+        <li class="chapter " data-level="13.2.2" 
data-path="../binaryclass/a9a_sql.html">
+            
+                <a href="../binaryclass/a9a_sql.html">
+            
+                    
+                        <b>13.2.2.</b>
+                    
+                    a9a Tutorial for SQL
+            
+                </a>
+            
+
+            
+        </li>
+    
 
             </ul>
             
@@ -1947,6 +1962,21 @@
             
         </li>
     
+        <li class="chapter " data-level="13.3.2" data-path="e2006_sql.html">
+            
+                <a href="e2006_sql.html">
+            
+                    
+                        <b>13.3.2.</b>
+                    
+                    E2006-tfidf regression Tutorial for SQL
+            
+                </a>
+            
+
+            
+        </li>
+    
 
             </ul>
             
@@ -2132,10 +2162,15 @@
 $ wget 
http://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/regression/E2006.test.bz2
 </code></pre>
 <pre><code class="lang-scala">scala&gt; :paste
-<span class="hljs-keyword">val</span> trainDf = spark.read.format(<span 
class="hljs-string">&quot;libsvm&quot;</span>).load(<span 
class="hljs-string">&quot;E2006.train.bz2&quot;</span>)
-  .select(
+<span class="hljs-keyword">val</span> rawTrainDf = spark.read.format(<span 
class="hljs-string">&quot;libsvm&quot;</span>).load(<span 
class="hljs-string">&quot;E2006.train.bz2&quot;</span>)
+
+<span class="hljs-keyword">val</span> (max, min) = 
rawTrainDf.select(max($<span class="hljs-string">&quot;label&quot;</span>), 
min($<span class="hljs-string">&quot;label&quot;</span>)).collect.map {
+  <span class="hljs-keyword">case</span> <span 
class="hljs-type">Row</span>(max: <span class="hljs-type">Double</span>, min: 
<span class="hljs-type">Double</span>) =&gt; (max, min)
+}
+
+<span class="hljs-keyword">val</span> trainDf = rawTrainDf.select(
     <span class="hljs-comment">// `label` must be [0.0, 1.0]</span>
-    rescale($<span class="hljs-string">&quot;label&quot;</span>, lit(<span 
class="hljs-number">-7.899578</span>f), lit(<span 
class="hljs-number">-0.51940954</span>f)).as(<span 
class="hljs-string">&quot;label&quot;</span>),
+    rescale($<span class="hljs-string">&quot;label&quot;</span>, lit(min), 
lit(max).as(<span class="hljs-string">&quot;label&quot;</span>),
     $<span class="hljs-string">&quot;features&quot;</span>
   )
 
@@ -2146,7 +2181,7 @@ root
 
 scala&gt; :paste
 <span class="hljs-keyword">val</span> testDf = spark.read.format(<span 
class="hljs-string">&quot;libsvm&quot;</span>).load(<span 
class="hljs-string">&quot;E2006.test.bz2&quot;</span>)
-  .select(rowid(), rescale($<span 
class="hljs-string">&quot;label&quot;</span>, lit(<span 
class="hljs-number">-7.899578</span>f), lit(<span 
class="hljs-number">-0.51940954</span>f)).as(<span 
class="hljs-string">&quot;label&quot;</span>), $<span 
class="hljs-string">&quot;features&quot;</span>)
+  .select(rowid(), rescale($<span 
class="hljs-string">&quot;label&quot;</span>, lit(min), lit(max)).as(<span 
class="hljs-string">&quot;label&quot;</span>), $<span 
class="hljs-string">&quot;features&quot;</span>)
   .explode_vector($<span class="hljs-string">&quot;features&quot;</span>)
   .select($<span class="hljs-string">&quot;rowid&quot;</span>, $<span 
class="hljs-string">&quot;label&quot;</span>.as(<span 
class="hljs-string">&quot;target&quot;</span>), $<span 
class="hljs-string">&quot;feature&quot;</span>, $<span 
class="hljs-string">&quot;weight&quot;</span>.as(<span 
class="hljs-string">&quot;value&quot;</span>))
   .cache
@@ -2244,7 +2279,7 @@ Apache Hivemall is an effort undergoing incubation at The 
Apache Software Founda
     <script>
         var gitbook = gitbook || [];
         gitbook.push(function() {
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