diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index e4dd251c..0a3a3ebc 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -388,8 +388,8 @@
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-              <caret line="11" column="30" lean-forward="false" selection-start-line="11" selection-start-column="30" selection-end-line="11" selection-end-column="30" />
+            <state relative-caret-position="255">
+              <caret line="24" column="45" lean-forward="true" selection-start-line="24" selection-start-column="45" selection-end-line="24" selection-end-column="45" />
               <folding />
             </state>
           </provider>
@@ -413,6 +413,15 @@
       <find>file/</find>
       <find>SparkLearning1.</find>
       <find>SparkLearning1</find>
+      <find>1</find>
+      <find>1.5</find>
+      <find>S1.5</find>
+      <find>Sp1.5</find>
+      <find>Spa1.5</find>
+      <find>Spark1.5</find>
+      <find>SparkL1.5</find>
+      <find>SparkLear1.5</find>
+      <find>SparkLearni1.5</find>
       <find>SparkLearning1.5</find>
     </findStrings>
     <replaceStrings>
@@ -529,7 +538,7 @@
     </treeState>
   </component>
   <component name="ProjectFrameBounds">
-    <option name="x" value="8" />
+    <option name="x" value="-8" />
     <option name="y" value="8" />
     <option name="width" value="1920" />
     <option name="height" value="1040" />
@@ -552,8 +561,21 @@
       <foldersAlwaysOnTop value="true" />
     </navigator>
     <panes>
-      <pane id="Scratches" />
       <pane id="PackagesPane" />
+      <pane id="Scope">
+        <subPane subId="Project Files">
+          <PATH>
+            <PATH_ELEMENT USER_OBJECT="Root">
+              <option name="myItemId" value="" />
+              <option name="myItemType" value="" />
+            </PATH_ELEMENT>
+            <PATH_ELEMENT USER_OBJECT="SparkLearning1.5">
+              <option name="myItemId" value="" />
+              <option name="myItemType" value="" />
+            </PATH_ELEMENT>
+          </PATH>
+        </subPane>
+      </pane>
       <pane id="ProjectPane">
         <subPane>
           <PATH>
@@ -562,26 +584,23 @@
               <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
             </PATH_ELEMENT>
             <PATH_ELEMENT>
-              <option name="myItemId" value="SparkLearning1" />
+              <option name="myItemId" value="SparkLearning2" />
               <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
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           </PATH>
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-      <pane id="Scope">
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           <PATH>
-            <PATH_ELEMENT USER_OBJECT="Root">
-              <option name="myItemId" value="" />
-              <option name="myItemType" value="" />
+            <PATH_ELEMENT>
+              <option name="myItemId" value="SparkLearning" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.ProjectViewProjectNode" />
             </PATH_ELEMENT>
-            <PATH_ELEMENT USER_OBJECT="SparkLearning1.5">
-              <option name="myItemId" value="" />
-              <option name="myItemType" value="" />
+            <PATH_ELEMENT>
+              <option name="myItemId" value="SparkLearning1" />
+              <option name="myItemType" value="com.intellij.ide.projectView.impl.nodes.PsiDirectoryNode" />
             </PATH_ELEMENT>
           </PATH>
         </subPane>
       </pane>
+      <pane id="Scratches" />
     </panes>
   </component>
   <component name="PropertiesComponent">
@@ -1070,12 +1089,11 @@
     </history-entry>
   </component>
   <component name="ToolWindowManager">
-    <frame x="8" y="8" width="1920" height="1040" extended-state="0" />
+    <frame x="-8" y="8" width="1920" height="1040" extended-state="0" />
     <editor active="true" />
     <layout>
       <window_info id="TODO" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33" sideWeight="0.5" order="6" side_tool="false" content_ui="tabs" />
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@@ -1085,7 +1103,7 @@
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+      <window_info id="Project" active="false" anchor="left" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="true" show_stripe_button="true" weight="0.34627658" sideWeight="0.5" order="0" side_tool="false" content_ui="combo" />
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@@ -1100,6 +1118,7 @@
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+      <window_info id="Messages" active="false" anchor="bottom" auto_hide="false" internal_type="DOCKED" type="DOCKED" visible="false" show_stripe_button="true" weight="0.33333334" sideWeight="0.5" order="7" side_tool="false" content_ui="tabs" />
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@@ -1150,76 +1169,16 @@
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+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/FeatureExtractionAndTransformation/ElementwiseProductSuite.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/FeatureExtractionAndTransformation/NormalizerFromSparkCodeSuite.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/basic/BlockMatrixSuite.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/clustering/LDALearning/LDASuite.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/basic/breezeLearning/testLinalg/VectorsLearning.scala" />
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@@ -1260,55 +1219,13 @@
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+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/mllib/DimensionalityReduction/PCAFromSparkCodeSuite.scala" />
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+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/sparkCSV/learning/readCsvBySparkSQLLoadAndRead.scala" />
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+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/sql/learning/SparkSQLExamplesFromJson.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/graphx/learning/ConnectedComponents.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/sparkCSV/learning/readCsvBySparkSQLLoad.scala" />
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@@ -1324,41 +1241,11 @@
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@@ -1366,78 +1253,15 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/pom.xml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="765">
-          <caret line="45" column="20" lean-forward="false" selection-start-line="45" selection-start-column="20" selection-end-line="45" selection-end-column="20" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/ml/Examples/EstimatorTransformerAndParam.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="306">
-          <caret line="23" column="42" lean-forward="false" selection-start-line="23" selection-start-column="42" selection-end-line="23" selection-end-column="42" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/avro/learning/AvroWritePartitioned.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="357">
-          <caret line="30" column="7" lean-forward="false" selection-start-line="30" selection-start-column="7" selection-end-line="30" selection-end-column="7" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/util/SparkLearningFunSuite.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="0">
-          <caret line="0" column="27" lean-forward="false" selection-start-line="0" selection-start-column="27" selection-end-line="0" selection-end-column="27" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/test/scala/org/apache/spark/streaming/testDstream.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="0">
-          <caret line="0" column="32" lean-forward="false" selection-start-line="0" selection-start-column="32" selection-end-line="0" selection-end-column="32" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/bdg/adam/learning/kmerSaveAsFile.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="238">
-          <caret line="22" column="41" lean-forward="false" selection-start-line="22" selection-start-column="35" selection-end-line="22" selection-end-column="41" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/examples/WordCountPartitions.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="357">
-          <caret line="28" column="1" lean-forward="false" selection-start-line="28" selection-start-column="1" selection-end-line="28" selection-end-column="1" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/ml/ann/ANNSuite.scala">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="425">
-          <caret line="40" column="29" lean-forward="false" selection-start-line="40" selection-start-column="29" selection-end-line="40" selection-end-column="29" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/Spark2Learning/pom.xml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="306">
-          <caret line="18" column="32" lean-forward="false" selection-start-line="18" selection-start-column="32" selection-end-line="18" selection-end-column="32" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/pom.xml" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/ml/Examples/EstimatorTransformerAndParam.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/avro/learning/AvroWritePartitioned.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/util/SparkLearningFunSuite.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/test/scala/org/apache/spark/streaming/testDstream.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/bdg/adam/learning/kmerSaveAsFile.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/examples/WordCountPartitions.scala" />
+    <entry file="file://$PROJECT_DIR$/SparkLearning1.5/src/main/scala/org/apache/spark/ml/ann/ANNSuite.scala" />
+    <entry file="file://$PROJECT_DIR$/Spark2Learning/pom.xml" />
     <entry file="file://$PROJECT_DIR$/SparkLearning2/pom.xml">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="306">
@@ -1521,18 +1345,11 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/SparkLearning.iml">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="-34">
-          <caret line="28" column="52" lean-forward="true" selection-start-line="28" selection-start-column="52" selection-end-line="28" selection-end-column="52" />
-          <folding />
-        </state>
-      </provider>
-    </entry>
+    <entry file="file://$PROJECT_DIR$/SparkLearning.iml" />
     <entry file="file://$PROJECT_DIR$/pom.xml">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="187">
-          <caret line="11" column="30" lean-forward="false" selection-start-line="11" selection-start-column="30" selection-end-line="11" selection-end-column="30" />
+        <state relative-caret-position="255">
+          <caret line="24" column="45" lean-forward="true" selection-start-line="24" selection-start-column="45" selection-end-line="24" selection-end-column="45" />
           <folding />
         </state>
       </provider>
@@ -1595,6 +1412,7 @@
             <option name="proportions">
               <list>
                 <option value="0.2" />
+                <option value="0.6" />
               </list>
             </option>
           </splitter-proportions>