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[SOLVED] Sentiment Analysis - Performance Vector not displayed

keshr3106keshr3106 Member Posts: 12 Contributor I
edited November 2018 in Help
Hello,

This is Keshav and I intend to use RapidMiner to do sentiment classification on reviews.

So, initially I used this tutorial: http://www.corequant.com/?p=1 to get me started.

I use the data found at http://www.cs.cornell.edu/People/pabo/movie-review-data/ as my training set.

The model uses Linear SVM to do the classification. Upon execution,I find that I do not find the required results as explained in the tutorial.

I do not get the required Performance  Vector at all.

Here is the XML code:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.013">
 <context>
   <input/>
   <output/>
   <macros/>
 </context>
 <operator activated="true" class="process" compatibility="5.3.013" expanded="true" name="Process">
   <process expanded="true">
     <operator activated="true" class="text:process_document_from_file" compatibility="5.3.002" expanded="true" height="76" name="Process Documents from Files" width="90" x="112" y="30">
       <list key="text_directories">
         <parameter key="negative" value="C:\Users\Keshav\Downloads\review_polarity\txt_sentoken\neg"/>
         <parameter key="positive" value="C:\Users\Keshav\Downloads\review_polarity\txt_sentoken\pos"/>
       </list>
       <parameter key="prune_method" value="percentual"/>
       <parameter key="prune_above_percent" value="95.0"/>
       <process expanded="true">
         <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize" width="90" x="112" y="75"/>
         <operator activated="true" class="text:filter_by_length" compatibility="5.3.002" expanded="true" height="60" name="Filter Tokens (by Length)" width="90" x="216" y="162"/>
         <operator activated="true" class="text:stem_porter" compatibility="5.3.002" expanded="true" height="60" name="Stem (Porter)" width="90" x="292" y="247"/>
         <operator activated="true" class="text:filter_stopwords_english" compatibility="5.3.002" expanded="true" height="60" name="Filter Stopwords (English)" width="90" x="421" y="338"/>
         <connect from_port="document" to_op="Tokenize" to_port="document"/>
         <connect from_op="Tokenize" from_port="document" to_op="Filter Tokens (by Length)" to_port="document"/>
         <connect from_op="Filter Tokens (by Length)" from_port="document" to_op="Stem (Porter)" to_port="document"/>
         <connect from_op="Stem (Porter)" from_port="document" to_op="Filter Stopwords (English)" to_port="document"/>
         <connect from_op="Filter Stopwords (English)" from_port="document" to_port="document 1"/>
         <portSpacing port="source_document" spacing="0"/>
         <portSpacing port="sink_document 1" spacing="0"/>
         <portSpacing port="sink_document 2" spacing="0"/>
       </process>
     </operator>
     <operator activated="true" class="x_validation" compatibility="5.3.013" expanded="true" height="112" name="Validation" width="90" x="313" y="30">
       <process expanded="true">
         <operator activated="true" class="support_vector_machine_linear" compatibility="5.3.013" expanded="true" height="76" name="SVM (Linear)" width="90" x="112" y="30"/>
         <connect from_port="training" to_op="SVM (Linear)" to_port="training set"/>
         <connect from_op="SVM (Linear)" from_port="model" to_port="model"/>
         <portSpacing port="source_training" spacing="0"/>
         <portSpacing port="sink_model" spacing="0"/>
         <portSpacing port="sink_through 1" spacing="0"/>
       </process>
       <process expanded="true">
         <operator activated="true" class="apply_model" compatibility="5.3.013" expanded="true" height="76" name="Apply Model" width="90" x="51" y="56">
           <list key="application_parameters"/>
         </operator>
         <operator activated="true" class="performance" compatibility="5.3.013" expanded="true" height="76" name="Performance" width="90" x="99" y="165"/>
         <connect from_port="model" to_op="Apply Model" to_port="model"/>
         <connect from_port="test set" to_op="Apply Model" to_port="unlabelled data"/>
         <connect from_op="Apply Model" from_port="labelled data" to_op="Performance" to_port="labelled data"/>
         <connect from_op="Performance" from_port="performance" to_port="averagable 1"/>
         <portSpacing port="source_model" spacing="0"/>
         <portSpacing port="source_test set" spacing="0"/>
         <portSpacing port="source_through 1" spacing="0"/>
         <portSpacing port="sink_averagable 1" spacing="0"/>
         <portSpacing port="sink_averagable 2" spacing="0"/>
       </process>
     </operator>
     <operator activated="true" class="store" compatibility="5.3.013" expanded="true" height="60" name="Store (2)" width="90" x="447" y="165">
       <parameter key="repository_entry" value="//Local Repository/rep1"/>
     </operator>
     <operator activated="true" class="store" compatibility="5.3.013" expanded="true" height="60" name="Store" width="90" x="112" y="165">
       <parameter key="repository_entry" value="//Local Repository/rep11"/>
     </operator>
     <connect from_op="Process Documents from Files" from_port="example set" to_op="Validation" to_port="training"/>
     <connect from_op="Process Documents from Files" from_port="word list" to_op="Store" to_port="input"/>
     <connect from_op="Validation" from_port="model" to_op="Store (2)" to_port="input"/>
     <connect from_op="Store (2)" from_port="through" to_port="result 1"/>
     <portSpacing port="source_input 1" spacing="0"/>
     <portSpacing port="sink_result 1" spacing="0"/>
     <portSpacing port="sink_result 2" spacing="0"/>
   </process>
 </operator>
</process>
[ /code]



Please help me out with this problem.

Thanks,
Keshav

Answers

  • Marco_BoeckMarco_Boeck Team Lead Software Engineering Administrator, Moderator, Employee, Member, University Professor Posts: 1,938   RM Engineering
    Hi,

    one of the pictures in the tutorial is missing a connection: You need to connect the "ave" port of the Validation operator to the process output. Then you will see the Performance Vector.

    Regards,
    Marco
  • keshr3106keshr3106 Member Posts: 12 Contributor I
    Hello Marco,

    Thank you very much for your help! It works now!
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