"Sentiment Analysis for documents-Beginner needs assistance"

schniederjans

Hello, I am very new to rapid miner and have searched for my question but can only find feedback regarding tweets. My problem is I have run my process (see below) and come up with question marks for the polarity and subjectivity and I'm not entirely sure why. I am analyzing the abstract of approximately 480 articles (approximately three-sentence to a paragraph long text documents). Below is the code and I am also attaching a screenshot of the results I am receiving. Any help will be greatly appreciated!

<?xml version="1.0" encoding="UTF-8"?><process version="8.1.001">
  <operator activated="true" class="read_excel" compatibility="8.1.000" expanded="true" height="68" name="Read Excel" width="90" x="45" y="85">
    <parameter key="excel_file" value="C:\Users\Dara\Desktop\dara\Digitization\Data.xlsx"/>
    <parameter key="sheet_selection" value="sheet number"/>
    <parameter key="sheet_number" value="1"/>
    <parameter key="imported_cell_range" value="A1:J483"/>
    <parameter key="encoding" value="SYSTEM"/>
    <parameter key="first_row_as_names" value="false"/>
    <list key="annotations">
      <parameter key="0" value="Name"/>
    </list>
    <parameter key="date_format" value=""/>
    <parameter key="time_zone" value="SYSTEM"/>
    <parameter key="locale" value="English (United States)"/>
    <parameter key="read_all_values_as_polynominal" value="false"/>
    <list key="data_set_meta_data_information">
      <parameter key="0" value="Number.true.integer.attribute"/>
      <parameter key="1" value="Article.true.text.attribute"/>
      <parameter key="2" value="Date.true.date_time.attribute"/>
      <parameter key="3" value="Title.true.text.attribute"/>
      <parameter key="4" value="Address.true.text.attribute"/>
      <parameter key="5" value="Type.true.text.attribute"/>
      <parameter key="6" value="Abstract.true.text.label"/>
      <parameter key="7" value="Country.true.text.attribute"/>
      <parameter key="8" value="Keywords.true.text.attribute"/>
      <parameter key="9" value="Publication.true.text.attribute"/>
    </list>
    <parameter key="read_not_matching_values_as_missings" value="true"/>
    <parameter key="datamanagement" value="double_array"/>
    <parameter key="data_management" value="auto"/>
  </operator>
</process>
<?xml version="1.0" encoding="UTF-8"?><process version="8.1.001">
  <operator activated="true" class="nominal_to_text" compatibility="8.1.001" expanded="true" height="82" name="Nominal to Text" width="90" x="112" y="238">
    <parameter key="attribute_filter_type" value="all"/>
    <parameter key="attribute" value=""/>
    <parameter key="attributes" value=""/>
    <parameter key="use_except_expression" value="false"/>
    <parameter key="value_type" value="nominal"/>
    <parameter key="use_value_type_exception" value="false"/>
    <parameter key="except_value_type" value="file_path"/>
    <parameter key="block_type" value="single_value"/>
    <parameter key="use_block_type_exception" value="false"/>
    <parameter key="except_block_type" value="single_value"/>
    <parameter key="invert_selection" value="false"/>
    <parameter key="include_special_attributes" value="false"/>
  </operator>
</process>
<?xml version="1.0" encoding="UTF-8"?><process version="8.1.001">
  <operator activated="true" class="com.aylien.textapi.rapidminer:aylien_sentiment" compatibility="0.2.000" expanded="true" height="68" name="Analyze Sentiment" width="90" x="380" y="238">
    <parameter key="connection" value="AylienDara"/>
    <parameter key="input_attribute" value="Article"/>
    <parameter key="sentiment_mode" value="document"/>
    <parameter key="Is input URL" value="false"/>
  </operator>
</process>

 

Thomas_Ott

@schniederjans chances are that you expended your daily API limit, that's why you're getting '?''s