Extract Information & Tokenize delivers funny results

Legacy User

Hi there,

I am trying to tokenize text that I extract from a Webpage via XPath.
The extraction works fine, but when I use the Tokenize Operator the resulting Wordlist contains a lot of words that are not part of the extracted data.

I am guessing the Tokenize Operater tokenizes the original Text (which woud be the complete Webpage) but how can OI get RM to only tokenize the extracted text?

I cannot find any solution in this forum so I hope anyone has a good idea.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="web:get_webpage" compatibility="5.3.001" expanded="true" height="60" name="Get Page" width="90" x="112" y="30">
        <parameter key="url" value="http://www.tripadvisor.com/ShowTopic-g194739-i7938-k1383033-Europcar_rental_office-Chiusi_Tuscany.html"/>
        <parameter key="random_user_agent" value="true"/>
        <list key="query_parameters"/>
        <list key="request_properties"/>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents" width="90" x="246" y="30">
        <process expanded="true">
          <operator activated="true" class="text:extract_information" compatibility="5.3.002" expanded="true" height="60" name="Extract Information (3)" width="90" x="45" y="30">
            <parameter key="query_type" value="XPath"/>
            <list key="string_machting_queries"/>
            <list key="regular_expression_queries"/>
            <list key="regular_region_queries">
              <parameter key="extract" value="&lt;p&gt;+.&lt;/p&gt;"/>
            </list>
            <list key="xpath_queries">
              <parameter key="EXTRACT" value="string(//h:div[@class='postBody'][not(contains(.,'http://www.'))])"/>
            </list>
            <list key="namespaces"/>
            <list key="index_queries"/>
          </operator>
          <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize (3)" width="90" x="380" y="30"/>
          <connect from_port="document" to_op="Extract Information (3)" to_port="document"/>
          <connect from_op="Extract Information (3)" from_port="document" to_op="Tokenize (3)" to_port="document"/>
          <connect from_op="Tokenize (3)" 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>
      <connect from_op="Get Page" from_port="output" to_op="Process Documents" to_port="documents 1"/>
      <connect from_op="Process Documents" from_port="example set" to_port="result 1"/>
      <connect from_op="Process Documents" from_port="word list" to_port="result 2"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
      <portSpacing port="sink_result 3" spacing="0"/>
    </process>
  </operator>
</process>

mmarag

I tried this one but still nothing.....

its very strange indeed
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="web:get_webpage" compatibility="5.3.001" expanded="true" height="60" name="Get Page" width="90" x="112" y="30">
        <parameter key="url" value="http://www.tripadvisor.com/ShowTopic-g194739-i7938-k1383033-Europcar_rental_office-Chiusi_Tuscany.html"/>
        <parameter key="random_user_agent" value="true"/>
        <list key="query_parameters"/>
        <list key="request_properties"/>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents" width="90" x="313" y="75">
        <process expanded="true">
          <operator activated="true" class="text:extract_information" compatibility="5.3.002" expanded="true" height="60" name="Extract Information (3)" width="90" x="45" y="30">
            <parameter key="query_type" value="XPath"/>
            <list key="string_machting_queries"/>
            <list key="regular_expression_queries"/>
            <list key="regular_region_queries">
              <parameter key="extract" value="&lt;p&gt;+.&lt;/p&gt;"/>
            </list>
            <list key="xpath_queries">
              <parameter key="EXTRACT" value="string(//h:div[@class='postBody'][not(contains(.,'http://www.'))])"/>
            </list>
            <list key="namespaces"/>
            <list key="index_queries"/>
          </operator>
          <connect from_port="document" to_op="Extract Information (3)" to_port="document"/>
          <connect from_op="Extract Information (3)" 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="select_attributes" compatibility="5.3.015" expanded="true" height="76" name="Select Attributes" width="90" x="447" y="75">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="EXTRACT"/>
        <parameter key="include_special_attributes" value="true"/>
      </operator>
      <operator activated="true" class="nominal_to_text" compatibility="5.3.015" expanded="true" height="76" name="Nominal to Text" width="90" x="648" y="120">
        <parameter key="include_special_attributes" value="true"/>
      </operator>
      <operator activated="true" class="text:process_document_from_data" compatibility="5.3.002" expanded="true" height="76" name="Process Documents from Data" width="90" x="849" y="120">
        <list key="specify_weights"/>
        <process expanded="true">
          <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize" width="90" x="112" y="120"/>
          <connect from_port="document" to_op="Tokenize" to_port="document"/>
          <connect from_op="Tokenize" 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>
      <connect from_op="Get Page" from_port="output" to_op="Process Documents" to_port="documents 1"/>
      <connect from_op="Process Documents" from_port="example set" to_op="Select Attributes" to_port="example set input"/>
      <connect from_op="Select Attributes" from_port="example set output" to_op="Nominal to Text" to_port="example set input"/>
      <connect from_op="Nominal to Text" from_port="example set output" to_op="Process Documents from Data" to_port="example set"/>
      <connect from_op="Process Documents from Data" from_port="example set" to_port="result 1"/>
      <connect from_op="Process Documents from Data" from_port="word list" to_port="result 2"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
      <portSpacing port="sink_result 3" spacing="0"/>
    </process>
  </operator>
</process>

Legacy User

thanks mmarag, i figured it might be an issue with datatypes but still i does not make any sense to me.

anyone else got an idea? ???

Legacy User

I played around a bit more anf found a workaround:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.3.015">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.3.015" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="web:get_webpage" compatibility="5.3.001" expanded="true" height="60" name="Get Page" width="90" x="112" y="30">
        <parameter key="url" value="http://www.tripadvisor.com/ShowTopic-g194739-i7938-k1383033-Europcar_rental_office-Chiusi_Tuscany.html"/>
        <parameter key="random_user_agent" value="true"/>
        <list key="query_parameters"/>
        <list key="request_properties"/>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents" width="90" x="246" y="30">
        <process expanded="true">
          <operator activated="true" class="text:extract_information" compatibility="5.3.002" expanded="true" height="60" name="Extract Information (3)" width="90" x="45" y="30">
            <parameter key="query_type" value="XPath"/>
            <list key="string_machting_queries"/>
            <list key="regular_expression_queries"/>
            <list key="regular_region_queries">
              <parameter key="extract" value="&lt;p&gt;+.&lt;/p&gt;"/>
            </list>
            <list key="xpath_queries">
              <parameter key="EXTRACT" value="string(//h:div[@class='postBody'][not(contains(.,'http://www.'))])"/>
            </list>
            <list key="namespaces"/>
            <list key="index_queries"/>
          </operator>
          <connect from_port="document" to_op="Extract Information (3)" to_port="document"/>
          <connect from_op="Extract Information (3)" 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="text:data_to_documents" compatibility="5.3.002" expanded="true" height="60" name="Data to Documents" width="90" x="380" y="165">
        <parameter key="select_attributes_and_weights" value="true"/>
        <list key="specify_weights">
          <parameter key="EXTRACT" value="1.0"/>
        </list>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents (2)" width="90" x="581" y="165">
        <process expanded="true">
          <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize" width="90" x="112" y="30"/>
          <connect from_port="document" to_op="Tokenize" to_port="document"/>
          <connect from_op="Tokenize" 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>
      <connect from_op="Get Page" from_port="output" to_op="Process Documents" to_port="documents 1"/>
      <connect from_op="Process Documents" from_port="example set" to_op="Data to Documents" to_port="example set"/>
      <connect from_op="Process Documents" from_port="word list" to_port="result 1"/>
      <connect from_op="Data to Documents" from_port="documents" to_op="Process Documents (2)" to_port="documents 1"/>
      <connect from_op="Process Documents (2)" from_port="example set" to_port="result 2"/>
      <connect from_op="Process Documents (2)" from_port="word list" to_port="result 3"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
      <portSpacing port="sink_result 2" spacing="0"/>
      <portSpacing port="sink_result 3" spacing="0"/>
      <portSpacing port="sink_result 4" spacing="0"/>
    </process>
  </operator>
</process>

But I would still like to know why the tokenize op does not like the extract information op?

fras

You need a second "Process Documents", but "from Data" in this case because you have example sets.
And you have to switch one (or more) attributes role to "text" to start tokenizing.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="6.0.002">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="6.0.002" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="web:get_webpage" compatibility="5.3.001" expanded="true" height="60" name="Get Page" width="90" x="45" y="30">
        <parameter key="url" value="http://www.tripadvisor.com/ShowTopic-g194739-i7938-k1383033-Europcar_rental_office-Chiusi_Tuscany.html"/>
        <parameter key="random_user_agent" value="true"/>
        <list key="query_parameters"/>
        <list key="request_properties"/>
      </operator>
      <operator activated="true" class="text:process_documents" compatibility="5.3.002" expanded="true" height="94" name="Process Documents" width="90" x="179" y="30">
        <parameter key="create_word_vector" value="false"/>
        <process expanded="true">
          <operator activated="true" class="text:extract_information" compatibility="5.3.002" expanded="true" height="60" name="Extract Information (3)" width="90" x="45" y="30">
            <parameter key="query_type" value="XPath"/>
            <list key="string_machting_queries"/>
            <list key="regular_expression_queries"/>
            <list key="regular_region_queries">
              <parameter key="extract" value="&lt;p&gt;+.&lt;/p&gt;"/>
            </list>
            <list key="xpath_queries">
              <parameter key="EXTRACT" value="string(//h:div[@class='postBody'][not(contains(.,'http://www.'))])"/>
            </list>
            <list key="namespaces"/>
            <list key="index_queries"/>
          </operator>
          <connect from_port="document" to_op="Extract Information (3)" to_port="document"/>
          <connect from_op="Extract Information (3)" 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="nominal_to_text" compatibility="6.0.002" expanded="true" height="76" name="Nominal to Text" width="90" x="313" y="30">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="EXTRACT"/>
        <parameter key="include_special_attributes" value="true"/>
      </operator>
      <operator activated="true" class="text:process_document_from_data" compatibility="5.3.002" expanded="true" height="76" name="Process Documents from Data" width="90" x="447" y="30">
        <parameter key="vector_creation" value="Term Occurrences"/>
        <parameter key="keep_text" value="true"/>
        <list key="specify_weights"/>
        <process expanded="true">
          <operator activated="true" class="text:tokenize" compatibility="5.3.002" expanded="true" height="60" name="Tokenize (2)" width="90" x="246" y="30"/>
          <connect from_port="document" to_op="Tokenize (2)" to_port="document"/>
          <connect from_op="Tokenize (2)" 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>
      <connect from_op="Get Page" from_port="output" to_op="Process Documents" to_port="documents 1"/>
      <connect from_op="Process Documents" from_port="example set" to_op="Nominal to Text" to_port="example set input"/>
      <connect from_op="Nominal to Text" from_port="example set output" to_op="Process Documents from Data" to_port="example set"/>
      <connect from_op="Process Documents from Data" from_port="example set" to_port="result 2"/>
      <connect from_op="Process Documents from Data" from_port="word list" 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"/>
      <portSpacing port="sink_result 3" spacing="0"/>
    </process>
  </operator>
</process>