Generate Attribute with number of specific words in a cell

neginz

hi

I am a newbie . . .

I have some excel data and I want to Generate new Attribute with a number of specific word in it, without tokenizing or anything like that

how should I calculate that? can I do this with a regular expression?

for example, I want to count the word "out" in column star and generate new column with the number of the word "out" in it.

sorry for my English

lionelderkrikor

Hi @neginz,

 

Here a process which perform what you want to do : 

<?xml version="1.0" encoding="UTF-8"?><process version="8.2.001">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="8.2.001" expanded="true" name="Process">
    <process expanded="true">
      <operator activated="true" class="read_excel" compatibility="8.2.001" expanded="true" height="68" name="Read Excel" width="90" x="45" y="34">
        <parameter key="excel_file" value="C:\Users\Lionel\Documents\Formations_DataScience\Rapidminer\Tests_Rapidminer\Extract_Count_Word\Extract_Count_Word.xlsx"/>
        <parameter key="imported_cell_range" value="A1:B5"/>
        <parameter key="first_row_as_names" value="false"/>
        <list key="annotations">
          <parameter key="0" value="Name"/>
        </list>
        <list key="data_set_meta_data_information">
          <parameter key="0" value="star.true.polynominal.attribute"/>
          <parameter key="1" value="out.true.attribute_value.attribute"/>
        </list>
      </operator>
      <operator activated="true" class="generate_attributes" compatibility="8.2.001" expanded="true" height="82" name="Generate Attributes" width="90" x="179" y="34">
        <list key="function_descriptions">
          <parameter key="out" value="star"/>
        </list>
      </operator>
      <operator activated="true" class="set_macro" compatibility="8.2.001" expanded="true" height="82" name="Set word to count" width="90" x="313" y="34">
        <parameter key="macro" value="word"/>
        <parameter key="value" value="out"/>
      </operator>
      <operator activated="true" class="replace" compatibility="8.2.001" expanded="true" height="82" name="Replace" width="90" x="447" y="34">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="out"/>
        <parameter key="replace_what" value="\b(?!%{word}\b)\w+"/>
      </operator>
      <operator activated="true" class="replace" compatibility="8.2.001" expanded="true" height="82" name="Replace (2)" width="90" x="581" y="34">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="out"/>
        <parameter key="replace_what" value=","/>
      </operator>
      <operator activated="true" class="split" compatibility="8.2.001" expanded="true" height="82" name="Split" width="90" x="715" y="34">
        <parameter key="attribute_filter_type" value="single"/>
        <parameter key="attribute" value="out"/>
        <parameter key="split_pattern" value="[&quot;  &quot;]|[&quot; &quot;]"/>
      </operator>
      <operator activated="true" class="replace" compatibility="8.2.001" expanded="true" height="82" name="Replace (3)" width="90" x="849" y="34">
        <parameter key="attribute_filter_type" value="regular_expression"/>
        <parameter key="attribute" value="star"/>
        <parameter key="regular_expression" value="out.*"/>
        <parameter key="replace_what" value="[&quot; &quot;]"/>
        <parameter key="replace_by" value="?"/>
      </operator>
      <operator activated="true" class="generate_aggregation" compatibility="8.2.001" expanded="true" height="82" name="Generate Aggregation" width="90" x="983" y="34">
        <parameter key="attribute_name" value="out"/>
        <parameter key="attribute_filter_type" value="regular_expression"/>
        <parameter key="attribute" value="out"/>
        <parameter key="regular_expression" value="out.*"/>
        <parameter key="value_type" value="nominal"/>
        <parameter key="aggregation_function" value="count"/>
      </operator>
      <operator activated="true" class="select_attributes" compatibility="8.2.001" expanded="true" height="82" name="Select Attributes" width="90" x="1184" y="34">
        <parameter key="attribute_filter_type" value="regular_expression"/>
        <parameter key="regular_expression" value="out.*"/>
        <parameter key="use_except_expression" value="true"/>
        <parameter key="except_regular_expression" value="out"/>
        <parameter key="invert_selection" value="true"/>
      </operator>
      <connect from_op="Read Excel" from_port="output" to_op="Generate Attributes" to_port="example set input"/>
      <connect from_op="Generate Attributes" from_port="example set output" to_op="Set word to count" to_port="through 1"/>
      <connect from_op="Set word to count" from_port="through 1" to_op="Replace" to_port="example set input"/>
      <connect from_op="Replace" from_port="example set output" to_op="Replace (2)" to_port="example set input"/>
      <connect from_op="Replace (2)" from_port="example set output" to_op="Split" to_port="example set input"/>
      <connect from_op="Split" from_port="example set output" to_op="Replace (3)" to_port="example set input"/>
      <connect from_op="Replace (3)" from_port="example set output" to_op="Generate Aggregation" to_port="example set input"/>
      <connect from_op="Generate Aggregation" from_port="example set output" to_op="Select Attributes" to_port="example set input"/>
      <connect from_op="Select Attributes" from_port="example set output" 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>

You have to set the word to count in the parameters of Set Macro operator (in your case out) : 

 

I hope it helps,

 

Regards,

 

Lionel

Extract_Count_Word.png