[SOLVED] Total occurrences of a attribute

TommyR22

Hello,
I work in a project of data mining with rapidminer.I have a .tsv file with attribute userid-artist-track.
Now i want that rapid count total occurrences of each artist in the exampleSet to find the most famous artist in dataset.
How can i do that?

thank you

awchisholm

Hello

The Aggregate operator is the one to use

Here's an example

<?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="subprocess" compatibility="5.3.013" expanded="true" height="76" name="make fake data" width="90" x="112" y="120">
        <process expanded="true">
          <operator activated="true" class="generate_data_user_specification" compatibility="5.3.013" expanded="true" height="60" name="Generate Data by User Specification" width="90" x="112" y="30">
            <list key="attribute_values">
              <parameter key="userid" value="1"/>
              <parameter key="artist" value="&quot;fred&quot;"/>
              <parameter key="track" value="&quot;track01&quot;"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_data_user_specification" compatibility="5.3.013" expanded="true" height="60" name="Generate Data by User Specification (2)" width="90" x="112" y="120">
            <list key="attribute_values">
              <parameter key="userid" value="1"/>
              <parameter key="artist" value="&quot;fred&quot;"/>
              <parameter key="track" value="&quot;track02&quot;"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="generate_data_user_specification" compatibility="5.3.013" expanded="true" height="60" name="Generate Data by User Specification (3)" width="90" x="112" y="210">
            <list key="attribute_values">
              <parameter key="userid" value="1"/>
              <parameter key="artist" value="&quot;bill&quot;"/>
              <parameter key="track" value="&quot;track01&quot;"/>
            </list>
            <list key="set_additional_roles"/>
          </operator>
          <operator activated="true" class="append" compatibility="5.3.013" expanded="true" height="112" name="Append" width="90" x="313" y="120"/>
          <connect from_op="Generate Data by User Specification" from_port="output" to_op="Append" to_port="example set 1"/>
          <connect from_op="Generate Data by User Specification (2)" from_port="output" to_op="Append" to_port="example set 2"/>
          <connect from_op="Generate Data by User Specification (3)" from_port="output" to_op="Append" to_port="example set 3"/>
          <connect from_op="Append" from_port="merged set" to_port="out 1"/>
          <portSpacing port="source_in 1" spacing="0"/>
          <portSpacing port="sink_out 1" spacing="0"/>
          <portSpacing port="sink_out 2" spacing="0"/>
        </process>
      </operator>
      <operator activated="true" class="aggregate" compatibility="5.3.013" expanded="true" height="76" name="Aggregate" width="90" x="313" y="120">
        <list key="aggregation_attributes">
          <parameter key="artist" value="count"/>
        </list>
        <parameter key="group_by_attributes" value="|artist"/>
      </operator>
      <connect from_op="make fake data" from_port="out 1" to_op="Aggregate" to_port="example set input"/>
      <connect from_op="Aggregate" 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>

regards

Andrew

TommyR22

thank you so much!
:P