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  JEdward RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 578 Unicorn

  January 2016

  Hi anamorillo,
  
  I just noticed this has been sitting without a reply.  It's actually really simple, just change that attribute to an ID role before your clustering. 
  Have a look at this example:

  <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  <process version="7.0.000">
    <context>
      <input/>
      <output/>
      <macros/>
    </context>
    <operator activated="true" class="process" compatibility="7.0.000" expanded="true" name="Process">
      <process expanded="true">
        <operator activated="true" class="retrieve" compatibility="7.0.000" expanded="true" height="68" name="Retrieve Products" width="90" x="45" y="136">
          <parameter key="repository_entry" value="//Samples/data/Products"/>
        </operator>
        <operator activated="true" class="select_attributes" compatibility="7.0.000" expanded="true" height="82" name="Select Attributes" width="90" x="112" y="34">
          <parameter key="attribute_filter_type" value="single"/>
          <parameter key="attribute" value="Product ID"/>
          <parameter key="invert_selection" value="true"/>
          <parameter key="include_special_attributes" value="true"/>
        </operator>
        <operator activated="true" class="set_role" compatibility="7.0.000" expanded="true" height="82" name="Set Role" width="90" x="313" y="187">
          <parameter key="attribute_name" value="Product Name"/>
          <parameter key="target_role" value="id"/>
          <list key="set_additional_roles"/>
        </operator>
        <operator activated="true" class="k_means" compatibility="7.0.000" expanded="true" height="82" name="Clustering" width="90" x="447" y="34">
          <parameter key="k" value="4"/>
        </operator>
        <connect from_op="Retrieve Products" from_port="output" to_op="Select Attributes" to_port="example set input"/>
        <connect from_op="Select Attributes" from_port="example set output" to_op="Set Role" to_port="example set input"/>
        <connect from_op="Set Role" from_port="example set output" to_op="Clustering" to_port="example set"/>
        <connect from_op="Clustering" from_port="cluster model" to_port="result 1"/>
        <connect from_op="Clustering" from_port="clustered set" 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>
  

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