Read ARFF operator in RM5 RC

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  haddock Member Posts: 849 Maven

  December 2009

  Hi there Motaz,
  
  I too am slowly migrating to RM5, but as I spend most of my time on time-series I'm not rushing. I'm not having your problem, as I get a label parameter slot just beneath the file parameter slot in the 'read ARFF' operator. I just dragged and dropped it onto the Process tab, and connected to the output - but when it comes to 5 I really haven't got much of a clue! Here's the XML that resulted. Hope that helps!

  <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  <process version="5.0">
    <context>
      <input/>
      <output/>
      <macros/>
    </context>
    <operator activated="true" class="process" expanded="true" name="Process">
      <process expanded="true" height="-20" width="-50">
        <operator activated="true" class="read_arff" expanded="true" height="60" name="Read ARFF" width="90" x="61" y="74">
          <parameter key="data_file" value="C:\Documents and Settings\Alien\My Documents\rm_workspace\test.arff"/>
          <parameter key="label_attribute" value="label"/>
        </operator>
        <connect from_op="Read ARFF" from_port="output" to_port="result 1"/>
        <portSpacing port="source_input 1" spacing="36"/>
        <portSpacing port="sink_result 1" spacing="0"/>
        <portSpacing port="sink_result 2" spacing="0"/>
      </process>
    </operator>
  </process>
  

  Best wishes for a much better 2010!
  
  

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  land RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,531 Unicorn

  January 2010

  Hi all,
  the label attribute parameter has been removed for two reasons: You could simply add a set role operator afterwards for setting the label and on the other hand we want the user to utilize the repository instead of writing in arbitrary file formats. It's some sort of educational effort.
  Ok, the true reason is, that we wanted to unify all input operator's parameters. Some provided these parameters for defining class, some for id, label and so on. We decided to remove all of them, automatically add the set role operator when importing from 4.x instead of adding a huge list of parameters for each possible role...
  
  Greetings,
    Sebastian

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