ClusterDensityEvaluator

ShubhaShubha Member Posts: 139  Guru
edited November 2018 in Help
Hi,

I was working with the operator, "ClusterDensityEvaluator", with the below code.
<operator name="Root" class="Process" expanded="yes">
    <operator name="ExampleSetGenerator" class="ExampleSetGenerator">
        <parameter key="target_function" value="sum classification"/>
        <parameter key="number_examples" value="200"/>
        <parameter key="number_of_attributes" value="2"/>
    </operator>
    <operator name="KMeans" class="KMeans">
    </operator>
    <operator name="ClusterDensityEvaluator" class="ClusterDensityEvaluator" breakpoints="before">
    </operator>
</operator>
But the "ClusterDensityEvaluator" operator needs the SimilarityMeasure operator also to make it work. What 'SimilarityMeasure' is this? I meant the similarity measure from what to what?

Thanks for your help,
Shubha

Answers

  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,525   Unicorn
    Hi,
    this SimiliarityMeasure contains informations about the distance between each two examples. The below code will provide a SimiliarityMeasure
    <operator name="Root" class="Process" expanded="yes">
        <operator name="ExampleSetGenerator" class="ExampleSetGenerator">
            <parameter key="target_function" value="sum classification"/>
            <parameter key="number_examples" value="200"/>
            <parameter key="number_of_attributes" value="2"/>
        </operator>
        <operator name="ExampleSet2Similarity" class="ExampleSet2Similarity">
        </operator>
        <operator name="KMeans" class="KMeans">
        </operator>
        <operator name="ClusterDensityEvaluator" class="ClusterDensityEvaluator">
        </operator>
    </operator>
    Greetings,
      Sebastian
  • ShubhaShubha Member Posts: 139  Guru
    Thank you very much.
  • ShubhaShubha Member Posts: 139  Guru
    ..And can i get to know, how are the densities calculated based on these distances and the model? I meant to say, dod RM used any paper to perform this?

    Thanks,
    Shubha
  • landland RapidMiner Certified Analyst, RapidMiner Certified Expert, Member Posts: 2,525   Unicorn
    HI Shubba,
    yes of course it is based on some scientific research paper, but unfortunantely I don't know which one.

    Greetings,
      Sebastian
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