ClusterDensityEvaluator

Shubha

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

land

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

Shubha

Thank you very much.

Shubha

..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

land

HI Shubba,
yes of course it is based on some scientific research paper, but unfortunantely I don't know which one.

Greetings,
  Sebastian