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Filter Examples With Multiple Valued Attriburtes ex: Cluster_1 and Cluster_2

dragoljub

Hi Guys,

Often after cluster analysis I have multiple clusters of interest. What is the easiest way to select all examples from cluster_1 and cluster_2. Ideally I would use filter examples for 'cluster=1 or cluster=2' but that does not work for me.

-Gagi

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haddock

Please note your can define a logical OR of several conditions with ||

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.0">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.0.0" expanded="true" name="Root">
    <parameter key="logverbosity" value="warning"/>
    <process expanded="true" height="406" width="835">
      <operator activated="true" class="retrieve" compatibility="5.0.0" expanded="true" height="60" name="Retrieve" width="90" x="45" y="30">
        <parameter key="repository_entry" value="../../data/Iris"/>
      </operator>
      <operator activated="true" class="k_means" compatibility="5.0.0" expanded="true" height="76" name="KMeans" width="90" x="180" y="30">
        <parameter key="k" value="3"/>
      </operator>
      <operator activated="true" class="apply_model" compatibility="5.0.0" expanded="true" height="76" name="ClusterModel2ExampleSet" width="90" x="315" y="30">
        <list key="application_parameters"/>
      </operator>
      <operator activated="true" class="filter_examples" compatibility="5.0.8" expanded="true" height="76" name="Filter Examples" width="90" x="514" y="30">
        <parameter key="condition_class" value="attribute_value_filter"/>
        <parameter key="parameter_string" value="cluster=cluster_0||cluster=cluster_1"/>
      </operator>
      <connect from_op="Retrieve" from_port="output" to_op="KMeans" to_port="example set"/>
      <connect from_op="KMeans" from_port="cluster model" to_op="ClusterModel2ExampleSet" to_port="model"/>
      <connect from_op="KMeans" from_port="clustered set" to_op="ClusterModel2ExampleSet" to_port="unlabelled data"/>
      <connect from_op="ClusterModel2ExampleSet" from_port="labelled data" to_op="Filter Examples" to_port="example set input"/>
      <connect from_op="Filter Examples" from_port="example set output" to_port="result 1"/>
      <connect from_op="Filter Examples" from_port="original" 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>

dragoljub

WOW that was super easy! Thanks Haddock! ;D

For everyone else who did not realize logical expressions are allowed in the filter examples operator:

Filter Examples-> Attribute_value_filter-> parameter string = cluster_0||cluster=cluster_1

-Gagi

land

Hi,
yes, sometimes everything becomes surprisingly easy if you read the documentation...

Greetings,
Sebastian

dragoljub

The help section for 'filter examples' mentions that you can use logical 'or', 'and' operators but in the example section of the attribute value filter it just has:

"Parameter string for the condition, e.g. 'attribute=value' for the AttributeValueFilter."

For someone who looks at a lot of documentation it seems this would be a perfect place to add another example 'attribute=value1||attribute=value2'. Or by the example mention that other operators such as && || can be used. A clear discussion of white space is also missing and often times I find that white space matters. When exploring different logical operators you never really know if you are entering wrong code or if white space is messing up your process.

I know these are small picky details but for this package to gain even more success these are the growing pains that documentation (and users) must go through. ;D

-Gagi

land

Hi Gagi,
if you see it that way, you will be really pleased to hear, that the RapidMiner Operator's documentation will be copied to our wiki soon. (In fact it's already there, but missing line breaks make it a pain to edit...). Then you will be able to add description as you want and contribute to other users and yourself. We will retrieve the documentation from the wiki and bundle it again with RapidMiner for each update.
We hope to make it easy enough, so that the operator documentation is finally updated.

Greetings,
Sebastian

dragoljub

That's great news Sebastian! If its easy to contribute I'm sure people will add/edit the documentation to help everyone! ;D

-Gagi

land

Hi,
well, I don't actually bet on this, but let's hope the best...

Greetings,
Sebastian

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