Converting numerical label to binomial ??

Axel

Hello everybody,

I'm just getting into RapidMiner and have a question about the label type of examples.
Some learners need nominal labels, but my data file has +1 & -1, which is recognized by CVSExampleSource as numerical.
I tried Numerical2Binomial, but that converts all attributs and not only my label attribute.
Finally, I used the AttributeDescriptionFileWizard to specify the type of my label attribute.

That works, but  I wonder if I could also solve this problem using an operator ??

Many thanks,

Axel

haddock

Hola!

The BinDiscretization operator does the trick, like this...

<operator name="Root" class="Process" expanded="yes">
    <operator name="ExampleSetGenerator" class="ExampleSetGenerator">
        <parameter key="target_function"	value="random"/>
    </operator>
    <operator name="ChangeAttributeRole" class="ChangeAttributeRole">
        <parameter key="name"	value="att1"/>
        <parameter key="target_role"	value="label"/>
    </operator>
    <operator name="AttributeSubsetPreprocessing" class="AttributeSubsetPreprocessing" expanded="yes">
        <parameter key="condition_class"	value="attribute_name_filter"/>
        <parameter key="attribute_name_regex"	value="att1"/>
        <parameter key="process_special_attributes"	value="true"/>
        <operator name="BinDiscretization" class="BinDiscretization">
            <parameter key="range_name_type"	value="short"/>
        </operator>
    </operator>
</operator>