"How to Calculate

It has been suggested that I calculate the "R" score on some of the models that I've trained.

Is there a function to do this in RM?

Thanks!

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Do you mean this one : http://en.wikipedia.org/wiki/R_score ?

If this is not correct, please provide a link or an explanation.

I've seen it referred to in texts as R²

Does that help?

Hi,

If this is what you mean...

http://en.wikipedia.org/wiki/Coefficient_of_determination

Then this might be what you are after

<operator name="RegressionPerformance" class="RegressionPerformance">
        <parameter key="main_criterion"	value="squared_correlation"/>
        <parameter key="skip_undefined_labels"	value="false"/>
        <parameter key="use_example_weights"	value="false"/>
    </operator>

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