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Using the Correlation Matrix Operator Matrix Output

User: "BrianT"
New Altair Community Member
Updated by Jocelyn
In my project, I'm trying to reduce the amount of correlation in my dataset. The standard way we do this is to look at all the pair-wise correlations of attribute, isolate those pairs above .95 (in absolute), and remove the attribute from the pair that has the lower correlation with the independent variable.

The Correlation Matrix operator provides this pair-wise table that I could use. However, I haven't been able to figure out how to wire the green output node into another operator that I could use. I'd appreciate any help in accessing that data in a process and not just in the results.

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    User: "BalazsBaranyRM"
    New Altair Community Member
    Accepted Answer
    Hi,

    if you just want to remove the correlated attributes, the Remove Correlated Attributes operator is ready for you.

    If you want to do it manually, check out the "Matrix to ExampleSet" operator in the Converters extension. It converts your matrix to a table according to the options you set. Then you could for example filter the list, use Data to Weights and Select by Weights to eliminate the unwanted attributes.

    Regards,
    Balázs