Correlation between label and prediction?

Fred12
Fred12 New Altair Community Member
edited November 2024 in Community Q&A

hi,

in the performance(Classification) operator, correlation is defined as correlation between the label and the prediction, but how is this calculated? with which informaion criteria? I dont understand the results...

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Answers

  • MartinLiebig
    MartinLiebig
    Altair Employee

    I think its standard pearson correlation with by using the integer mapping of the classes.

     

    ~Martin

  • IngoRM
    IngoRM New Altair Community Member

    Hi,

     

    Just looked up the Java doc and here is what it says: Computes the empirical corelation coefficient 'r' between label and prediction. For P=prediction, L=label, V=Variance, Cov=Covariance we calculate r by: Cov(L,P) / sqrt(V(L)*V(P))

     

    So it is the Pearson correlation between the label and the prediction.  Judging from a quick check of the source code itself this description is accurate.

     

    Cheers,

    Ingo

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