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Home MathPack Statis Class TCrossValidator Properties MatthewsCorr
See also: FPRate, RMSEP, TPRate 

MatthewsCorr


Unit: SDL_statis
Class: TCrossValidator
Declaration: property MatthewsCorr [varix: integer]: double

The array property MatthewsCorr returns Matthews correlation coefficient for binary response variables, assuming that the binary target values are 1 and "not 1" (usually 0 or -1). MatthewsCorr is automatically reset to its default value (-1.0) when the size of the test set is changed or if the cross validation is aborted (see OnCheckAbort event).

The parameter varix specifies the index of the response variable and may assume values between 1 and YMat.NrOfColumns.

Hint: If the (positive) target value of a particular output variable is not equal to 1.0 the MatthewsCorr will be invalid because the true positive rate is defined only for binary classifiers assuming that a positively identified observation is indicated by a response value of 1.0


Last Update: 2023-Dec-08