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Home MathPack Statis Class TCrossValidator Properties TNRate
See also: TPRate, FNRate, TNCnt 

TNRate


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

The array property TNRate returns the true negative rate for binary response variables, assuming that the binary target values are 1 and "not 1" (usually 0 or -1). TNRate 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 (negative) target value of a particular output variable is not equal to 0.0 the TNRate will be invalid because the true negative rate is defined only for binary classifiers assuming that a negatively identified observation is indicated by a response value of 0.0


Last Update: 2023-Dec-08