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Home MathPack Statis Class TCrossValidator Properties TNCnt
See also: TNRate 

TNCnt


Unit: SDL_statis
Class: TCrossValidator
Declaration: property TNCnt [varix: integer]: integer

The array property TNCnt returns the true negative count for binary response variables, assuming that the binary target values are 1 and "not 1" (usually 0 or -1). TNCnt is automatically reset to its default value (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 TNCnt 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