The Complete SPRLIB & ANNLIB

DerDerTransDblSigmoid: - second derivative of transfer function

SYNOPSIS

double DerDerTransDblSigmoid

(unit)

ARGUMENTS

UNIT *unit A pointer to a UNIT structure.

RETURNS

The output of unit as calculated using the Value.Activation field value.

FUNCTION

The return value is 2 * g * (1 - g) * (2 - g), where g = TransSigmoid (unit).

SEE ALSO

TransDblSigmoid, DerTransDblSigmoid, TransLinear, TransTanH, TransParTanH, TransGauss, TransSigmoid, get_trans_func_name, get_trans_func_ptr, get_trans_func_no_pars

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