Y = VL_DSIGMOID(X) returns the derivative of VL_SIGMOID(X). This is calculated as - VL_SIGMOID(X) * (1 - VL_SIGMOID(X)).
- See also
VL_SIGMOID(X), VL_HELP().
VLFeat.orgVL_DSIGMOIDY = VL_DSIGMOID(X) returns the derivative of VL_SIGMOID(X). This is calculated as - VL_SIGMOID(X) * (1 - VL_SIGMOID(X)).
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