The NNET Procedure
HIDDEN Statement
HIDDEN number </options>;
The HIDDEN statement specifies the number of neurons or units in a hidden layer, which must be a positive integer. You can specify multiple HIDDEN statements; each HIDDEN statement represents a hidden layer.
You can specify the following options:
- ACT=EXP |IDENTITY |LOGISTIC |RECTIFIER |SIN |TANH
specifies the activation function for the hidden layer.
You can specify the following measures:
- EXP
specifies the exponential function.
- IDENTITY
specifies the identity function.
- LOGISTIC
specifies the logistic function.
- RECTIFIER
specifies the rectifier activation function.
- SIN
specifies the sine function.
- TANH
specifies the hyperbolic tangent function.
By default, ACT=TANH.
- COMB=ADD |LINEAR
specifies the combination function for the hidden layer.
You can specify the following functions:
- ADD
specifies the additive combination function.
- LINEAR
specifies the linear combination function.
By default, COMB=LINEAR.
HIDDEN statements are ignored when you specify the AUTOTUNE statement.