layers.py 文件源码

def __init__(self, rng, input, n_in, n_out, dropout_rate, rescale,
                 W=None, b=None, b_v=0., activation=None):
        """
        rescale: Boolean. Can be only used when applying dropout.
        """
        if rescale:
            one = T.constant(1)
            retain_prob = one - dropout_rate
            input /= retain_prob

        super(DropoutHiddenLayer, self).__init__(
            input=input, n_in=n_in, n_out=n_out, W=W, b=b,
            activation=activation, rng=rng)
        if dropout_rate > 0.:
            self.output = dropout_from_layer(rng, self.output, p=dropout_rate)