def sample_hidden_from_visible(self, visible):
"""Sample the hidden units from the visible units.
This is the Positive phase of the Contrastive Divergence algorithm.
:param visible: activations of the visible units
:return: tuple(hidden probabilities, hidden binary states)
"""
hprobs = tf.nn.sigmoid(tf.add(tf.matmul(visible, self.W), self.bh_))
hstates = utilities.sample_prob(hprobs, self.hrand)
return hprobs, hstates
def sample_hidden_from_visible(self, visible):
"""Sample the hidden units from the visible units.
This is the Positive phase of the Contrastive Divergence algorithm.
:param visible: activations of the visible units
:return: tuple(hidden probabilities, hidden binary states)
"""
hprobs = tf.nn.sigmoid(tf.matmul(visible, self.W) + self.bh_)
hstates = utilities.sample_prob(hprobs, self.hrand)
return hprobs, hstates