示例#1
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 def kl(self, other):
     a0 = self.logits - U.max(self.logits, axis=-1, keepdims=True)
     a1 = other.logits - U.max(other.logits, axis=-1, keepdims=True)
     ea0 = tf.exp(a0)
     ea1 = tf.exp(a1)
     z0 = U.sum(ea0, axis=-1, keepdims=True)
     z1 = U.sum(ea1, axis=-1, keepdims=True)
     p0 = ea0 / z0
     return U.sum(p0 * (a0 - tf.log(z0) - a1 + tf.log(z1)), axis=-1)
示例#2
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 def kl(self, other):
     assert isinstance(other, DiagGaussianPd)
     return U.sum(
         other.logstd - self.logstd +
         (tf.square(self.std) + tf.square(self.mean - other.mean)) /
         (2.0 * tf.square(other.std)) - 0.5,
         axis=-1)
示例#3
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 def entropy(self):
     return U.sum(tf.nn.sigmoid_cross_entropy_with_logits(
         logits=self.logits, labels=self.ps),
                  axis=-1)
示例#4
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 def kl(self, other):
     return U.sum(tf.nn.sigmoid_cross_entropy_with_logits(
         logits=other.logits, labels=self.ps),
                  axis=-1) - U.sum(tf.nn.sigmoid_cross_entropy_with_logits(
                      logits=self.logits, labels=self.ps),
                                   axis=-1)
示例#5
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 def neglogp(self, x):
     return U.sum(tf.nn.sigmoid_cross_entropy_with_logits(
         logits=self.logits, labels=tf.to_float(x)),
                  axis=-1)
示例#6
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 def entropy(self):
     return U.sum(self.logstd + .5 * np.log(2.0 * np.pi * np.e), axis=-1)
示例#7
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 def neglogp(self, x):
     return 0.5 * U.sum(tf.square((x - self.mean) / self.std), axis=-1) \
            + 0.5 * np.log(2.0 * np.pi) * tf.to_float(tf.shape(x)[-1]) \
            + U.sum(self.logstd, axis=-1)
示例#8
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 def entropy(self):
     a0 = self.logits - U.max(self.logits, axis=-1, keepdims=True)
     ea0 = tf.exp(a0)
     z0 = U.sum(ea0, axis=-1, keepdims=True)
     p0 = ea0 / z0
     return U.sum(p0 * (tf.log(z0) - a0), axis=-1)