tf-keras-skeleton.py 文件源码

def glorot_uniform(seed=None):
      """Glorot uniform initializer, also called Xavier uniform initializer.

      It draws samples from a uniform distribution within [-limit, limit]
      where `limit` is `sqrt(6 / (fan_in + fan_out))`
      where `fan_in` is the number of input units in the weight tensor
      and `fan_out` is the number of output units in the weight tensor.

      Arguments:
          seed: A Python integer. Used to seed the random generator.

      Returns:
          An initializer.

      References:
          Glorot & Bengio, AISTATS 2010
          http://jmlr.org/proceedings/papers/v9/glorot10a/glorot10a.pdf
      """
      return VarianceScaling(
          scale=1., mode='fan_avg', distribution='uniform', seed=seed)