regularizers.py 文件源码

def sum_regularizer(regularizer_list, scope=None):
  """Returns a function that applies the sum of multiple regularizers.

  Args:
    regularizer_list: A list of regularizers to apply.
    scope: An optional scope name

  Returns:
    A function with signature `sum_reg(weights)` that applies the
    sum of all the input regularizers.
  """
  regularizer_list = [reg for reg in regularizer_list if reg is not None]
  if not regularizer_list:
    return None

  def sum_reg(weights):
    """Applies the sum of all the input regularizers."""
    with ops.name_scope(scope, 'sum_regularizer', [weights]) as name:
      regularizer_tensors = [reg(weights) for reg in regularizer_list]
      return math_ops.add_n(regularizer_tensors, name=name)

  return sum_reg