def calc_broadcast_shape_from_param(params):
"""
Calculate the broadcast shape from params.
Args:
params (dict): parameters used to initialize distribution.
Returns:
tuple.
"""
broadcast_shape = []
for value in params.values():
if isinstance(value, (msp.bijector.Bijector, msp.distribution.Distribution)):
return params['distribution'].broadcast_shape
if isinstance(value, (str, type(params['dtype']))):
continue
if value is None:
return None
if isinstance(value, Parameter):
value_t = value.default_input
else:
value_t = cast_to_tensor(value, mstype.float32)
broadcast_shape = utils.get_broadcast_shape(
broadcast_shape, list(value_t.shape), params['name'])
return tuple(broadcast_shape)
def infer_shape(self, x_shape, y_shape):
return get_broadcast_shape(x_shape, y_shape)