import paddle.v2 as pdl
import paddle.v2.dataset.uci_housing as uci_housing
#模型初始化
pdl.init(use_gpu=False,trainer_count=1)

#数据
x = pdl.layer.data(name='x', type=pdl.data_type.dense_vector(13))
y_predict = pdl.layer.fc(input=x, size=1, act=pdl.activation.Linear())
y = pdl.layer.data(name='y',type=pdl.data_type.dense_vector(1))
cost=pdl.layer.mse_cost(input=y_predict,lable=y)

错误提示：

Traceback (most recent call last):
  File "//home/yuyingying/pythonProject/tryPaddle1/tryPaddle1.py", line 11, in 
    cost=pdl.layer.mse_cost(input=y_predict,lable=y)
AttributeError: 'module' object has no attribute 'mse_cost'

 是说没有mse_cost? 请问怎么解决这个问题？谢谢！