tf.contrib.metrics.f1_score无法导入

我正在尝试使用tf.contrib.metrics.f1_score计算F1分数，但这给我一个错误。我知道如何使用精度和召回率来计算它，但我想使用此功能。

我已经在带有tensorflow版本1.9.0的ubuntu 16.04 LTS上尝试了它，并带有gpu suport和没有gpu suport

from tensorflow.contrib.metrics import f1_score as ms

我收到此错误：

ImportError: Traceback (most recent call   last)
<ipython-input-6-627f14191ea2> in <module>()----> 1 from tensorflow.contrib.metrics import  f1_score as ms

ImportError: cannot import name 'f1_score'

和

from tensorflow.contrib import metrics as ms
ms.f1_score

我收到此错误：

AttributeError Traceback (most recent call last)
<ipython-input-8-c19f57465581> in <module>()
1 from tensorflow.contrib import metrics as ms
----> 2 ms.f1_score

AttributeError: module 'tensorflow.contrib.metrics' has no attribute 'f1_score'

我希望ms.f1_score会加载