metric_ops_test.py 文件源码

def test_sparse_tensor_value(self):
    predictions = [[0.1, 0.3, 0.2, 0.4], [0.1, 0.2, 0.3, 0.4]]
    labels = [[0, 0, 0, 1], [0, 0, 1, 0]]
    expected_precision = 0.5
    with self.test_session():
      _, precision = metrics.streaming_sparse_precision_at_k(
          predictions=tf.constant(predictions, tf.float32),
          labels=_binary_2d_label_to_sparse_value(labels), k=1)

      tf.initialize_variables(tf.local_variables()).run()

      self.assertEqual(expected_precision, precision.eval())