feature_column_ops_test.py 文件源码

def testEmbeddingColumnForDNN(self):
    hashed_sparse = tf.contrib.layers.sparse_column_with_hash_bucket("wire", 10)
    wire_tensor = tf.SparseTensor(values=["omar", "stringer", "marlo"],
                                  indices=[[0, 0], [1, 0], [1, 1]],
                                  shape=[2, 2])
    features = {"wire": wire_tensor}
    embeded_sparse = tf.contrib.layers.embedding_column(
        hashed_sparse, 1, combiner="sum", initializer=init_ops.ones_initializer)
    output = tf.contrib.layers.input_from_feature_columns(features,
                                                          [embeded_sparse])
    with self.test_session():
      tf.initialize_all_variables().run()
      # score: (number of values)
      self.assertAllEqual(output.eval(), [[1.], [2.]])