pd、keras转onnx

在tensorflow2.1，keras2.3.1时,TF_KERAS=1保存为tf

keras.models.save_model(model, "model_save_path_1", save_format='tf')

pd 转onnx

 python -m tf2onnx.convert --saved-model ./saved_model.pb --opset 13 --output ./model.onnx

keras 转onnx

onnx_model = keras2onnx.convert_keras(model, model.name)
temp_model_file = 'model.onnx'
onnx.save_model(onnx_model, temp_model_file)

meta 文件转pd

        name_to_features = {
            "input_ids": tf.FixedLenFeature([FLAGS.max_seq_length], tf.int64),
            "input_mask": tf.FixedLenFeature([FLAGS.max_seq_length], tf.int64),
            "segment_ids": tf.FixedLenFeature([FLAGS.max_seq_length], tf.int64),
            "label_ids": tf.FixedLenFeature([], tf.int64),
            "is_real_example": tf.FixedLenFeature([], tf.int64),
        }
        def my_build_serving_input_receiver_fn(cols_description):
            def serving_input_receiver_fn():
                serialized_tf_example = tf.placeholder(dtype=tf.string, shape=None,
                                                       name='input_example_tensor')
                # key (e.g. 'examples') should be same with the inputKey when you
                # buid the request for prediction
                receiver_tensors = {'input_examples': serialized_tf_example}
                features = tf.parse_example(serialized_tf_example, cols_description)
                return tf.estimator.export.ServingInputReceiver(features, receiver_tensors)

            return serving_input_receiver_fn

        serving_input_receiver_fn = my_build_serving_input_receiver_fn(name_to_features)
        pb_export_dir = 'output_pd'
        estimator.export_saved_model(pb_export_dir, serving_input_receiver_fn=serving_input_receiver_fn)