net_util.h

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/******************************************************************************
 * Copyright 2017 The Apollo Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *****************************************************************************/

#pragma once

#include <string>
#include <vector>

#include "Eigen/Dense"

#include "modules/prediction/proto/network_layers.pb.h"

namespace apollo {
namespace prediction {
namespace network {

float sigmoid(const float x);

float tanh(const float x);

float linear(const float x);

float hard_sigmoid(const float x);

float relu(const float x);

Eigen::MatrixXf FlattenMatrix(const Eigen::MatrixXf& matrix);

std::function<float(float)> serialize_to_function(const std::string& str);

bool LoadTensor(const TensorParameter& tensor_pb, Eigen::MatrixXf* matrix);

bool LoadTensor(const TensorParameter& tensor_pb, Eigen::VectorXf* vector);

bool LoadTensor(const TensorParameter& tensor_pb,
                std::vector<Eigen::MatrixXf>* const tensor3d);

}  // namespace network
}  // namespace prediction
}  // namespace apollo