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94 lines
2.8 KiB
94 lines
2.8 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License. */
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#include "CosSimLayer.h"
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#include "paddle/utils/Logging.h"
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#include "paddle/utils/Stat.h"
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namespace paddle {
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REGISTER_LAYER(cos, CosSimLayer);
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bool CosSimLayer::init(const LayerMap& layerMap,
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const ParameterMap& parameterMap) {
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/* Initialize the basic parent class */
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Layer::init(layerMap, parameterMap);
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CHECK_EQ(inputLayers_.size(), 2LU);
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createFunction(forward_,
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"CosSimForward",
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FuncConfig().set("scale", (real)config_.cos_scale()));
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createFunction(backward_,
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"CosSimBackward",
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FuncConfig().set("scale", (real)config_.cos_scale()));
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return true;
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}
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void CosSimLayer::forward(PassType passType) {
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Layer::forward(passType);
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/* malloc memory for the output_ if necessary */
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int batchSize = getInputValue(0)->getHeight();
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int size = getSize();
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CHECK_EQ(forward_.size(), 1UL) << "Only one forward function needed";
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{
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REGISTER_TIMER_INFO("CosFwResetTimer", getName().c_str());
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reserveOutput(batchSize, size);
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}
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MatrixPtr outV = getOutputValue();
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/* activation */ {
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REGISTER_TIMER_INFO("CosFwAtvTimer", getName().c_str());
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MatrixPtr prevOut1 = getInputValue(0);
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MatrixPtr prevOut2 = getInputValue(1);
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CHECK(outV && prevOut1 && prevOut2);
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BufferArgs inputs;
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BufferArgs outputs;
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inputs.addArg(*prevOut1);
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inputs.addArg(*prevOut2);
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outputs.addArg(*outV, ASSIGN_TO);
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forward_[0]->calc(inputs, outputs);
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}
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}
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void CosSimLayer::backward(const UpdateCallback& callback) {
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/* activation */ {
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REGISTER_TIMER_INFO("CosBpAtvTimer", getName().c_str());
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CHECK_EQ(backward_.size(), 1UL) << "Only one backward function needed";
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const auto outG = this->getOutputGrad();
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const auto outV = this->getOutputValue();
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const auto inV1 = this->getInputValue(0);
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const auto inV2 = this->getInputValue(1);
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auto inG1 = this->getInputGrad(0);
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auto inG2 = this->getInputGrad(1);
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CHECK(outG && outV && inV1 && inV2 && inG1 && inG2);
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BufferArgs inputs;
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BufferArgs outputs;
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inputs.addArg(*outG);
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inputs.addArg(*outV);
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inputs.addArg(*inV1);
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inputs.addArg(*inV2);
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outputs.addArg(*inG1, ADD_TO);
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outputs.addArg(*inG2, ADD_TO);
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backward_[0]->calc(inputs, outputs);
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}
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}
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} // namespace paddle
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