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57 lines
2.1 KiB
57 lines
2.1 KiB
/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserved.
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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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#pragma once
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#include "paddle/fluid/framework/operator.h"
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#include "paddle/fluid/operators/math/beam_search.h"
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namespace paddle {
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namespace operators {
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template <typename DeviceContext, typename T>
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class BeamSearchOpKernel : public framework::OpKernel<T> {
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public:
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void Compute(const framework::ExecutionContext& context) const override {
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auto* ids = context.Input<framework::LoDTensor>("ids");
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auto* scores = context.Input<framework::LoDTensor>("scores");
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auto* pre_ids = context.Input<framework::LoDTensor>("pre_ids");
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auto* pre_scores = context.Input<framework::LoDTensor>("pre_scores");
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PADDLE_ENFORCE_NOT_NULL(scores);
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PADDLE_ENFORCE_NOT_NULL(pre_ids);
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PADDLE_ENFORCE_NOT_NULL(pre_scores);
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size_t level = context.Attr<int>("level");
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size_t beam_size = context.Attr<int>("beam_size");
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int end_id = context.Attr<int>("end_id");
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bool is_accumulated = context.Attr<bool>("is_accumulated");
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auto selected_ids = context.Output<framework::LoDTensor>("selected_ids");
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auto selected_scores =
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context.Output<framework::LoDTensor>("selected_scores");
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auto* parent_idx = context.Output<framework::Tensor>("parent_idx");
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PADDLE_ENFORCE_NOT_NULL(selected_ids);
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PADDLE_ENFORCE_NOT_NULL(selected_scores);
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math::BeamSearchFunctor<DeviceContext, T> alg;
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alg(context.template device_context<DeviceContext>(), pre_ids, pre_scores,
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ids, scores, selected_ids, selected_scores, parent_idx, level,
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beam_size, end_id, is_accumulated);
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}
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};
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} // namespace operators
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} // namespace paddle
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