#ifndef CAFFE2_OPERATORS_CTC_BEAM_SEARCH_OP_H_
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#define CAFFE2_OPERATORS_CTC_BEAM_SEARCH_OP_H_
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#include "caffe2/core/context.h"
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#include "caffe2/core/operator.h"
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namespace caffe2 {
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template <class Context>
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class CTCBeamSearchDecoderOp : public Operator<Context> {
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public:
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USE_OPERATOR_CONTEXT_FUNCTIONS;
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template <class... Args>
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explicit CTCBeamSearchDecoderOp(Args&&... args)
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: Operator<Context>(std::forward<Args>(args)...) {
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beam_width_ = this->template GetSingleArgument<int32_t>("beam_width", 10);
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num_candidates_ =
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this->template GetSingleArgument<int32_t>("num_candidates", 1);
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prune_threshold_ =
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this->template GetSingleArgument<float>("prune_threshold", 0.001);
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DCHECK(beam_width_ >= num_candidates_);
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}
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bool RunOnDevice() override;
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protected:
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int32_t beam_width_;
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int32_t num_candidates_;
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float prune_threshold_;
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INPUT_TAGS(INPUTS, SEQ_LEN);
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OUTPUT_TAGS(OUTPUT_LEN, VALUES, OUTPUT_PROB);
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// Input: X, 3D tensor; L, 1D tensor. Output: Y sparse tensor
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};
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} // namespace caffe2
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#endif // CAFFE2_OPERATORS_CTC_BEAM_SEARCH_OP_H_
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