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add modified beam search (#69)

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This commit is contained in:
PF Luo
2023-03-01 15:32:54 +08:00
committed by GitHub
parent e0b76655c8
commit 5326d0f81f
19 changed files with 614 additions and 87 deletions
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37
sherpa-onnx/csrc/online-transducer-modified-beam-search-decoder.h Normal file
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// sherpa-onnx/csrc/online-transducer-modified_beam-search-decoder.h
//
// Copyright (c) 2023 Pingfeng Luo
// Copyright (c) 2023 Xiaomi Corporation
#ifndef SHERPA_ONNX_CSRC_ONLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_
#define SHERPA_ONNX_CSRC_ONLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_
#include <vector>
#include "sherpa-onnx/csrc/online-transducer-decoder.h"
#include "sherpa-onnx/csrc/online-transducer-model.h"
namespace sherpa_onnx {
class OnlineTransducerModifiedBeamSearchDecoder
: public OnlineTransducerDecoder {
public:
OnlineTransducerModifiedBeamSearchDecoder(OnlineTransducerModel *model,
int32_t max_active_paths)
: model_(model), max_active_paths_(max_active_paths) {}
OnlineTransducerDecoderResult GetEmptyResult() const override;
void StripLeadingBlanks(OnlineTransducerDecoderResult *r) const override;
void Decode(Ort::Value encoder_out,
std::vector<OnlineTransducerDecoderResult> *result) override;
private:
OnlineTransducerModel *model_; // Not owned
int32_t max_active_paths_;
};
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_ONLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_