8562711252
* Implement context graph * Modify the interface to support context biasing * Support context biasing in modified beam search; add python wrapper * Support context biasing in python api example * Minor fixes * Fix context graph * Minor fixes * Fix tests * Fix style * Fix style * Fix comments * Minor fixes * Add missing header * Replace std::shared_ptr with std::unique_ptr for effciency * Build graph in constructor * Fix comments * Minor fixes * Fix docs
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
// sherpa-onnx/csrc/offline-transducer-modified-beam-search-decoder.h
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//
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// Copyright (c) 2023 Xiaomi Corporation
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#ifndef SHERPA_ONNX_CSRC_OFFLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_
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#define SHERPA_ONNX_CSRC_OFFLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_
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#include <vector>
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#include "sherpa-onnx/csrc/offline-lm.h"
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#include "sherpa-onnx/csrc/offline-transducer-decoder.h"
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#include "sherpa-onnx/csrc/offline-transducer-model.h"
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namespace sherpa_onnx {
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class OfflineTransducerModifiedBeamSearchDecoder
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: public OfflineTransducerDecoder {
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public:
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OfflineTransducerModifiedBeamSearchDecoder(OfflineTransducerModel *model,
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OfflineLM *lm,
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int32_t max_active_paths,
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float lm_scale)
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: model_(model),
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lm_(lm),
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max_active_paths_(max_active_paths),
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lm_scale_(lm_scale) {}
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std::vector<OfflineTransducerDecoderResult> Decode(
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Ort::Value encoder_out, Ort::Value encoder_out_length,
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OfflineStream **ss = nullptr, int32_t n = 0) override;
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private:
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OfflineTransducerModel *model_; // Not owned
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OfflineLM *lm_; // Not owned; may be nullptr
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int32_t max_active_paths_;
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float lm_scale_; // used only when lm_ is not nullptr
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};
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} // namespace sherpa_onnx
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#endif // SHERPA_ONNX_CSRC_OFFLINE_TRANSDUCER_MODIFIED_BEAM_SEARCH_DECODER_H_
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