EngineX-Iluvatar/enginex-mr_series-sherpa-onnx
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add blank_penalty for offline transducer (#542)

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chiiyeh
2024-01-25 15:00:09 +08:00
committed by GitHub
parent a9e7747736
commit 3bb3849ec5
13 changed files with 97 additions and 14 deletions
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6
sherpa-onnx/python/csrc/offline-recognizer.cc
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@@ -17,13 +17,14 @@ static void PybindOfflineRecognizerConfig(py::module *m) {
.def(py::init<const OfflineFeatureExtractorConfig &,
const OfflineModelConfig &, const OfflineLMConfig &,
const OfflineCtcFstDecoderConfig &, const std::string &,
int32_t, const std::string &, float>(),
int32_t, const std::string &, float, float>(),
py::arg("feat_config"), py::arg("model_config"),
py::arg("lm_config") = OfflineLMConfig(),
py::arg("ctc_fst_decoder_config") = OfflineCtcFstDecoderConfig(),
py::arg("decoding_method") = "greedy_search",
py::arg("max_active_paths") = 4, py::arg("hotwords_file") = "",
py::arg("hotwords_score") = 1.5)
py::arg("hotwords_score") = 1.5,
py::arg("blank_penalty") = 0.0)
.def_readwrite("feat_config", &PyClass::feat_config)
.def_readwrite("model_config", &PyClass::model_config)
.def_readwrite("lm_config", &PyClass::lm_config)
@@ -32,6 +33,7 @@ static void PybindOfflineRecognizerConfig(py::module *m) {
.def_readwrite("max_active_paths", &PyClass::max_active_paths)
.def_readwrite("hotwords_file", &PyClass::hotwords_file)
.def_readwrite("hotwords_score", &PyClass::hotwords_score)
.def_readwrite("blank_penalty", &PyClass::blank_penalty)
.def("__str__", &PyClass::ToString);
}

4
sherpa-onnx/python/sherpa_onnx/offline_recognizer.py
View File

@@ -48,6 +48,7 @@ class OfflineRecognizer(object):
max_active_paths: int = 4,
hotwords_file: str = "",
hotwords_score: float = 1.5,
blank_penalty: float = 0.0,
debug: bool = False,
provider: str = "cpu",
):
@@ -81,6 +82,8 @@ class OfflineRecognizer(object):
max_active_paths:
Maximum number of active paths to keep. Used only when
decoding_method is modified_beam_search.
blank_penalty:
The penalty applied on blank symbol during decoding.
debug:
True to show debug messages.
provider:
@@ -117,6 +120,7 @@ class OfflineRecognizer(object):
decoding_method=decoding_method,
hotwords_file=hotwords_file,
hotwords_score=hotwords_score,
blank_penalty=blank_penalty,
)
self.recognizer = _Recognizer(recognizer_config)
self.config = recognizer_config