wehub-resource-sync
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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import math
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from dataclasses import dataclass, field
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from typing import Optional
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from fairseq.dataclass.configs import FairseqDataclass
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from fairseq.dataclass.constants import ChoiceEnum
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from omegaconf import MISSING
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DECODER_CHOICES = ChoiceEnum(["viterbi", "kenlm", "fairseqlm"])
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@dataclass
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class DecoderConfig(FairseqDataclass):
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type: DECODER_CHOICES = field(
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default="viterbi",
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metadata={"help": "The type of decoder to use"},
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)
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@dataclass
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class FlashlightDecoderConfig(FairseqDataclass):
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nbest: int = field(
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default=1,
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metadata={"help": "Number of decodings to return"},
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)
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unitlm: bool = field(
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default=False,
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metadata={"help": "If set, use unit language model"},
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)
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lmpath: str = field(
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default=MISSING,
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metadata={"help": "Language model for KenLM decoder"},
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)
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lexicon: Optional[str] = field(
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default=None,
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metadata={"help": "Lexicon for Flashlight decoder"},
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)
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beam: int = field(
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default=50,
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metadata={"help": "Number of beams to use for decoding"},
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)
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beamthreshold: float = field(
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default=50.0,
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metadata={"help": "Threshold for beam search decoding"},
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)
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beamsizetoken: Optional[int] = field(
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default=None, metadata={"help": "Beam size to use"}
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)
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wordscore: float = field(
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default=-1,
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metadata={"help": "Word score for KenLM decoder"},
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)
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unkweight: float = field(
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default=-math.inf,
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metadata={"help": "Unknown weight for KenLM decoder"},
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)
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silweight: float = field(
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default=0,
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metadata={"help": "Silence weight for KenLM decoder"},
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)
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lmweight: float = field(
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default=2,
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metadata={"help": "Weight for LM while interpolating score"},
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)
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