From ec4ca408bf9656cdb2a39d1d122936931f3478a9 Mon Sep 17 00:00:00 2001
From: shixian.shi <shixian.shi@alibaba-inc.com>
Date: 星期三, 21 二月 2024 19:50:18 +0800
Subject: [PATCH] update transducer demo
---
funasr/models/bat/model.py | 488 -----------------------------------------------------
1 files changed, 3 insertions(+), 485 deletions(-)
diff --git a/funasr/models/bat/model.py b/funasr/models/bat/model.py
index 8e76b45..bdfcba6 100644
--- a/funasr/models/bat/model.py
+++ b/funasr/models/bat/model.py
@@ -13,6 +13,7 @@
from funasr.register import tables
from funasr.utils import postprocess_utils
from funasr.utils.datadir_writer import DatadirWriter
+from funasr.models.transducer.model import Transducer
from funasr.train_utils.device_funcs import force_gatherable
from funasr.models.transformer.scorers.ctc import CTCPrefixScorer
from funasr.losses.label_smoothing_loss import LabelSmoothingLoss
@@ -32,488 +33,5 @@
@tables.register("model_classes", "BAT") # TODO: BAT training
-class BAT(torch.nn.Module):
- def __init__(
- self,
- frontend: Optional[str] = None,
- frontend_conf: Optional[Dict] = None,
- specaug: Optional[str] = None,
- specaug_conf: Optional[Dict] = None,
- normalize: str = None,
- normalize_conf: Optional[Dict] = None,
- encoder: str = None,
- encoder_conf: Optional[Dict] = None,
- decoder: str = None,
- decoder_conf: Optional[Dict] = None,
- joint_network: str = None,
- joint_network_conf: Optional[Dict] = None,
- transducer_weight: float = 1.0,
- fastemit_lambda: float = 0.0,
- auxiliary_ctc_weight: float = 0.0,
- auxiliary_ctc_dropout_rate: float = 0.0,
- auxiliary_lm_loss_weight: float = 0.0,
- auxiliary_lm_loss_smoothing: float = 0.0,
- input_size: int = 80,
- vocab_size: int = -1,
- ignore_id: int = -1,
- blank_id: int = 0,
- sos: int = 1,
- eos: int = 2,
- lsm_weight: float = 0.0,
- length_normalized_loss: bool = False,
- # report_cer: bool = True,
- # report_wer: bool = True,
- # sym_space: str = "<space>",
- # sym_blank: str = "<blank>",
- # extract_feats_in_collect_stats: bool = True,
- share_embedding: bool = False,
- # preencoder: Optional[AbsPreEncoder] = None,
- # postencoder: Optional[AbsPostEncoder] = None,
- **kwargs,
- ):
-
- super().__init__()
-
- if specaug is not None:
- specaug_class = tables.specaug_classes.get(specaug)
- specaug = specaug_class(**specaug_conf)
- if normalize is not None:
- normalize_class = tables.normalize_classes.get(normalize)
- normalize = normalize_class(**normalize_conf)
- encoder_class = tables.encoder_classes.get(encoder)
- encoder = encoder_class(input_size=input_size, **encoder_conf)
- encoder_output_size = encoder.output_size()
-
- decoder_class = tables.decoder_classes.get(decoder)
- decoder = decoder_class(
- vocab_size=vocab_size,
- **decoder_conf,
- )
- decoder_output_size = decoder.output_size
-
- joint_network_class = tables.joint_network_classes.get(joint_network)
- joint_network = joint_network_class(
- vocab_size,
- encoder_output_size,
- decoder_output_size,
- **joint_network_conf,
- )
-
- self.criterion_transducer = None
- self.error_calculator = None
-
- self.use_auxiliary_ctc = auxiliary_ctc_weight > 0
- self.use_auxiliary_lm_loss = auxiliary_lm_loss_weight > 0
-
- if self.use_auxiliary_ctc:
- self.ctc_lin = torch.nn.Linear(encoder.output_size(), vocab_size)
- self.ctc_dropout_rate = auxiliary_ctc_dropout_rate
-
- if self.use_auxiliary_lm_loss:
- self.lm_lin = torch.nn.Linear(decoder.output_size, vocab_size)
- self.lm_loss_smoothing = auxiliary_lm_loss_smoothing
-
- self.transducer_weight = transducer_weight
- self.fastemit_lambda = fastemit_lambda
-
- self.auxiliary_ctc_weight = auxiliary_ctc_weight
- self.auxiliary_lm_loss_weight = auxiliary_lm_loss_weight
- self.blank_id = blank_id
- self.sos = sos if sos is not None else vocab_size - 1
- self.eos = eos if eos is not None else vocab_size - 1
- self.vocab_size = vocab_size
- self.ignore_id = ignore_id
- self.frontend = frontend
- self.specaug = specaug
- self.normalize = normalize
- self.encoder = encoder
- self.decoder = decoder
- self.joint_network = joint_network
-
- self.criterion_att = LabelSmoothingLoss(
- size=vocab_size,
- padding_idx=ignore_id,
- smoothing=lsm_weight,
- normalize_length=length_normalized_loss,
- )
-
- self.length_normalized_loss = length_normalized_loss
- self.beam_search = None
- self.ctc = None
- self.ctc_weight = 0.0
-
- def forward(
- self,
- speech: torch.Tensor,
- speech_lengths: torch.Tensor,
- text: torch.Tensor,
- text_lengths: torch.Tensor,
- **kwargs,
- ) -> Tuple[torch.Tensor, Dict[str, torch.Tensor], torch.Tensor]:
- """Encoder + Decoder + Calc loss
- Args:
- speech: (Batch, Length, ...)
- speech_lengths: (Batch, )
- text: (Batch, Length)
- text_lengths: (Batch,)
- """
- if len(text_lengths.size()) > 1:
- text_lengths = text_lengths[:, 0]
- if len(speech_lengths.size()) > 1:
- speech_lengths = speech_lengths[:, 0]
-
- batch_size = speech.shape[0]
- # 1. Encoder
- encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
- if hasattr(self.encoder, 'overlap_chunk_cls') and self.encoder.overlap_chunk_cls is not None:
- encoder_out, encoder_out_lens = self.encoder.overlap_chunk_cls.remove_chunk(encoder_out, encoder_out_lens,
- chunk_outs=None)
- # 2. Transducer-related I/O preparation
- decoder_in, target, t_len, u_len = get_transducer_task_io(
- text,
- encoder_out_lens,
- ignore_id=self.ignore_id,
- )
-
- # 3. Decoder
- self.decoder.set_device(encoder_out.device)
- decoder_out = self.decoder(decoder_in, u_len)
-
- # 4. Joint Network
- joint_out = self.joint_network(
- encoder_out.unsqueeze(2), decoder_out.unsqueeze(1)
- )
-
- # 5. Losses
- loss_trans, cer_trans, wer_trans = self._calc_transducer_loss(
- encoder_out,
- joint_out,
- target,
- t_len,
- u_len,
- )
-
- loss_ctc, loss_lm = 0.0, 0.0
-
- if self.use_auxiliary_ctc:
- loss_ctc = self._calc_ctc_loss(
- encoder_out,
- target,
- t_len,
- u_len,
- )
-
- if self.use_auxiliary_lm_loss:
- loss_lm = self._calc_lm_loss(decoder_out, target)
-
- loss = (
- self.transducer_weight * loss_trans
- + self.auxiliary_ctc_weight * loss_ctc
- + self.auxiliary_lm_loss_weight * loss_lm
- )
-
- stats = dict(
- loss=loss.detach(),
- loss_transducer=loss_trans.detach(),
- aux_ctc_loss=loss_ctc.detach() if loss_ctc > 0.0 else None,
- aux_lm_loss=loss_lm.detach() if loss_lm > 0.0 else None,
- cer_transducer=cer_trans,
- wer_transducer=wer_trans,
- )
-
- # force_gatherable: to-device and to-tensor if scalar for DataParallel
- loss, stats, weight = force_gatherable((loss, stats, batch_size), loss.device)
-
- return loss, stats, weight
-
- def encode(
- self, speech: torch.Tensor, speech_lengths: torch.Tensor, **kwargs,
- ) -> Tuple[torch.Tensor, torch.Tensor]:
- """Frontend + Encoder. Note that this method is used by asr_inference.py
- Args:
- speech: (Batch, Length, ...)
- speech_lengths: (Batch, )
- ind: int
- """
- with autocast(False):
-
- # Data augmentation
- if self.specaug is not None and self.training:
- speech, speech_lengths = self.specaug(speech, speech_lengths)
-
- # Normalization for feature: e.g. Global-CMVN, Utterance-CMVN
- if self.normalize is not None:
- speech, speech_lengths = self.normalize(speech, speech_lengths)
-
- # Forward encoder
- # feats: (Batch, Length, Dim)
- # -> encoder_out: (Batch, Length2, Dim2)
- encoder_out, encoder_out_lens, _ = self.encoder(speech, speech_lengths)
- intermediate_outs = None
- if isinstance(encoder_out, tuple):
- intermediate_outs = encoder_out[1]
- encoder_out = encoder_out[0]
-
- if intermediate_outs is not None:
- return (encoder_out, intermediate_outs), encoder_out_lens
-
- return encoder_out, encoder_out_lens
-
- def _calc_transducer_loss(
- self,
- encoder_out: torch.Tensor,
- joint_out: torch.Tensor,
- target: torch.Tensor,
- t_len: torch.Tensor,
- u_len: torch.Tensor,
- ) -> Tuple[torch.Tensor, Optional[float], Optional[float]]:
- """Compute Transducer loss.
-
- Args:
- encoder_out: Encoder output sequences. (B, T, D_enc)
- joint_out: Joint Network output sequences (B, T, U, D_joint)
- target: Target label ID sequences. (B, L)
- t_len: Encoder output sequences lengths. (B,)
- u_len: Target label ID sequences lengths. (B,)
-
- Return:
- loss_transducer: Transducer loss value.
- cer_transducer: Character error rate for Transducer.
- wer_transducer: Word Error Rate for Transducer.
-
- """
- if self.criterion_transducer is None:
- try:
- from warp_rnnt import rnnt_loss as RNNTLoss
- self.criterion_transducer = RNNTLoss
-
- except ImportError:
- logging.error(
- "warp-rnnt was not installed."
- "Please consult the installation documentation."
- )
- exit(1)
-
- log_probs = torch.log_softmax(joint_out, dim=-1)
-
- loss_transducer = self.criterion_transducer(
- log_probs,
- target,
- t_len,
- u_len,
- reduction="mean",
- blank=self.blank_id,
- fastemit_lambda=self.fastemit_lambda,
- gather=True,
- )
-
- if not self.training and (self.report_cer or self.report_wer):
- if self.error_calculator is None:
- from funasr.metrics import ErrorCalculatorTransducer as ErrorCalculator
-
- self.error_calculator = ErrorCalculator(
- self.decoder,
- self.joint_network,
- self.token_list,
- self.sym_space,
- self.sym_blank,
- report_cer=self.report_cer,
- report_wer=self.report_wer,
- )
-
- cer_transducer, wer_transducer = self.error_calculator(encoder_out, target, t_len)
-
- return loss_transducer, cer_transducer, wer_transducer
-
- return loss_transducer, None, None
-
- def _calc_ctc_loss(
- self,
- encoder_out: torch.Tensor,
- target: torch.Tensor,
- t_len: torch.Tensor,
- u_len: torch.Tensor,
- ) -> torch.Tensor:
- """Compute CTC loss.
-
- Args:
- encoder_out: Encoder output sequences. (B, T, D_enc)
- target: Target label ID sequences. (B, L)
- t_len: Encoder output sequences lengths. (B,)
- u_len: Target label ID sequences lengths. (B,)
-
- Return:
- loss_ctc: CTC loss value.
-
- """
- ctc_in = self.ctc_lin(
- torch.nn.functional.dropout(encoder_out, p=self.ctc_dropout_rate)
- )
- ctc_in = torch.log_softmax(ctc_in.transpose(0, 1), dim=-1)
-
- target_mask = target != 0
- ctc_target = target[target_mask].cpu()
-
- with torch.backends.cudnn.flags(deterministic=True):
- loss_ctc = torch.nn.functional.ctc_loss(
- ctc_in,
- ctc_target,
- t_len,
- u_len,
- zero_infinity=True,
- reduction="sum",
- )
- loss_ctc /= target.size(0)
-
- return loss_ctc
-
- def _calc_lm_loss(
- self,
- decoder_out: torch.Tensor,
- target: torch.Tensor,
- ) -> torch.Tensor:
- """Compute LM loss.
-
- Args:
- decoder_out: Decoder output sequences. (B, U, D_dec)
- target: Target label ID sequences. (B, L)
-
- Return:
- loss_lm: LM loss value.
-
- """
- lm_loss_in = self.lm_lin(decoder_out[:, :-1, :]).view(-1, self.vocab_size)
- lm_target = target.view(-1).type(torch.int64)
-
- with torch.no_grad():
- true_dist = lm_loss_in.clone()
- true_dist.fill_(self.lm_loss_smoothing / (self.vocab_size - 1))
-
- # Ignore blank ID (0)
- ignore = lm_target == 0
- lm_target = lm_target.masked_fill(ignore, 0)
-
- true_dist.scatter_(1, lm_target.unsqueeze(1), (1 - self.lm_loss_smoothing))
-
- loss_lm = torch.nn.functional.kl_div(
- torch.log_softmax(lm_loss_in, dim=1),
- true_dist,
- reduction="none",
- )
- loss_lm = loss_lm.masked_fill(ignore.unsqueeze(1), 0).sum() / decoder_out.size(
- 0
- )
-
- return loss_lm
-
- def init_beam_search(self,
- **kwargs,
- ):
-
- # 1. Build ASR model
- scorers = {}
-
- if self.ctc != None:
- ctc = CTCPrefixScorer(ctc=self.ctc, eos=self.eos)
- scorers.update(
- ctc=ctc
- )
- token_list = kwargs.get("token_list")
- scorers.update(
- length_bonus=LengthBonus(len(token_list)),
- )
-
- # 3. Build ngram model
- # ngram is not supported now
- ngram = None
- scorers["ngram"] = ngram
-
- beam_search = BeamSearchTransducer(
- self.decoder,
- self.joint_network,
- kwargs.get("beam_size", 2),
- nbest=1,
- )
- # beam_search.to(device=kwargs.get("device", "cpu"), dtype=getattr(torch, kwargs.get("dtype", "float32"))).eval()
- # for scorer in scorers.values():
- # if isinstance(scorer, torch.nn.Module):
- # scorer.to(device=kwargs.get("device", "cpu"), dtype=getattr(torch, kwargs.get("dtype", "float32"))).eval()
- self.beam_search = beam_search
-
- def inference(self,
- data_in: list,
- data_lengths: list=None,
- key: list=None,
- tokenizer=None,
- **kwargs,
- ):
-
- if kwargs.get("batch_size", 1) > 1:
- raise NotImplementedError("batch decoding is not implemented")
-
- # init beamsearch
- is_use_ctc = kwargs.get("decoding_ctc_weight", 0.0) > 0.00001 and self.ctc != None
- is_use_lm = kwargs.get("lm_weight", 0.0) > 0.00001 and kwargs.get("lm_file", None) is not None
- # if self.beam_search is None and (is_use_lm or is_use_ctc):
- logging.info("enable beam_search")
- self.init_beam_search(**kwargs)
- self.nbest = kwargs.get("nbest", 1)
-
- meta_data = {}
- # extract fbank feats
- time1 = time.perf_counter()
- audio_sample_list = load_audio_text_image_video(data_in, fs=self.frontend.fs, audio_fs=kwargs.get("fs", 16000))
- time2 = time.perf_counter()
- meta_data["load_data"] = f"{time2 - time1:0.3f}"
- speech, speech_lengths = extract_fbank(audio_sample_list, data_type=kwargs.get("data_type", "sound"), frontend=self.frontend)
- time3 = time.perf_counter()
- meta_data["extract_feat"] = f"{time3 - time2:0.3f}"
- meta_data["batch_data_time"] = speech_lengths.sum().item() * self.frontend.frame_shift * self.frontend.lfr_n / 1000
-
- speech = speech.to(device=kwargs["device"])
- speech_lengths = speech_lengths.to(device=kwargs["device"])
-
- # Encoder
- encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
- if isinstance(encoder_out, tuple):
- encoder_out = encoder_out[0]
-
- # c. Passed the encoder result and the beam search
- nbest_hyps = self.beam_search(encoder_out[0], is_final=True)
- nbest_hyps = nbest_hyps[: self.nbest]
-
- results = []
- b, n, d = encoder_out.size()
- for i in range(b):
-
- for nbest_idx, hyp in enumerate(nbest_hyps):
- ibest_writer = None
- if kwargs.get("output_dir") is not None:
- if not hasattr(self, "writer"):
- self.writer = DatadirWriter(kwargs.get("output_dir"))
- ibest_writer = self.writer[f"{nbest_idx + 1}best_recog"]
- # remove sos/eos and get results
- last_pos = -1
- if isinstance(hyp.yseq, list):
- token_int = hyp.yseq#[1:last_pos]
- else:
- token_int = hyp.yseq#[1:last_pos].tolist()
-
- # remove blank symbol id, which is assumed to be 0
- token_int = list(filter(lambda x: x != self.eos and x != self.sos and x != self.blank_id, token_int))
-
- # Change integer-ids to tokens
- token = tokenizer.ids2tokens(token_int)
- text = tokenizer.tokens2text(token)
-
- text_postprocessed, _ = postprocess_utils.sentence_postprocess(token)
- result_i = {"key": key[i], "token": token, "text": text, "text_postprocessed": text_postprocessed}
- results.append(result_i)
-
- if ibest_writer is not None:
- ibest_writer["token"][key[i]] = " ".join(token)
- ibest_writer["text"][key[i]] = text
- ibest_writer["text_postprocessed"][key[i]] = text_postprocessed
-
- return results, meta_data
-
+class BAT(Transducer):
+ pass
\ No newline at end of file
--
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