From 94de39dde2e616a01683c518023d0fab72b4e103 Mon Sep 17 00:00:00 2001
From: 游雁 <zhifu.gzf@alibaba-inc.com>
Date: 星期一, 19 二月 2024 22:21:50 +0800
Subject: [PATCH] aishell example
---
funasr/models/contextual_paraformer/model.py | 991 ++++++++++++++++++++++++++++-----------------------------
1 files changed, 487 insertions(+), 504 deletions(-)
diff --git a/funasr/models/contextual_paraformer/model.py b/funasr/models/contextual_paraformer/model.py
index c277ffc..3f79eed 100644
--- a/funasr/models/contextual_paraformer/model.py
+++ b/funasr/models/contextual_paraformer/model.py
@@ -1,533 +1,516 @@
+#!/usr/bin/env python3
+# -*- encoding: utf-8 -*-
+# Copyright FunASR (https://github.com/alibaba-damo-academy/FunASR). All Rights Reserved.
+# MIT License (https://opensource.org/licenses/MIT)
+
import os
+import re
+import time
+import torch
+import codecs
import logging
+import tempfile
+import requests
+import numpy as np
+from typing import Dict, Tuple
from contextlib import contextmanager
from distutils.version import LooseVersion
-from typing import Dict
-from typing import List
-from typing import Optional
-from typing import Tuple
-from typing import Union
-import tempfile
-import codecs
-import requests
-import re
-import copy
-import torch
-import torch.nn as nn
-import random
-import numpy as np
-import time
-# from funasr.layers.abs_normalize import AbsNormalize
+
+from funasr.register import tables
from funasr.losses.label_smoothing_loss import (
- LabelSmoothingLoss, # noqa: H301
+ LabelSmoothingLoss, # noqa: H301
)
-# from funasr.models.ctc import CTC
-# from funasr.models.decoder.abs_decoder import AbsDecoder
-# from funasr.models.e2e_asr_common import ErrorCalculator
-# from funasr.models.encoder.abs_encoder import AbsEncoder
-# from funasr.frontends.abs_frontend import AbsFrontend
-# from funasr.models.postencoder.abs_postencoder import AbsPostEncoder
-from funasr.models.paraformer.cif_predictor import mae_loss
-# from funasr.models.preencoder.abs_preencoder import AbsPreEncoder
-# from funasr.models.specaug.abs_specaug import AbsSpecAug
+from funasr.utils import postprocess_utils
+from funasr.metrics.compute_acc import th_accuracy
+from funasr.models.paraformer.model import Paraformer
+from funasr.utils.datadir_writer import DatadirWriter
+from funasr.models.paraformer.search import Hypothesis
+from funasr.train_utils.device_funcs import force_gatherable
from funasr.models.transformer.utils.add_sos_eos import add_sos_eos
from funasr.models.transformer.utils.nets_utils import make_pad_mask, pad_list
-from funasr.metrics.compute_acc import th_accuracy
-from funasr.train_utils.device_funcs import force_gatherable
-# from funasr.models.base_model import FunASRModel
-# from funasr.models.paraformer.cif_predictor import CifPredictorV3
-from funasr.models.paraformer.search import Hypothesis
+from funasr.utils.load_utils import load_audio_text_image_video, extract_fbank
if LooseVersion(torch.__version__) >= LooseVersion("1.6.0"):
- from torch.cuda.amp import autocast
+ from torch.cuda.amp import autocast
else:
- # Nothing to do if torch<1.6.0
- @contextmanager
- def autocast(enabled=True):
- yield
-from funasr.utils.load_utils import load_audio_and_text_image_video, extract_fbank
-from funasr.utils import postprocess_utils
-from funasr.utils.datadir_writer import DatadirWriter
+ # Nothing to do if torch<1.6.0
+ @contextmanager
+ def autocast(enabled=True):
+ yield
-
-from funasr.models.paraformer.model import Paraformer
-
-from funasr.register import tables
@tables.register("model_classes", "ContextualParaformer")
class ContextualParaformer(Paraformer):
- """
- Author: Speech Lab of DAMO Academy, Alibaba Group
- FunASR: A Fundamental End-to-End Speech Recognition Toolkit
- https://arxiv.org/abs/2305.11013
- """
-
- def __init__(
- self,
- *args,
- **kwargs,
- ):
- super().__init__(*args, **kwargs)
-
- self.target_buffer_length = kwargs.get("target_buffer_length", -1)
- inner_dim = kwargs.get("inner_dim", 256)
- bias_encoder_type = kwargs.get("bias_encoder_type", "lstm")
- use_decoder_embedding = kwargs.get("use_decoder_embedding", False)
- crit_attn_weight = kwargs.get("crit_attn_weight", 0.0)
- crit_attn_smooth = kwargs.get("crit_attn_smooth", 0.0)
- bias_encoder_dropout_rate = kwargs.get("bias_encoder_dropout_rate", 0.0)
+ """
+ Author: Speech Lab of DAMO Academy, Alibaba Group
+ FunASR: A Fundamental End-to-End Speech Recognition Toolkit
+ https://arxiv.org/abs/2305.11013
+ """
+
+ def __init__(
+ self,
+ *args,
+ **kwargs,
+ ):
+ super().__init__(*args, **kwargs)
+
+ self.target_buffer_length = kwargs.get("target_buffer_length", -1)
+ inner_dim = kwargs.get("inner_dim", 256)
+ bias_encoder_type = kwargs.get("bias_encoder_type", "lstm")
+ use_decoder_embedding = kwargs.get("use_decoder_embedding", False)
+ crit_attn_weight = kwargs.get("crit_attn_weight", 0.0)
+ crit_attn_smooth = kwargs.get("crit_attn_smooth", 0.0)
+ bias_encoder_dropout_rate = kwargs.get("bias_encoder_dropout_rate", 0.0)
- if bias_encoder_type == 'lstm':
- logging.warning("enable bias encoder sampling and contextual training")
- self.bias_encoder = torch.nn.LSTM(inner_dim, inner_dim, 1, batch_first=True, dropout=bias_encoder_dropout_rate)
- self.bias_embed = torch.nn.Embedding(self.vocab_size, inner_dim)
- elif bias_encoder_type == 'mean':
- logging.warning("enable bias encoder sampling and contextual training")
- self.bias_embed = torch.nn.Embedding(self.vocab_size, inner_dim)
- else:
- logging.error("Unsupport bias encoder type: {}".format(bias_encoder_type))
-
- if self.target_buffer_length > 0:
- self.hotword_buffer = None
- self.length_record = []
- self.current_buffer_length = 0
- self.use_decoder_embedding = use_decoder_embedding
- self.crit_attn_weight = crit_attn_weight
- if self.crit_attn_weight > 0:
- self.attn_loss = torch.nn.L1Loss()
- self.crit_attn_smooth = crit_attn_smooth
+ if bias_encoder_type == 'lstm':
+ self.bias_encoder = torch.nn.LSTM(inner_dim, inner_dim, 1, batch_first=True, dropout=bias_encoder_dropout_rate)
+ self.bias_embed = torch.nn.Embedding(self.vocab_size, inner_dim)
+ elif bias_encoder_type == 'mean':
+ self.bias_embed = torch.nn.Embedding(self.vocab_size, inner_dim)
+ else:
+ logging.error("Unsupport bias encoder type: {}".format(bias_encoder_type))
+
+ if self.target_buffer_length > 0:
+ self.hotword_buffer = None
+ self.length_record = []
+ self.current_buffer_length = 0
+ self.use_decoder_embedding = use_decoder_embedding
+ self.crit_attn_weight = crit_attn_weight
+ if self.crit_attn_weight > 0:
+ self.attn_loss = torch.nn.L1Loss()
+ self.crit_attn_smooth = crit_attn_smooth
- 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]:
- """Frontend + 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]
+ 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]:
+ """Frontend + 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]
- hotword_pad = kwargs.get("hotword_pad")
- hotword_lengths = kwargs.get("hotword_lengths")
- dha_pad = kwargs.get("dha_pad")
-
- # 1. Encoder
- encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
+ hotword_pad = kwargs.get("hotword_pad")
+ hotword_lengths = kwargs.get("hotword_lengths")
+ dha_pad = kwargs.get("dha_pad")
+
+ # 1. Encoder
+ encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
-
- loss_ctc, cer_ctc = None, None
-
- stats = dict()
-
- # 1. CTC branch
- if self.ctc_weight != 0.0:
- loss_ctc, cer_ctc = self._calc_ctc_loss(
- encoder_out, encoder_out_lens, text, text_lengths
- )
-
- # Collect CTC branch stats
- stats["loss_ctc"] = loss_ctc.detach() if loss_ctc is not None else None
- stats["cer_ctc"] = cer_ctc
-
+
+ loss_ctc, cer_ctc = None, None
+
+ stats = dict()
+
+ # 1. CTC branch
+ if self.ctc_weight != 0.0:
+ loss_ctc, cer_ctc = self._calc_ctc_loss(
+ encoder_out, encoder_out_lens, text, text_lengths
+ )
+
+ # Collect CTC branch stats
+ stats["loss_ctc"] = loss_ctc.detach() if loss_ctc is not None else None
+ stats["cer_ctc"] = cer_ctc
+
- # 2b. Attention decoder branch
- loss_att, acc_att, cer_att, wer_att, loss_pre, loss_ideal = self._calc_att_clas_loss(
- encoder_out, encoder_out_lens, text, text_lengths, hotword_pad, hotword_lengths
- )
-
- # 3. CTC-Att loss definition
- if self.ctc_weight == 0.0:
- loss = loss_att + loss_pre * self.predictor_weight
- else:
- loss = self.ctc_weight * loss_ctc + (1 - self.ctc_weight) * loss_att + loss_pre * self.predictor_weight
-
- if loss_ideal is not None:
- loss = loss + loss_ideal * self.crit_attn_weight
- stats["loss_ideal"] = loss_ideal.detach().cpu()
-
- # Collect Attn branch stats
- stats["loss_att"] = loss_att.detach() if loss_att is not None else None
- stats["acc"] = acc_att
- stats["cer"] = cer_att
- stats["wer"] = wer_att
- stats["loss_pre"] = loss_pre.detach().cpu() if loss_pre is not None else None
-
- stats["loss"] = torch.clone(loss.detach())
- # force_gatherable: to-device and to-tensor if scalar for DataParallel
- if self.length_normalized_loss:
- batch_size = int((text_lengths + self.predictor_bias).sum())
-
- loss, stats, weight = force_gatherable((loss, stats, batch_size), loss.device)
- return loss, stats, weight
-
-
- def _calc_att_clas_loss(
- self,
- encoder_out: torch.Tensor,
- encoder_out_lens: torch.Tensor,
- ys_pad: torch.Tensor,
- ys_pad_lens: torch.Tensor,
- hotword_pad: torch.Tensor,
- hotword_lengths: torch.Tensor,
- ):
- encoder_out_mask = (~make_pad_mask(encoder_out_lens, maxlen=encoder_out.size(1))[:, None, :]).to(
- encoder_out.device)
- if self.predictor_bias == 1:
- _, ys_pad = add_sos_eos(ys_pad, self.sos, self.eos, self.ignore_id)
- ys_pad_lens = ys_pad_lens + self.predictor_bias
- pre_acoustic_embeds, pre_token_length, _, _ = self.predictor(encoder_out, ys_pad, encoder_out_mask,
- ignore_id=self.ignore_id)
-
- # -1. bias encoder
- if self.use_decoder_embedding:
- hw_embed = self.decoder.embed(hotword_pad)
- else:
- hw_embed = self.bias_embed(hotword_pad)
- hw_embed, (_, _) = self.bias_encoder(hw_embed)
- _ind = np.arange(0, hotword_pad.shape[0]).tolist()
- selected = hw_embed[_ind, [i - 1 for i in hotword_lengths.detach().cpu().tolist()]]
- contextual_info = selected.squeeze(0).repeat(ys_pad.shape[0], 1, 1).to(ys_pad.device)
-
- # 0. sampler
- decoder_out_1st = None
- if self.sampling_ratio > 0.0:
- if self.step_cur < 2:
- logging.info("enable sampler in paraformer, sampling_ratio: {}".format(self.sampling_ratio))
- sematic_embeds, decoder_out_1st = self.sampler(encoder_out, encoder_out_lens, ys_pad, ys_pad_lens,
- pre_acoustic_embeds, contextual_info)
- else:
- if self.step_cur < 2:
- logging.info("disable sampler in paraformer, sampling_ratio: {}".format(self.sampling_ratio))
- sematic_embeds = pre_acoustic_embeds
-
- # 1. Forward decoder
- decoder_outs = self.decoder(
- encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, contextual_info=contextual_info
- )
- decoder_out, _ = decoder_outs[0], decoder_outs[1]
- '''
- if self.crit_attn_weight > 0 and attn.shape[-1] > 1:
- ideal_attn = ideal_attn + self.crit_attn_smooth / (self.crit_attn_smooth + 1.0)
- attn_non_blank = attn[:,:,:,:-1]
- ideal_attn_non_blank = ideal_attn[:,:,:-1]
- loss_ideal = self.attn_loss(attn_non_blank.max(1)[0], ideal_attn_non_blank.to(attn.device))
- else:
- loss_ideal = None
- '''
- loss_ideal = None
-
- if decoder_out_1st is None:
- decoder_out_1st = decoder_out
- # 2. Compute attention loss
- loss_att = self.criterion_att(decoder_out, ys_pad)
- acc_att = th_accuracy(
- decoder_out_1st.view(-1, self.vocab_size),
- ys_pad,
- ignore_label=self.ignore_id,
- )
- loss_pre = self.criterion_pre(ys_pad_lens.type_as(pre_token_length), pre_token_length)
-
- # Compute cer/wer using attention-decoder
- if self.training or self.error_calculator is None:
- cer_att, wer_att = None, None
- else:
- ys_hat = decoder_out_1st.argmax(dim=-1)
- cer_att, wer_att = self.error_calculator(ys_hat.cpu(), ys_pad.cpu())
-
- return loss_att, acc_att, cer_att, wer_att, loss_pre, loss_ideal
-
-
- def sampler(self, encoder_out, encoder_out_lens, ys_pad, ys_pad_lens, pre_acoustic_embeds, contextual_info):
- tgt_mask = (~make_pad_mask(ys_pad_lens, maxlen=ys_pad_lens.max())[:, :, None]).to(ys_pad.device)
- ys_pad = ys_pad * tgt_mask[:, :, 0]
- if self.share_embedding:
- ys_pad_embed = self.decoder.output_layer.weight[ys_pad]
- else:
- ys_pad_embed = self.decoder.embed(ys_pad)
- with torch.no_grad():
- decoder_outs = self.decoder(
- encoder_out, encoder_out_lens, pre_acoustic_embeds, ys_pad_lens, contextual_info=contextual_info
- )
- decoder_out, _ = decoder_outs[0], decoder_outs[1]
- pred_tokens = decoder_out.argmax(-1)
- nonpad_positions = ys_pad.ne(self.ignore_id)
- seq_lens = (nonpad_positions).sum(1)
- same_num = ((pred_tokens == ys_pad) & nonpad_positions).sum(1)
- input_mask = torch.ones_like(nonpad_positions)
- bsz, seq_len = ys_pad.size()
- for li in range(bsz):
- target_num = (((seq_lens[li] - same_num[li].sum()).float()) * self.sampling_ratio).long()
- if target_num > 0:
- input_mask[li].scatter_(dim=0,
- index=torch.randperm(seq_lens[li])[:target_num].to(pre_acoustic_embeds.device),
- value=0)
- input_mask = input_mask.eq(1)
- input_mask = input_mask.masked_fill(~nonpad_positions, False)
- input_mask_expand_dim = input_mask.unsqueeze(2).to(pre_acoustic_embeds.device)
-
- sematic_embeds = pre_acoustic_embeds.masked_fill(~input_mask_expand_dim, 0) + ys_pad_embed.masked_fill(
- input_mask_expand_dim, 0)
- return sematic_embeds * tgt_mask, decoder_out * tgt_mask
-
-
- def cal_decoder_with_predictor(self, encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, hw_list=None,
- clas_scale=1.0):
- if hw_list is None:
- hw_list = [torch.Tensor([1]).long().to(encoder_out.device)] # empty hotword list
- hw_list_pad = pad_list(hw_list, 0)
- if self.use_decoder_embedding:
- hw_embed = self.decoder.embed(hw_list_pad)
- else:
- hw_embed = self.bias_embed(hw_list_pad)
- hw_embed, (h_n, _) = self.bias_encoder(hw_embed)
- hw_embed = h_n.repeat(encoder_out.shape[0], 1, 1)
- else:
- hw_lengths = [len(i) for i in hw_list]
- hw_list_pad = pad_list([torch.Tensor(i).long() for i in hw_list], 0).to(encoder_out.device)
- if self.use_decoder_embedding:
- hw_embed = self.decoder.embed(hw_list_pad)
- else:
- hw_embed = self.bias_embed(hw_list_pad)
- hw_embed = torch.nn.utils.rnn.pack_padded_sequence(hw_embed, hw_lengths, batch_first=True,
- enforce_sorted=False)
- _, (h_n, _) = self.bias_encoder(hw_embed)
- hw_embed = h_n.repeat(encoder_out.shape[0], 1, 1)
-
- decoder_outs = self.decoder(
- encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, contextual_info=hw_embed, clas_scale=clas_scale
- )
- decoder_out = decoder_outs[0]
- decoder_out = torch.log_softmax(decoder_out, dim=-1)
- return decoder_out, ys_pad_lens
-
- def generate(self,
- data_in,
- data_lengths=None,
- key: list = None,
- tokenizer=None,
- frontend=None,
- **kwargs,
- ):
-
- # 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_and_text_image_video(data_in, fs=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=frontend)
- time3 = time.perf_counter()
- meta_data["extract_feat"] = f"{time3 - time2:0.3f}"
- meta_data[
- "batch_data_time"] = speech_lengths.sum().item() * frontend.frame_shift * frontend.lfr_n / 1000
-
- speech.to(device=kwargs["device"]), speech_lengths.to(device=kwargs["device"])
+ # 2b. Attention decoder branch
+ loss_att, acc_att, cer_att, wer_att, loss_pre, loss_ideal = self._calc_att_clas_loss(
+ encoder_out, encoder_out_lens, text, text_lengths, hotword_pad, hotword_lengths
+ )
+
+ # 3. CTC-Att loss definition
+ if self.ctc_weight == 0.0:
+ loss = loss_att + loss_pre * self.predictor_weight
+ else:
+ loss = self.ctc_weight * loss_ctc + (1 - self.ctc_weight) * loss_att + loss_pre * self.predictor_weight
+
+ if loss_ideal is not None:
+ loss = loss + loss_ideal * self.crit_attn_weight
+ stats["loss_ideal"] = loss_ideal.detach().cpu()
+
+ # Collect Attn branch stats
+ stats["loss_att"] = loss_att.detach() if loss_att is not None else None
+ stats["acc"] = acc_att
+ stats["cer"] = cer_att
+ stats["wer"] = wer_att
+ stats["loss_pre"] = loss_pre.detach().cpu() if loss_pre is not None else None
+
+ stats["loss"] = torch.clone(loss.detach())
+ # force_gatherable: to-device and to-tensor if scalar for DataParallel
+ if self.length_normalized_loss:
+ batch_size = int((text_lengths + self.predictor_bias).sum())
+
+ loss, stats, weight = force_gatherable((loss, stats, batch_size), loss.device)
+ return loss, stats, weight
+
+
+ def _calc_att_clas_loss(
+ self,
+ encoder_out: torch.Tensor,
+ encoder_out_lens: torch.Tensor,
+ ys_pad: torch.Tensor,
+ ys_pad_lens: torch.Tensor,
+ hotword_pad: torch.Tensor,
+ hotword_lengths: torch.Tensor,
+ ):
+ encoder_out_mask = (~make_pad_mask(encoder_out_lens, maxlen=encoder_out.size(1))[:, None, :]).to(
+ encoder_out.device)
+ if self.predictor_bias == 1:
+ _, ys_pad = add_sos_eos(ys_pad, self.sos, self.eos, self.ignore_id)
+ ys_pad_lens = ys_pad_lens + self.predictor_bias
+ pre_acoustic_embeds, pre_token_length, _, _ = self.predictor(encoder_out, ys_pad, encoder_out_mask,
+ ignore_id=self.ignore_id)
+
+ # -1. bias encoder
+ if self.use_decoder_embedding:
+ hw_embed = self.decoder.embed(hotword_pad)
+ else:
+ hw_embed = self.bias_embed(hotword_pad)
+ hw_embed, (_, _) = self.bias_encoder(hw_embed)
+ _ind = np.arange(0, hotword_pad.shape[0]).tolist()
+ selected = hw_embed[_ind, [i - 1 for i in hotword_lengths.detach().cpu().tolist()]]
+ contextual_info = selected.squeeze(0).repeat(ys_pad.shape[0], 1, 1).to(ys_pad.device)
+
+ # 0. sampler
+ decoder_out_1st = None
+ if self.sampling_ratio > 0.0:
+ if self.step_cur < 2:
+ logging.info("enable sampler in paraformer, sampling_ratio: {}".format(self.sampling_ratio))
+ sematic_embeds, decoder_out_1st = self.sampler(encoder_out, encoder_out_lens, ys_pad, ys_pad_lens,
+ pre_acoustic_embeds, contextual_info)
+ else:
+ if self.step_cur < 2:
+ logging.info("disable sampler in paraformer, sampling_ratio: {}".format(self.sampling_ratio))
+ sematic_embeds = pre_acoustic_embeds
+
+ # 1. Forward decoder
+ decoder_outs = self.decoder(
+ encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, contextual_info=contextual_info
+ )
+ decoder_out, _ = decoder_outs[0], decoder_outs[1]
+ '''
+ if self.crit_attn_weight > 0 and attn.shape[-1] > 1:
+ ideal_attn = ideal_attn + self.crit_attn_smooth / (self.crit_attn_smooth + 1.0)
+ attn_non_blank = attn[:,:,:,:-1]
+ ideal_attn_non_blank = ideal_attn[:,:,:-1]
+ loss_ideal = self.attn_loss(attn_non_blank.max(1)[0], ideal_attn_non_blank.to(attn.device))
+ else:
+ loss_ideal = None
+ '''
+ loss_ideal = None
+
+ if decoder_out_1st is None:
+ decoder_out_1st = decoder_out
+ # 2. Compute attention loss
+ loss_att = self.criterion_att(decoder_out, ys_pad)
+ acc_att = th_accuracy(
+ decoder_out_1st.view(-1, self.vocab_size),
+ ys_pad,
+ ignore_label=self.ignore_id,
+ )
+ loss_pre = self.criterion_pre(ys_pad_lens.type_as(pre_token_length), pre_token_length)
+
+ # Compute cer/wer using attention-decoder
+ if self.training or self.error_calculator is None:
+ cer_att, wer_att = None, None
+ else:
+ ys_hat = decoder_out_1st.argmax(dim=-1)
+ cer_att, wer_att = self.error_calculator(ys_hat.cpu(), ys_pad.cpu())
+
+ return loss_att, acc_att, cer_att, wer_att, loss_pre, loss_ideal
+
+
+ def sampler(self, encoder_out, encoder_out_lens, ys_pad, ys_pad_lens, pre_acoustic_embeds, contextual_info):
+ tgt_mask = (~make_pad_mask(ys_pad_lens, maxlen=ys_pad_lens.max())[:, :, None]).to(ys_pad.device)
+ ys_pad = ys_pad * tgt_mask[:, :, 0]
+ if self.share_embedding:
+ ys_pad_embed = self.decoder.output_layer.weight[ys_pad]
+ else:
+ ys_pad_embed = self.decoder.embed(ys_pad)
+ with torch.no_grad():
+ decoder_outs = self.decoder(
+ encoder_out, encoder_out_lens, pre_acoustic_embeds, ys_pad_lens, contextual_info=contextual_info
+ )
+ decoder_out, _ = decoder_outs[0], decoder_outs[1]
+ pred_tokens = decoder_out.argmax(-1)
+ nonpad_positions = ys_pad.ne(self.ignore_id)
+ seq_lens = (nonpad_positions).sum(1)
+ same_num = ((pred_tokens == ys_pad) & nonpad_positions).sum(1)
+ input_mask = torch.ones_like(nonpad_positions)
+ bsz, seq_len = ys_pad.size()
+ for li in range(bsz):
+ target_num = (((seq_lens[li] - same_num[li].sum()).float()) * self.sampling_ratio).long()
+ if target_num > 0:
+ input_mask[li].scatter_(dim=0,
+ index=torch.randperm(seq_lens[li])[:target_num].to(pre_acoustic_embeds.device),
+ value=0)
+ input_mask = input_mask.eq(1)
+ input_mask = input_mask.masked_fill(~nonpad_positions, False)
+ input_mask_expand_dim = input_mask.unsqueeze(2).to(pre_acoustic_embeds.device)
+
+ sematic_embeds = pre_acoustic_embeds.masked_fill(~input_mask_expand_dim, 0) + ys_pad_embed.masked_fill(
+ input_mask_expand_dim, 0)
+ return sematic_embeds * tgt_mask, decoder_out * tgt_mask
+
+
+ def cal_decoder_with_predictor(self, encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, hw_list=None,
+ clas_scale=1.0):
+ if hw_list is None:
+ hw_list = [torch.Tensor([1]).long().to(encoder_out.device)] # empty hotword list
+ hw_list_pad = pad_list(hw_list, 0)
+ if self.use_decoder_embedding:
+ hw_embed = self.decoder.embed(hw_list_pad)
+ else:
+ hw_embed = self.bias_embed(hw_list_pad)
+ hw_embed, (h_n, _) = self.bias_encoder(hw_embed)
+ hw_embed = h_n.repeat(encoder_out.shape[0], 1, 1)
+ else:
+ hw_lengths = [len(i) for i in hw_list]
+ hw_list_pad = pad_list([torch.Tensor(i).long() for i in hw_list], 0).to(encoder_out.device)
+ if self.use_decoder_embedding:
+ hw_embed = self.decoder.embed(hw_list_pad)
+ else:
+ hw_embed = self.bias_embed(hw_list_pad)
+ hw_embed = torch.nn.utils.rnn.pack_padded_sequence(hw_embed, hw_lengths, batch_first=True,
+ enforce_sorted=False)
+ _, (h_n, _) = self.bias_encoder(hw_embed)
+ hw_embed = h_n.repeat(encoder_out.shape[0], 1, 1)
+
+ decoder_outs = self.decoder(
+ encoder_out, encoder_out_lens, sematic_embeds, ys_pad_lens, contextual_info=hw_embed, clas_scale=clas_scale
+ )
+ decoder_out = decoder_outs[0]
+ decoder_out = torch.log_softmax(decoder_out, dim=-1)
+ return decoder_out, ys_pad_lens
+
+ def inference(self,
+ data_in,
+ data_lengths=None,
+ key: list = None,
+ tokenizer=None,
+ frontend=None,
+ **kwargs,
+ ):
+ # 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=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=frontend)
+ time3 = time.perf_counter()
+ meta_data["extract_feat"] = f"{time3 - time2:0.3f}"
+ meta_data[
+ "batch_data_time"] = speech_lengths.sum().item() * frontend.frame_shift * frontend.lfr_n / 1000
+
+ speech = speech.to(device=kwargs["device"])
+ speech_lengths = speech_lengths.to(device=kwargs["device"])
- # hotword
- self.hotword_list = self.generate_hotwords_list(kwargs.get("hotword", None), tokenizer=tokenizer, frontend=frontend)
-
- # Encoder
- encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
- if isinstance(encoder_out, tuple):
- encoder_out = encoder_out[0]
-
- # predictor
- predictor_outs = self.calc_predictor(encoder_out, encoder_out_lens)
- pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = predictor_outs[0], predictor_outs[1], \
- predictor_outs[2], predictor_outs[3]
- pre_token_length = pre_token_length.round().long()
- if torch.max(pre_token_length) < 1:
- return []
+ # hotword
+ self.hotword_list = self.generate_hotwords_list(kwargs.get("hotword", None), tokenizer=tokenizer, frontend=frontend)
+
+ # Encoder
+ encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
+ if isinstance(encoder_out, tuple):
+ encoder_out = encoder_out[0]
+
+ # predictor
+ predictor_outs = self.calc_predictor(encoder_out, encoder_out_lens)
+ pre_acoustic_embeds, pre_token_length, alphas, pre_peak_index = predictor_outs[0], predictor_outs[1], \
+ predictor_outs[2], predictor_outs[3]
+ pre_token_length = pre_token_length.round().long()
+ if torch.max(pre_token_length) < 1:
+ return []
- decoder_outs = self.cal_decoder_with_predictor(encoder_out, encoder_out_lens,
- pre_acoustic_embeds,
- pre_token_length,
- hw_list=self.hotword_list,
- clas_scale=kwargs.get("clas_scale", 1.0))
- decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
-
- results = []
- b, n, d = decoder_out.size()
- for i in range(b):
- x = encoder_out[i, :encoder_out_lens[i], :]
- am_scores = decoder_out[i, :pre_token_length[i], :]
- if self.beam_search is not None:
- nbest_hyps = self.beam_search(
- x=x, am_scores=am_scores, maxlenratio=kwargs.get("maxlenratio", 0.0),
- minlenratio=kwargs.get("minlenratio", 0.0)
- )
-
- nbest_hyps = nbest_hyps[: self.nbest]
- else:
-
- yseq = am_scores.argmax(dim=-1)
- score = am_scores.max(dim=-1)[0]
- score = torch.sum(score, dim=-1)
- # pad with mask tokens to ensure compatibility with sos/eos tokens
- yseq = torch.tensor(
- [self.sos] + yseq.tolist() + [self.eos], device=yseq.device
- )
- nbest_hyps = [Hypothesis(yseq=yseq, score=score)]
- for nbest_idx, hyp in enumerate(nbest_hyps):
- ibest_writer = None
- if ibest_writer is None and kwargs.get("output_dir") is not None:
- writer = DatadirWriter(kwargs.get("output_dir"))
- ibest_writer = 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))
-
- if tokenizer is not None:
- # 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], "text": text_postprocessed}
-
- 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
- else:
- result_i = {"key": key[i], "token_int": token_int}
- results.append(result_i)
-
- return results, meta_data
+ decoder_outs = self.cal_decoder_with_predictor(encoder_out, encoder_out_lens,
+ pre_acoustic_embeds,
+ pre_token_length,
+ hw_list=self.hotword_list,
+ clas_scale=kwargs.get("clas_scale", 1.0))
+ decoder_out, ys_pad_lens = decoder_outs[0], decoder_outs[1]
+
+ results = []
+ b, n, d = decoder_out.size()
+ for i in range(b):
+ x = encoder_out[i, :encoder_out_lens[i], :]
+ am_scores = decoder_out[i, :pre_token_length[i], :]
+ if self.beam_search is not None:
+ nbest_hyps = self.beam_search(
+ x=x, am_scores=am_scores, maxlenratio=kwargs.get("maxlenratio", 0.0),
+ minlenratio=kwargs.get("minlenratio", 0.0)
+ )
+
+ nbest_hyps = nbest_hyps[: self.nbest]
+ else:
+
+ yseq = am_scores.argmax(dim=-1)
+ score = am_scores.max(dim=-1)[0]
+ score = torch.sum(score, dim=-1)
+ # pad with mask tokens to ensure compatibility with sos/eos tokens
+ yseq = torch.tensor(
+ [self.sos] + yseq.tolist() + [self.eos], device=yseq.device
+ )
+ nbest_hyps = [Hypothesis(yseq=yseq, score=score)]
+ for nbest_idx, hyp in enumerate(nbest_hyps):
+ ibest_writer = None
+ if ibest_writer is None and kwargs.get("output_dir") is not None:
+ writer = DatadirWriter(kwargs.get("output_dir"))
+ ibest_writer = 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))
+
+ if tokenizer is not None:
+ # 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], "text": text_postprocessed}
+
+ 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
+ else:
+ result_i = {"key": key[i], "token_int": token_int}
+ results.append(result_i)
+
+ return results, meta_data
- def generate_hotwords_list(self, hotword_list_or_file, tokenizer=None, frontend=None):
- def load_seg_dict(seg_dict_file):
- seg_dict = {}
- assert isinstance(seg_dict_file, str)
- with open(seg_dict_file, "r", encoding="utf8") as f:
- lines = f.readlines()
- for line in lines:
- s = line.strip().split()
- key = s[0]
- value = s[1:]
- seg_dict[key] = " ".join(value)
- return seg_dict
-
- def seg_tokenize(txt, seg_dict):
- pattern = re.compile(r'^[\u4E00-\u9FA50-9]+$')
- out_txt = ""
- for word in txt:
- word = word.lower()
- if word in seg_dict:
- out_txt += seg_dict[word] + " "
- else:
- if pattern.match(word):
- for char in word:
- if char in seg_dict:
- out_txt += seg_dict[char] + " "
- else:
- out_txt += "<unk>" + " "
- else:
- out_txt += "<unk>" + " "
- return out_txt.strip().split()
-
- seg_dict = None
- if frontend.cmvn_file is not None:
- model_dir = os.path.dirname(frontend.cmvn_file)
- seg_dict_file = os.path.join(model_dir, 'seg_dict')
- if os.path.exists(seg_dict_file):
- seg_dict = load_seg_dict(seg_dict_file)
- else:
- seg_dict = None
- # for None
- if hotword_list_or_file is None:
- hotword_list = None
- # for local txt inputs
- elif os.path.exists(hotword_list_or_file) and hotword_list_or_file.endswith('.txt'):
- logging.info("Attempting to parse hotwords from local txt...")
- hotword_list = []
- hotword_str_list = []
- with codecs.open(hotword_list_or_file, 'r') as fin:
- for line in fin.readlines():
- hw = line.strip()
- hw_list = hw.split()
- if seg_dict is not None:
- hw_list = seg_tokenize(hw_list, seg_dict)
- hotword_str_list.append(hw)
- hotword_list.append(tokenizer.tokens2ids(hw_list))
- hotword_list.append([self.sos])
- hotword_str_list.append('<s>')
- logging.info("Initialized hotword list from file: {}, hotword list: {}."
- .format(hotword_list_or_file, hotword_str_list))
- # for url, download and generate txt
- elif hotword_list_or_file.startswith('http'):
- logging.info("Attempting to parse hotwords from url...")
- work_dir = tempfile.TemporaryDirectory().name
- if not os.path.exists(work_dir):
- os.makedirs(work_dir)
- text_file_path = os.path.join(work_dir, os.path.basename(hotword_list_or_file))
- local_file = requests.get(hotword_list_or_file)
- open(text_file_path, "wb").write(local_file.content)
- hotword_list_or_file = text_file_path
- hotword_list = []
- hotword_str_list = []
- with codecs.open(hotword_list_or_file, 'r') as fin:
- for line in fin.readlines():
- hw = line.strip()
- hw_list = hw.split()
- if seg_dict is not None:
- hw_list = seg_tokenize(hw_list, seg_dict)
- hotword_str_list.append(hw)
- hotword_list.append(tokenizer.tokens2ids(hw_list))
- hotword_list.append([self.sos])
- hotword_str_list.append('<s>')
- logging.info("Initialized hotword list from file: {}, hotword list: {}."
- .format(hotword_list_or_file, hotword_str_list))
- # for text str input
- elif not hotword_list_or_file.endswith('.txt'):
- logging.info("Attempting to parse hotwords as str...")
- hotword_list = []
- hotword_str_list = []
- for hw in hotword_list_or_file.strip().split():
- hotword_str_list.append(hw)
- hw_list = hw.strip().split()
- if seg_dict is not None:
- hw_list = seg_tokenize(hw_list, seg_dict)
- hotword_list.append(tokenizer.tokens2ids(hw_list))
- hotword_list.append([self.sos])
- hotword_str_list.append('<s>')
- logging.info("Hotword list: {}.".format(hotword_str_list))
- else:
- hotword_list = None
- return hotword_list
+ def generate_hotwords_list(self, hotword_list_or_file, tokenizer=None, frontend=None):
+ def load_seg_dict(seg_dict_file):
+ seg_dict = {}
+ assert isinstance(seg_dict_file, str)
+ with open(seg_dict_file, "r", encoding="utf8") as f:
+ lines = f.readlines()
+ for line in lines:
+ s = line.strip().split()
+ key = s[0]
+ value = s[1:]
+ seg_dict[key] = " ".join(value)
+ return seg_dict
+
+ def seg_tokenize(txt, seg_dict):
+ pattern = re.compile(r'^[\u4E00-\u9FA50-9]+$')
+ out_txt = ""
+ for word in txt:
+ word = word.lower()
+ if word in seg_dict:
+ out_txt += seg_dict[word] + " "
+ else:
+ if pattern.match(word):
+ for char in word:
+ if char in seg_dict:
+ out_txt += seg_dict[char] + " "
+ else:
+ out_txt += "<unk>" + " "
+ else:
+ out_txt += "<unk>" + " "
+ return out_txt.strip().split()
+
+ seg_dict = None
+ if frontend.cmvn_file is not None:
+ model_dir = os.path.dirname(frontend.cmvn_file)
+ seg_dict_file = os.path.join(model_dir, 'seg_dict')
+ if os.path.exists(seg_dict_file):
+ seg_dict = load_seg_dict(seg_dict_file)
+ else:
+ seg_dict = None
+ # for None
+ if hotword_list_or_file is None:
+ hotword_list = None
+ # for local txt inputs
+ elif os.path.exists(hotword_list_or_file) and hotword_list_or_file.endswith('.txt'):
+ logging.info("Attempting to parse hotwords from local txt...")
+ hotword_list = []
+ hotword_str_list = []
+ with codecs.open(hotword_list_or_file, 'r') as fin:
+ for line in fin.readlines():
+ hw = line.strip()
+ hw_list = hw.split()
+ if seg_dict is not None:
+ hw_list = seg_tokenize(hw_list, seg_dict)
+ hotword_str_list.append(hw)
+ hotword_list.append(tokenizer.tokens2ids(hw_list))
+ hotword_list.append([self.sos])
+ hotword_str_list.append('<s>')
+ logging.info("Initialized hotword list from file: {}, hotword list: {}."
+ .format(hotword_list_or_file, hotword_str_list))
+ # for url, download and generate txt
+ elif hotword_list_or_file.startswith('http'):
+ logging.info("Attempting to parse hotwords from url...")
+ work_dir = tempfile.TemporaryDirectory().name
+ if not os.path.exists(work_dir):
+ os.makedirs(work_dir)
+ text_file_path = os.path.join(work_dir, os.path.basename(hotword_list_or_file))
+ local_file = requests.get(hotword_list_or_file)
+ open(text_file_path, "wb").write(local_file.content)
+ hotword_list_or_file = text_file_path
+ hotword_list = []
+ hotword_str_list = []
+ with codecs.open(hotword_list_or_file, 'r') as fin:
+ for line in fin.readlines():
+ hw = line.strip()
+ hw_list = hw.split()
+ if seg_dict is not None:
+ hw_list = seg_tokenize(hw_list, seg_dict)
+ hotword_str_list.append(hw)
+ hotword_list.append(tokenizer.tokens2ids(hw_list))
+ hotword_list.append([self.sos])
+ hotword_str_list.append('<s>')
+ logging.info("Initialized hotword list from file: {}, hotword list: {}."
+ .format(hotword_list_or_file, hotword_str_list))
+ # for text str input
+ elif not hotword_list_or_file.endswith('.txt'):
+ logging.info("Attempting to parse hotwords as str...")
+ hotword_list = []
+ hotword_str_list = []
+ for hw in hotword_list_or_file.strip().split():
+ hotword_str_list.append(hw)
+ hw_list = hw.strip().split()
+ if seg_dict is not None:
+ hw_list = seg_tokenize(hw_list, seg_dict)
+ hotword_list.append(tokenizer.tokens2ids(hw_list))
+ hotword_list.append([self.sos])
+ hotword_str_list.append('<s>')
+ logging.info("Hotword list: {}.".format(hotword_str_list))
+ else:
+ hotword_list = None
+ return hotword_list
--
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