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嘉渊 2023-04-24 23:15:20 +08:00
parent ec383fba56
commit e358063f03
1 changed files with 2 additions and 85 deletions
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87
funasr/models/e2e_asr_paraformer.py
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@ -92,17 +92,8 @@ class Paraformer(FunASRModel):
self.frontend = frontend
self.specaug = specaug
self.normalize = normalize
self.preencoder = preencoder
self.postencoder = postencoder
self.encoder = encoder
if not hasattr(self.encoder, "interctc_use_conditioning"):
self.encoder.interctc_use_conditioning = False
if self.encoder.interctc_use_conditioning:
self.encoder.conditioning_layer = torch.nn.Linear(
vocab_size, self.encoder.output_size()
)
self.error_calculator = None
if ctc_weight == 1.0:
@ -170,9 +161,7 @@ class Paraformer(FunASRModel):
# 1. Encoder
encoder_out, encoder_out_lens = self.encode(speech, speech_lengths)
intermediate_outs = None
if isinstance(encoder_out, tuple):
intermediate_outs = encoder_out[1]
encoder_out = encoder_out[0]
loss_att, acc_att, cer_att, wer_att = None, None, None, None
@ -190,30 +179,6 @@ class Paraformer(FunASRModel):
stats["loss_ctc"] = loss_ctc.detach() if loss_ctc is not None else None
stats["cer_ctc"] = cer_ctc
# Intermediate CTC (optional)
loss_interctc = 0.0
if self.interctc_weight != 0.0 and intermediate_outs is not None:
for layer_idx, intermediate_out in intermediate_outs:
# we assume intermediate_out has the same length & padding
# as those of encoder_out
loss_ic, cer_ic = self._calc_ctc_loss(
intermediate_out, encoder_out_lens, text, text_lengths
)
loss_interctc = loss_interctc + loss_ic
# Collect Intermedaite CTC stats
stats["loss_interctc_layer{}".format(layer_idx)] = (
loss_ic.detach() if loss_ic is not None else None
)
stats["cer_interctc_layer{}".format(layer_idx)] = cer_ic
loss_interctc = loss_interctc / len(intermediate_outs)
# calculate whole encoder loss
loss_ctc = (
1 - self.interctc_weight
) * loss_ctc + self.interctc_weight * loss_interctc
# 2b. Attention decoder branch
if self.ctc_weight != 1.0:
loss_att, acc_att, cer_att, wer_att, loss_pre = self._calc_att_loss(
@ -281,29 +246,8 @@ class Paraformer(FunASRModel):
if self.normalize is not None:
feats, feats_lengths = self.normalize(feats, feats_lengths)
# Pre-encoder, e.g. used for raw input data
if self.preencoder is not None:
feats, feats_lengths = self.preencoder(feats, feats_lengths)
# 4. Forward encoder
# feats: (Batch, Length, Dim)
# -> encoder_out: (Batch, Length2, Dim2)
if self.encoder.interctc_use_conditioning:
encoder_out, encoder_out_lens, _ = self.encoder(
feats, feats_lengths, ctc=self.ctc
)
else:
encoder_out, encoder_out_lens, _ = self.encoder(feats, feats_lengths)
intermediate_outs = None
if isinstance(encoder_out, tuple):
intermediate_outs = encoder_out[1]
encoder_out = encoder_out[0]
# Post-encoder, e.g. NLU
if self.postencoder is not None:
encoder_out, encoder_out_lens = self.postencoder(
encoder_out, encoder_out_lens
)
encoder_out, encoder_out_lens, _ = self.encoder(feats, feats_lengths)
assert encoder_out.size(0) == speech.size(0), (
encoder_out.size(),
@ -314,9 +258,6 @@ class Paraformer(FunASRModel):
encoder_out_lens.max(),
)
if intermediate_outs is not None:
return (encoder_out, intermediate_outs), encoder_out_lens
return encoder_out, encoder_out_lens
def encode_chunk(
@ -340,32 +281,8 @@ class Paraformer(FunASRModel):
if self.normalize is not None:
feats, feats_lengths = self.normalize(feats, feats_lengths)
# Pre-encoder, e.g. used for raw input data
if self.preencoder is not None:
feats, feats_lengths = self.preencoder(feats, feats_lengths)
# 4. Forward encoder
# feats: (Batch, Length, Dim)
# -> encoder_out: (Batch, Length2, Dim2)
if self.encoder.interctc_use_conditioning:
encoder_out, encoder_out_lens, _ = self.encoder.forward_chunk(
feats, feats_lengths, cache=cache["encoder"], ctc=self.ctc
)
else:
encoder_out, encoder_out_lens, _ = self.encoder.forward_chunk(feats, feats_lengths, cache=cache["encoder"])
intermediate_outs = None
if isinstance(encoder_out, tuple):
intermediate_outs = encoder_out[1]
encoder_out = encoder_out[0]
# Post-encoder, e.g. NLU
if self.postencoder is not None:
encoder_out, encoder_out_lens = self.postencoder(
encoder_out, encoder_out_lens
)
if intermediate_outs is not None:
return (encoder_out, intermediate_outs), encoder_out_lens
encoder_out, encoder_out_lens, _ = self.encoder.forward_chunk(feats, feats_lengths, cache=cache["encoder"])
return encoder_out, torch.tensor([encoder_out.size(1)])