funasr1.0

游雁

2024-01-05 32905d8cdedd53dad26680b0bd41397aaf0e51ae

 funasr/models/ct_transformer/model.py

@@ -1,13 +1,20 @@
from typing import Any
from typing import List
from typing import Tuple
from typing import Optional
import numpy as np
import torch.nn.functional as F

from funasr.models.transformer.utils.nets_utils import make_pad_mask
from funasr.train_utils.device_funcs import force_gatherable
from funasr.train_utils.device_funcs import to_device
import torch
import torch.nn as nn
from funasr.models.ct_transformer.utils import split_to_mini_sentence, split_words

from funasr.utils.register import register_class, registry_tables
from funasr.register import tables

@register_class("model_classes", "CTTransformer")
@tables.register("model_classes", "CTTransformer")
class CTTransformer(nn.Module):
    """
    Author: Speech Lab of DAMO Academy, Alibaba Group
@@ -17,7 +24,7 @@
    def __init__(
        self,
        encoder: str = None,
        encoder_conf: str = None,
        encoder_conf: dict = None,
        vocab_size: int = -1,
        punc_list: list = None,
        punc_weight: list = None,
@@ -27,6 +34,7 @@
        ignore_id: int = -1,
        sos: int = 1,
        eos: int = 2,
        sentence_end_id: int = 3,
        **kwargs,
    ):
        super().__init__()
@@ -37,7 +45,7 @@
        
        
        self.embed = nn.Embedding(vocab_size, embed_unit)
        encoder_class = registry_tables.encoder_classes.get(encoder.lower())
        encoder_class = tables.encoder_classes.get(encoder.lower())
        encoder = encoder_class(**encoder_conf)

        self.decoder = nn.Linear(att_unit, punc_size)
@@ -47,10 +55,11 @@
        self.ignore_id = ignore_id
        self.sos = sos
        self.eos = eos
        self.sentence_end_id = sentence_end_id
        
        

    def punc_forward(self, input: torch.Tensor, text_lengths: torch.Tensor) -> Tuple[torch.Tensor, None]:
    def punc_forward(self, text: torch.Tensor, text_lengths: torch.Tensor) -> Tuple[torch.Tensor, None]:
        """Compute loss value from buffer sequences.

        Args:
@@ -58,7 +67,7 @@
            hidden (torch.Tensor): Target ids. (batch, len)

        """
        x = self.embed(input)
        x = self.embed(text)
        # mask = self._target_mask(input)
        h, _, _ = self.encoder(x, text_lengths)
        y = self.decoder(h)
@@ -191,7 +200,7 @@
        punc_lengths: torch.Tensor,
        vad_indexes: Optional[torch.Tensor] = None,
        vad_indexes_lengths: Optional[torch.Tensor] = None,
    ) -> Tuple[torch.Tensor, Dict[str, torch.Tensor], torch.Tensor]:
    ):
        nll, y_lengths = self.nll(text, punc, text_lengths, punc_lengths, vad_indexes=vad_indexes)
        ntokens = y_lengths.sum()
        loss = nll.sum() / ntokens
@@ -202,11 +211,117 @@
        return loss, stats, weight
    
    def generate(self,
                  text: torch.Tensor,
                  text_lengths: torch.Tensor,
                  vad_indexes: Optional[torch.Tensor] = None) -> Tuple[torch.Tensor, None]:
        if self.with_vad():
            assert vad_indexes is not None
            return self.punc_forward(text, text_lengths, vad_indexes)
        else:
            return self.punc_forward(text, text_lengths)
                 data_in,
                 data_lengths=None,
                 key: list = None,
                 tokenizer=None,
                 frontend=None,
                 **kwargs,
                 ):
        assert len(data_in) == 1
        
        vad_indexes = kwargs.get("vad_indexes", None)
        text = data_in[0]
        text_lengths = data_lengths[0] if data_lengths is not None else None
        split_size = kwargs.get("split_size", 20)
        
        tokens = split_words(text)
        tokens_int = tokenizer.encode(tokens)

        mini_sentences = split_to_mini_sentence(tokens, split_size)
        mini_sentences_id = split_to_mini_sentence(tokens_int, split_size)
        assert len(mini_sentences) == len(mini_sentences_id)
        cache_sent = []
        cache_sent_id = torch.from_numpy(np.array([], dtype='int32'))
        new_mini_sentence = ""
        new_mini_sentence_punc = []
        cache_pop_trigger_limit = 200
        results = []
        meta_data = {}
        for mini_sentence_i in range(len(mini_sentences)):
            mini_sentence = mini_sentences[mini_sentence_i]
            mini_sentence_id = mini_sentences_id[mini_sentence_i]
            mini_sentence = cache_sent + mini_sentence
            mini_sentence_id = np.concatenate((cache_sent_id, mini_sentence_id), axis=0)
            data = {
                "text": torch.unsqueeze(torch.from_numpy(mini_sentence_id), 0),
                "text_lengths": torch.from_numpy(np.array([len(mini_sentence_id)], dtype='int32')),
            }
            data = to_device(data, kwargs["device"])
            # y, _ = self.wrapped_model(**data)
            y, _ = self.punc_forward(**data)
            _, indices = y.view(-1, y.shape[-1]).topk(1, dim=1)
            punctuations = indices
            if indices.size()[0] != 1:
                punctuations = torch.squeeze(indices)
            assert punctuations.size()[0] == len(mini_sentence)

            # Search for the last Period/QuestionMark as cache
            if mini_sentence_i < len(mini_sentences) - 1:
                sentenceEnd = -1
                last_comma_index = -1
                for i in range(len(punctuations) - 2, 1, -1):
                    if self.punc_list[punctuations[i]] == "。" or self.punc_list[punctuations[i]] == "？":
                        sentenceEnd = i
                        break
                    if last_comma_index < 0 and self.punc_list[punctuations[i]] == "，":
                        last_comma_index = i

                if sentenceEnd < 0 and len(mini_sentence) > cache_pop_trigger_limit and last_comma_index >= 0:
                    # The sentence it too long, cut off at a comma.
                    sentenceEnd = last_comma_index
                    punctuations[sentenceEnd] = self.sentence_end_id
                cache_sent = mini_sentence[sentenceEnd + 1:]
                cache_sent_id = mini_sentence_id[sentenceEnd + 1:]
                mini_sentence = mini_sentence[0:sentenceEnd + 1]
                punctuations = punctuations[0:sentenceEnd + 1]

            # if len(punctuations) == 0:
            #    continue

            punctuations_np = punctuations.cpu().numpy()
            new_mini_sentence_punc += [int(x) for x in punctuations_np]
            words_with_punc = []
            for i in range(len(mini_sentence)):
                if (i==0 or self.punc_list[punctuations[i-1]] == "。" or self.punc_list[punctuations[i-1]] == "？") and len(mini_sentence[i][0].encode()) == 1:
                    mini_sentence[i] = mini_sentence[i].capitalize()
                if i == 0:
                    if len(mini_sentence[i][0].encode()) == 1:
                        mini_sentence[i] = " " + mini_sentence[i]
                if i > 0:
                    if len(mini_sentence[i][0].encode()) == 1 and len(mini_sentence[i - 1][0].encode()) == 1:
                        mini_sentence[i] = " " + mini_sentence[i]
                words_with_punc.append(mini_sentence[i])
                if self.punc_list[punctuations[i]] != "_":
                    punc_res = self.punc_list[punctuations[i]]
                    if len(mini_sentence[i][0].encode()) == 1:
                        if punc_res == "，":
                            punc_res = ","
                        elif punc_res == "。":
                            punc_res = "."
                        elif punc_res == "？":
                            punc_res = "?"
                    words_with_punc.append(punc_res)
            new_mini_sentence += "".join(words_with_punc)
            # Add Period for the end of the sentence
            new_mini_sentence_out = new_mini_sentence
            new_mini_sentence_punc_out = new_mini_sentence_punc
            if mini_sentence_i == len(mini_sentences) - 1:
                if new_mini_sentence[-1] == "，" or new_mini_sentence[-1] == "、":
                    new_mini_sentence_out = new_mini_sentence[:-1] + "。"
                    new_mini_sentence_punc_out = new_mini_sentence_punc[:-1] + [self.sentence_end_id]
                elif new_mini_sentence[-1] == ",":
                    new_mini_sentence_out = new_mini_sentence[:-1] + "."
                    new_mini_sentence_punc_out = new_mini_sentence_punc[:-1] + [self.sentence_end_id]
                elif new_mini_sentence[-1] != "。" and new_mini_sentence[-1] != "？" and len(new_mini_sentence[-1].encode())==0:
                    new_mini_sentence_out = new_mini_sentence + "。"
                    new_mini_sentence_punc_out = new_mini_sentence_punc[:-1] + [self.sentence_end_id]
                elif new_mini_sentence[-1] != "." and new_mini_sentence[-1] != "?" and len(new_mini_sentence[-1].encode())==1:
                    new_mini_sentence_out = new_mini_sentence + "."
                    new_mini_sentence_punc_out = new_mini_sentence_punc[:-1] + [self.sentence_end_id]

        result_i = {"key": key[0], "text": new_mini_sentence_out}
        results.append(result_i)
    
        return results, meta_data