mirror of
https://github.com/modelscope/FunASR
synced 2025-09-15 14:48:36 +08:00
zhifu gao
GitHub
commit
6f18b5619a
@ -1,6 +1,10 @@
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import torch
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import copy
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import codecs
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import logging
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import edit_distance
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import argparse
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import pdb
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import numpy as np
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from typing import Any, List, Tuple, Union
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@ -9,7 +13,8 @@ def ts_prediction_lfr6_standard(us_alphas,
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us_peaks,
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char_list,
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vad_offset=0.0,
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force_time_shift=-1.5
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force_time_shift=-1.5,
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sil_in_str=True
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):
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if not len(char_list):
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return []
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@ -62,6 +67,8 @@ def ts_prediction_lfr6_standard(us_alphas,
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timestamp_list[i][1] = timestamp_list[i][1] + vad_offset / 1000.0
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res_txt = ""
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for char, timestamp in zip(new_char_list, timestamp_list):
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#if char != '<sil>':
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if not sil_in_str and char == '<sil>': continue
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res_txt += "{} {} {};".format(char, str(timestamp[0]+0.0005)[:5], str(timestamp[1]+0.0005)[:5])
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res = []
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for char, timestamp in zip(new_char_list, timestamp_list):
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@ -121,4 +128,181 @@ def time_stamp_sentence(punc_id_list, time_stamp_postprocessed, text_postprocess
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return res
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class AverageShiftCalculator():
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def __init__(self):
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logging.warning("Calculating average shift.")
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def __call__(self, file1, file2):
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uttid_list1, ts_dict1 = self.read_timestamps(file1)
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uttid_list2, ts_dict2 = self.read_timestamps(file2)
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uttid_intersection = self._intersection(uttid_list1, uttid_list2)
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res = self.as_cal(uttid_intersection, ts_dict1, ts_dict2)
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logging.warning("Average shift of {} and {}: {}.".format(file1, file2, str(res)[:8]))
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logging.warning("Following timestamp pair differs most: {}, detail:{}".format(self.max_shift, self.max_shift_uttid))
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def _intersection(self, list1, list2):
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set1 = set(list1)
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set2 = set(list2)
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if set1 == set2:
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logging.warning("Uttid same checked.")
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return set1
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itsc = list(set1 & set2)
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logging.warning("Uttid differs: file1 {}, file2 {}, lines same {}.".format(len(list1), len(list2), len(itsc)))
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return itsc
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def read_timestamps(self, file):
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# read timestamps file in standard format
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uttid_list = []
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ts_dict = {}
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with codecs.open(file, 'r') as fin:
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for line in fin.readlines():
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text = ''
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ts_list = []
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line = line.rstrip()
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uttid = line.split()[0]
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uttid_list.append(uttid)
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body = " ".join(line.split()[1:])
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for pd in body.split(';'):
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if not len(pd): continue
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# pdb.set_trace()
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char, start, end = pd.lstrip(" ").split(' ')
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text += char + ','
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ts_list.append((float(start), float(end)))
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# ts_lists.append(ts_list)
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ts_dict[uttid] = (text[:-1], ts_list)
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logging.warning("File {} read done.".format(file))
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return uttid_list, ts_dict
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def _shift(self, filtered_timestamp_list1, filtered_timestamp_list2):
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shift_time = 0
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for fts1, fts2 in zip(filtered_timestamp_list1, filtered_timestamp_list2):
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shift_time += abs(fts1[0] - fts2[0]) + abs(fts1[1] - fts2[1])
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num_tokens = len(filtered_timestamp_list1)
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return shift_time, num_tokens
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def as_cal(self, uttid_list, ts_dict1, ts_dict2):
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# calculate average shift between timestamp1 and timestamp2
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# when characters differ, use edit distance alignment
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# and calculate the error between the same characters
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self._accumlated_shift = 0
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self._accumlated_tokens = 0
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self.max_shift = 0
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self.max_shift_uttid = None
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for uttid in uttid_list:
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(t1, ts1) = ts_dict1[uttid]
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(t2, ts2) = ts_dict2[uttid]
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_align, _align2, _align3 = [], [], []
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fts1, fts2 = [], []
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_t1, _t2 = [], []
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sm = edit_distance.SequenceMatcher(t1.split(','), t2.split(','))
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s = sm.get_opcodes()
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for j in range(len(s)):
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if s[j][0] == "replace" or s[j][0] == "insert":
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_align.append(0)
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if s[j][0] == "replace" or s[j][0] == "delete":
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_align3.append(0)
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elif s[j][0] == "equal":
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_align.append(1)
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_align3.append(1)
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else:
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continue
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# use s to index t2
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for a, ts , t in zip(_align, ts2, t2.split(',')):
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if a:
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fts2.append(ts)
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_t2.append(t)
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sm2 = edit_distance.SequenceMatcher(t2.split(','), t1.split(','))
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s = sm2.get_opcodes()
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for j in range(len(s)):
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if s[j][0] == "replace" or s[j][0] == "insert":
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_align2.append(0)
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elif s[j][0] == "equal":
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_align2.append(1)
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else:
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continue
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# use s2 tp index t1
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for a, ts, t in zip(_align3, ts1, t1.split(',')):
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if a:
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fts1.append(ts)
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_t1.append(t)
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if len(fts1) == len(fts2):
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shift_time, num_tokens = self._shift(fts1, fts2)
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self._accumlated_shift += shift_time
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self._accumlated_tokens += num_tokens
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if shift_time/num_tokens > self.max_shift:
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self.max_shift = shift_time/num_tokens
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self.max_shift_uttid = uttid
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else:
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logging.warning("length mismatch")
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return self._accumlated_shift / self._accumlated_tokens
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def convert_external_alphas(alphas_file, text_file, output_file):
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from funasr.models.predictor.cif import cif_wo_hidden
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with open(alphas_file, 'r') as f1, open(text_file, 'r') as f2, open(output_file, 'w') as f3:
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for line1, line2 in zip(f1.readlines(), f2.readlines()):
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line1 = line1.rstrip()
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line2 = line2.rstrip()
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assert line1.split()[0] == line2.split()[0]
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uttid = line1.split()[0]
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alphas = [float(i) for i in line1.split()[1:]]
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new_alphas = np.array(remove_chunk_padding(alphas))
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new_alphas[-1] += 1e-4
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text = line2.split()[1:]
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if len(text) + 1 != int(new_alphas.sum()):
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# force resize
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new_alphas *= (len(text) + 1) / int(new_alphas.sum())
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peaks = cif_wo_hidden(torch.Tensor(new_alphas).unsqueeze(0), 1.0-1e-4)
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if " " in text:
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text = text.split()
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else:
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text = [i for i in text]
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res_str, _ = ts_prediction_lfr6_standard(new_alphas, peaks[0], text,
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force_time_shift=-7.0,
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sil_in_str=False)
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f3.write("{} {}\n".format(uttid, res_str))
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def remove_chunk_padding(alphas):
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# remove the padding part in alphas if using chunk paraformer for GPU
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START_ZERO = 45
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MID_ZERO = 75
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REAL_FRAMES = 360 # for chunk based encoder 10-120-10 and fsmn padding 5
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alphas = alphas[START_ZERO:] # remove the padding at beginning
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new_alphas = []
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while True:
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new_alphas = new_alphas + alphas[:REAL_FRAMES]
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alphas = alphas[REAL_FRAMES+MID_ZERO:]
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if len(alphas) < REAL_FRAMES: break
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return new_alphas
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SUPPORTED_MODES = ['cal_aas', 'read_ext_alphas']
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def main(args):
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if args.mode == 'cal_aas':
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asc = AverageShiftCalculator()
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asc(args.input, args.input2)
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elif args.mode == 'read_ext_alphas':
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convert_external_alphas(args.input, args.input2, args.output)
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else:
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logging.error("Mode {} not in SUPPORTED_MODES: {}.".format(args.mode, SUPPORTED_MODES))
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='timestamp tools')
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parser.add_argument('--mode',
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default=None,
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type=str,
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choices=SUPPORTED_MODES,
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help='timestamp related toolbox')
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parser.add_argument('--input', default=None, type=str, help='input file path')
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parser.add_argument('--output', default=None, type=str, help='output file name')
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parser.add_argument('--input2', default=None, type=str, help='input2 file path')
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parser.add_argument('--kaldi-ts-type',
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default='v2',
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type=str,
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choices=['v0', 'v1', 'v2'],
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help='kaldi timestamp to write')
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args = parser.parse_args()
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main(args)
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