sammy786 commited on
Commit
d398398
1 Parent(s): 7dd5ebd

Upload eval.py

Browse files
Files changed (1) hide show
  1. eval.py +126 -0
eval.py ADDED
@@ -0,0 +1,126 @@
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
+ from datasets import load_dataset, load_metric, Audio, Dataset
2
+ from transformers import pipeline, AutoFeatureExtractor
3
+ import re
4
+ import argparse
5
+ import unicodedata
6
+ from typing import Dict
7
+
8
+
9
+ def log_results(result: Dataset, args: Dict[str, str]):
10
+ """ DO NOT CHANGE. This function computes and logs the result metrics. """
11
+
12
+ log_outputs = args.log_outputs
13
+ dataset_id = "_".join(args.dataset.split("/") + [args.config, args.split])
14
+
15
+ # load metric
16
+ wer = load_metric("wer")
17
+ cer = load_metric("cer")
18
+
19
+ pred_string = [element.lower() for element in result["prediction"]]
20
+ actual = [element.lower() for element in result["target"]]
21
+
22
+ # compute metrics
23
+ wer_result = wer.compute(references=actual, predictions=pred_string)
24
+ cer_result = cer.compute(references=actual, predictions=pred_string)
25
+
26
+ # print & log results
27
+ result_str = (
28
+ f"WER: {wer_result}\n"
29
+ f"CER: {cer_result}"
30
+ )
31
+ print(result_str)
32
+
33
+ with open(f"{dataset_id}_eval_results.txt", "w") as f:
34
+ f.write(result_str)
35
+
36
+ # log all results in text file. Possibly interesting for analysis
37
+ if log_outputs is not None:
38
+ pred_file = f"log_{dataset_id}_predictions.txt"
39
+ target_file = f"log_{dataset_id}_targets.txt"
40
+
41
+ with open(pred_file, "w") as p, open(target_file, "w") as t:
42
+
43
+ # mapping function to write output
44
+ def write_to_file(batch, i):
45
+ p.write(f"{i}" + "\n")
46
+ p.write(batch["prediction"] + "\n")
47
+ t.write(f"{i}" + "\n")
48
+ t.write(batch["target"] + "\n")
49
+
50
+ result.map(write_to_file, with_indices=True)
51
+
52
+
53
+ def normalize_text(text: str) -> str:
54
+ """ DO ADAPT FOR YOUR USE CASE. this function normalizes the target text. """
55
+
56
+ chars_to_ignore_regex = '[\,\?\.\!\-\;\:\"\“\%\‘\”\�\'\...\…\–\é\»\«\—]'
57
+
58
+ text = re.sub(r'[ʻʽʼ‘’´`]', r"'", text)
59
+ text = re.sub(chars_to_ignore_regex, "", text).lower().strip()
60
+ text = re.sub(r"([b-df-hj-np-tv-z])' ([aeiou])", r"\1'\2", text)
61
+ text = re.sub(r"(-| '|' | +)", " ", text)
62
+
63
+ return text
64
+
65
+
66
+ def main(args):
67
+ # load dataset
68
+ dataset = load_dataset(args.dataset, args.config, split=args.split, use_auth_token=True)
69
+
70
+ # for testing: only process the first two examples as a test
71
+ # dataset = dataset.select(range(10))
72
+
73
+ # load processor
74
+ feature_extractor = AutoFeatureExtractor.from_pretrained(args.model_id)
75
+ sampling_rate = feature_extractor.sampling_rate
76
+
77
+ # resample audio
78
+ dataset = dataset.cast_column("audio", Audio(sampling_rate=16_000))
79
+
80
+ # load eval pipeline
81
+ asr = pipeline("automatic-speech-recognition", model=args.model_id)
82
+
83
+ # map function to decode audio
84
+ def map_to_pred(batch):
85
+ prediction = asr(batch["audio"]["array"], chunk_length_s=args.chunk_length_s, stride_length_s=args.stride_length_s)
86
+
87
+ batch["prediction"] = prediction["text"]
88
+ batch["target"] = normalize_text(batch["sentence"])
89
+ return batch
90
+
91
+ # run inference on all examples
92
+ result = dataset.map(map_to_pred, remove_columns=dataset.column_names)
93
+
94
+ # compute and log_results
95
+ # do not change function below
96
+ log_results(result, args)
97
+
98
+
99
+ if __name__ == "__main__":
100
+ parser = argparse.ArgumentParser()
101
+
102
+ parser.add_argument(
103
+ "--model_id", type=str, required=True, help="Model identifier. Should be loadable with 🤗 Transformers"
104
+ )
105
+ parser.add_argument(
106
+ "--dataset", type=str, required=True, help="Dataset name to evaluate the `model_id`. Should be loadable with 🤗 Datasets"
107
+ )
108
+ parser.add_argument(
109
+ "--config", type=str, required=True, help="Config of the dataset. *E.g.* `'en'` for Common Voice"
110
+ )
111
+ parser.add_argument(
112
+ "--split", type=str, required=True, help="Split of the dataset. *E.g.* `'test'`"
113
+ )
114
+ parser.add_argument(
115
+ "--chunk_length_s", type=float, default=None, help="Chunk length in seconds. Defaults to None. For long audio files a good value would be 5.0 seconds."
116
+ )
117
+ parser.add_argument(
118
+ "--stride_length_s", type=float, default=None, help="Stride of the audio chunks. Defaults to None. For long audio files a good value would be 1.0 seconds."
119
+ )
120
+ parser.add_argument(
121
+ "--log_outputs", action='store_true', help="If defined, write outputs to log file for analysis."
122
+ )
123
+ args = parser.parse_args()
124
+
125
+ main(args)
126
+