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Update decoding.py #1155

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merged 5 commits into from
Apr 11, 2023
Merged

Update decoding.py #1155

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fc181e9
Update decoding.py
FernanOrtega Mar 27, 2023
42a8d6f
Merge branch 'openai:main' into main
FernanOrtega Mar 30, 2023
2cd1fc8
Removed blank line and whitespaces in empty lines.
FernanOrtega Mar 30, 2023
a5c80e6
Suggested changes according to the linter
FernanOrtega Apr 11, 2023
e2e65db
Merge branch 'main' into main
jongwook Apr 11, 2023
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7 changes: 7 additions & 0 deletions whisper/decoding.py
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Original file line number Diff line number Diff line change
Expand Up @@ -471,6 +471,13 @@ def apply(self, logits: Tensor, tokens: Tensor):
# timestamps shouldn't decrease; forbid timestamp tokens smaller than the last
logits[k, self.tokenizer.timestamp_begin : timestamps[-1]] = -np.inf
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Forgot to mention that this line is no longer needed but I'll fix it in a subsequent PR


# to force that timestamps are strictly increasing
if last_was_timestamp and not penultimate_was_timestamp:
timestamp_last = timestamps[-1]
else:
timestamp_last = timestamps[-1] + 1
logits[k, self.tokenizer.timestamp_begin : timestamp_last] = -np.inf

if tokens.shape[1] == self.sample_begin:
# suppress generating non-timestamp tokens at the beginning
logits[:, : self.tokenizer.timestamp_begin] = -np.inf
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