Add bytelevel normalizer to fix decode when adding tokens to BPE #1555
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ArthurZucker
commented
Jun 28, 2024
tokenizers/src/tokenizer/mod.rs
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| let tokens = ids | ||
| .iter() | ||
| .filter_map(|id| { | ||
| self.added_vocabulary | ||
| .id_to_token(*id, &self.model) | ||
| .filter(|token| { | ||
| !skip_special_tokens || !self.added_vocabulary.is_special_token(token) | ||
| }) | ||
| }) | ||
| .collect::<Vec<_>>(); | ||
|
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| if let Some(decoder) = &self.decoder { | ||
| decoder.decode(tokens) |
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reverted to what we originally had
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The test passes locally ! |
McPatate
reviewed
Jul 11, 2024
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| /// Strip the normalized string inplace | ||
| fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> { |
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Why doesn't this live in NormalizedString like so:
impl NormalizedString {
fn normalize_byte_level(&mut self) -> Result<()> { // ... }
}?
Feels a bit weird to have an empty stateless struct for just a function, but may be due to the structure of tokenizers / python.
add it fix
Co-authored-by: Luc Georges <McPatate@users.noreply.github.com>
ArthurZucker
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This revert the previous breaking change.
Also add a new
ByteLevelnormalizer, which replaces the ByteLevel pre_tokenizer.Checked that we can add chines / Cyrillic tokens which are properly encoded and decoder.
Fixes #1392