Add Qwen support #850
Add Qwen support #850
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chenht2026
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carmocca and
lantiga
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Thank you @chenht2026, sorry for the wait. A few of us took a break :-) |
| @@ -27,6 +27,8 @@ class Config: | |||
| rotary_percentage: float = 0.25 | |||
| parallel_residual: bool = True | |||
| bias: bool = True | |||
| # just for Qwen | |||
| is_Qwen: Optional[bool] = None | |||
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I think we should avoid this in favor of something that characterizes Qwen, like having bias only in c_attn.
For the time being we could rename this as attn_bias, and then in the future turn bias into a Option[bool, List[str]] if there's a need for it.
| # Copyright (c) Alibaba Cloud. | ||
| # | ||
| # This source code is licensed under the license found in the | ||
| # LICENSE file in the root directory of this source tree. |
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If you didn't write the code from this file (which I assume you were not since you did add this license), you should link it to the original source. Is the original from PaddlePaddle? https://github.com/PaddlePaddle/PaddleNLP/blob/develop/paddlenlp/transformers/qwen/tokenizer.py
I would advice that you create a version that only implements that few methods required by tokenizer.py
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I just copy it from their huggingface repo. tokenization_qwen.py
| from typing import Collection, Dict, List, Set, Tuple, Union | ||
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| import tiktoken | ||
| from transformers import PreTrainedTokenizer, AddedToken |
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This project doesn't have transformers as a dependency, so this import is not possible
| @@ -91,6 +95,8 @@ def encode( | |||
| tokens = self.processor.encode(string).ids | |||
| elif self.backend == "sentencepiece": | |||
| tokens = self.processor.encode(string) | |||
| elif self.backend == "tiktoken": | |||
| tokens = self.processor.encode(string) | |||
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It doesn't seem like the new processor implements this method. Also, what about decoding?
tutorials/download_Qwen.md
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It would be good mention qwen's recommended languages.
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Chinese and English. I'll add it.
Would it work with Qwen 2 (Qwen/Qwen1.5-7B-Chat)? if not what needs to be added? |
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Hey just pinging to see if you are still interested in pursuing this PR. Personally, I think it'd be awesome to support the Qwen models (1.5 and especially 2) in LitGPT. There have been some improvements in the tokenizer in LitGPT recently that could now make this more easily possible. Btw if rebasing here based on the main branch (which changed a lot) is too messy, you could also just open a fresh PR. |
It works.
Qwen's tokenizer is based on tiktoken, I add the tokenizer(tokenization_qwen.py) from its huggingface repo without any revision. This make the code a little complicate, so maybe do not merge.
May be some one needs it.
Closes #840