Closed seal-wang closed 2 months ago
This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your consideration.
Closing the issue, since no updates observed. Feel free to re-open if you need any further assistance.
提交前必须检查以下项目
问题类型
模型训练与精调
基础模型
None
操作系统
Linux
详细描述问题
在这里 https://github.com/ymcui/Chinese-LLaMA-Alpaca-3/blob/f8df26ea288ad9675ee99a369cd49aee37c817bd/scripts/training/build_dataset.py#L32 会添加一个结束符,但是如果prompt长度大于max_seq_length时,会在这里 https://github.com/ymcui/Chinese-LLaMA-Alpaca-3/blob/f8df26ea288ad9675ee99a369cd49aee37c817bd/scripts/training/build_dataset.py#L44 将结束符丢弃掉。 这个丢失操作会使模型在微调阶段无法学到合适的结束符,反应到生成阶段会导致模型生成无法停止。 Chinese-LLaMA-Alpaca-1和Chinese-LLaMA-Alpaca-2也存在这样的问题,之所以最终模型生成时没问题,可能是因为max_seq_length比较大,可以满足大部分微调样本的长度需要。 不知道您有没有发现这个问题?还是我理解有错误?