Optimize tokenizer initialization in LazySupervisedDataset for QWEN a… #288
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Removed
tokenizer = copy.deepcopy(tokenizer)frompreprocess_llama3andpreprocess_qwenbecause this operation was called every time data is fetched from the dataloader, consuming extra time. Instead, whether to usecopy.deepcopyduring tokenizer initialization is now determined based onconversation_lib.default_conversation.versionduring the initialization of theLazySupervisedDatasetclass.