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如何使用Unsloth进行模型微调?请说明关键步骤

2025-09-10 1.9 K

使用Unsloth进行高效微调包含以下关键操作流程:

  1. Model loading:使用标准transformer接口加载预训练模型,可指定上下文窗口等参数:
    model = AutoModelForCausalLM.from_pretrained("unslothai/llama-3.3", context_window=89000)
  2. 训练配置:通过TrainingArguments设置核心参数,推荐启用动态量化:
    training_args = TrainingArguments(
    output_dir="./results",
    quantization="dynamic_4bit",
    per_device_train_batch_size=4
    )
  3. Start training:使用封装好的Trainer类启动训练过程,自动优化内存和计算资源:
    trainer = Trainer(model, args=training_args, train_dataset=dataset)
    trainer.train()
  4. Model Export:支持多种工业标准格式,如HuggingFace格式:
    model.save_pretrained("./finetuned_model")

项目提供的Jupyter notebooks包含完整的端到端示例,建议用户优先参考这些实战案例。

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