使用Prompt Tuning方法微调

**Usage**

    from peft import PeftModel, PeftConfig
  
    peft_model_id = "Laurie/bloomz-560m_PROMPT_TUNING_CAUSAL_LM"
    
    config = PeftConfig.from_pretrained(peft_model_id)
    model = AutoModelForCausalLM.from_pretrained(config.base_model_name_or_path)
    model = PeftModel.from_pretrained(model, peft_model_id)
  
    # Grab a tweet and tokenize it:
    inputs = tokenizer(
    f'{text_column} : {"@nationalgridus I have no water and the bill is current and paid. Can you do something about this?"} Label : ',
    return_tensors="pt")

    # Put the model on a GPU and generate the predicted label:
    model.to(device)

    with torch.no_grad():
        inputs = {k: v.to(device) for k, v in inputs.items()}
        outputs = model.generate(
            input_ids=inputs["input_ids"], attention_mask=inputs["attention_mask"], max_new_tokens=10, eos_token_id=3
        )
        print(tokenizer.batch_decode(outputs.detach().cpu().numpy(), skip_special_tokens=True))
    [
        "Tweet text : @nationalgridus I have no water and the bill is current and paid. Can you do something about this? Label : complaint"
    ]