论文标题
STT:少量适应的软模板调整
STT: Soft Template Tuning for Few-Shot Adaptation
论文作者
论文摘要
及时调整是将预训练模型调整到下游任务的极其有效的工具。但是,基于标准的及时方法主要考虑下游任务的足够数据的情况。目前尚不清楚是否可以将优势传输到几杆式制度,在每个下游任务中只有有限的数据。尽管有些作品证明了在几次弹奏设置下进行及时调整的潜力,但通过搜索离散提示或使用有限数据调整软提示的主流方法仍然非常具有挑战性。通过广泛的实证研究,我们发现迅速调整和完全微调之间的学习差距仍然存在差距。为了弥合差距,我们提出了一个新的及时调整框架,称为软模板调整(STT)。 STT结合了手册和自动提示,并将下游分类任务视为掩盖语言建模任务。对不同设置的全面评估表明,STT可以在不引入其他参数的情况下缩小微调和基于及时的方法之间的差距。值得注意的是,它甚至可以胜过情感分类任务的时间和资源消费的微调方法。
Prompt tuning has been an extremely effective tool to adapt a pre-trained model to downstream tasks. However, standard prompt-based methods mainly consider the case of sufficient data of downstream tasks. It is still unclear whether the advantage can be transferred to the few-shot regime, where only limited data are available for each downstream task. Although some works have demonstrated the potential of prompt-tuning under the few-shot setting, the main stream methods via searching discrete prompts or tuning soft prompts with limited data are still very challenging. Through extensive empirical studies, we find that there is still a gap between prompt tuning and fully fine-tuning for few-shot learning. To bridge the gap, we propose a new prompt-tuning framework, called Soft Template Tuning (STT). STT combines manual and auto prompts, and treats downstream classification tasks as a masked language modeling task. Comprehensive evaluation on different settings suggests STT can close the gap between fine-tuning and prompt-based methods without introducing additional parameters. Significantly, it can even outperform the time- and resource-consuming fine-tuning method on sentiment classification tasks.