GPS: Genetic Prompt Search for Efficient Few-Shot Learning
Hanwei Xu, Yujun Chen, Yulun Du, Nan Shao, Wang Yanggang, Haiyu Li, Zhilin Yang
Abstract
Prompt-based techniques have demostrated great potential for improving the few-shot generalization of pretrained language models. However, their performance heavily relies on the manual design of prompts and thus requiring a lot of human efforts. In this paper, we introduce Genetic Prompt Search (GPS) to improve few-shot learning with prompts, which utilizes a genetic algorithm to automatically search for the best prompt.GPS is gradient-free and requires no update of model parameters but only a small validation set. Experiments on diverse datasets proved the effectiveness of GPS, which outperforms manual prompts by a large margin of 2.6 points. Our method is also better than other parameter-efficient tuning methods such as prompt tuning.
BibTeX
@inproceedings{xu-etal-2022-gps,
title = "{GPS}: Genetic Prompt Search for Efficient Few-Shot Learning",
author = "Xu, Hanwei and
Chen, Yujun and
Du, Yulun and
Shao, Nan and
Yanggang, Wang and
Li, Haiyu and
Yang, Zhilin",
editor = "Goldberg, Yoav and
Kozareva, Zornitsa and
Zhang, Yue",
booktitle = "Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing",
month = dec,
year = "2022",
address = "Abu Dhabi, United Arab Emirates",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2022.emnlp-main.559/",
doi = "10.18653/v1/2022.emnlp-main.559",
pages = "8162--8171"
}