ContraCLM: Contrastive Learning For Causal Language Model
Nihal Jain, Dejiao Zhang, Wasi Uddin Ahmad, Zijian Wang, Feng Nan, Xiaopeng Li, Ming Tan, Ramesh Nallapati
Abstract
Despite exciting progress in causal language models, the expressiveness of their representations is largely limited due to poor discrimination ability. To remedy this issue, we present CONTRACLM, a novel contrastive learning framework at both the token-level and the sequence-level. We assess CONTRACLM on a variety of downstream tasks. We show that CONTRACLM enhances the discrimination of representations and bridges the gap with encoder-only models, which makes causal language models better suited for tasks beyond language generation. Specifically, we attain 44% relative improvement on the Semantic Textual Similarity tasks and 34% on Code-to-Code Search tasks. Furthermore, by improving the expressiveness of representations, CONTRACLM also boosts the source code generation capability with 9% relative improvement on execution accuracy on the HumanEval benchmark.
BibTeX
@inproceedings{jain-etal-2023-contraclm,
title = "{C}ontra{CLM}: Contrastive Learning For Causal Language Model",
author = "Jain, Nihal and
Zhang, Dejiao and
Ahmad, Wasi Uddin and
Wang, Zijian and
Nan, Feng and
Li, Xiaopeng and
Tan, Ming and
Nallapati, Ramesh and
Ray, Baishakhi and
Bhatia, Parminder and
Ma, Xiaofei and
Xiang, Bing",
editor = "Rogers, Anna and
Boyd-Graber, Jordan and
Okazaki, Naoaki",
booktitle = "Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
month = jul,
year = "2023",
address = "Toronto, Canada",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2023.acl-long.355/",
doi = "10.18653/v1/2023.acl-long.355",
pages = "6436--6459"
}