Improving Conversational Abilities of Quantized Large Language Models via Direct Preference Alignment

Janghwan Lee, Seongmin Park, Sukjin Hong, Minsoo Kim, Du-Seong Chang, Jungwook Choi


Abstract
The rapid advancement of large language models (LLMs) has facilitated their transformation into conversational chatbots that can grasp contextual nuances and generate pertinent sentences, closely mirroring human values through advanced techniques such as instruction tuning and reinforcement learning from human feedback (RLHF). However, the computational efficiency required for LLMs, achieved through techniques like post-training quantization (PTQ), presents challenges such as token-flipping that can impair chatbot performance. In response, we propose a novel preference alignment approach, quantization-aware direct preference optimization (QDPO), that aligns quantized LLMs with their full-precision counterparts, improving conversational abilities. Evaluated on two instruction-tuned LLMs in various languages, QDPO demonstrated superior performance in improving conversational abilities compared to established PTQ and knowledge-distillation fine-tuning techniques, marking a significant step forward in the development of efficient and effective conversational LLMs.
Anthology ID:
2024.acl-long.612
Original:
2024.acl-long.612v1
Version 2:
2024.acl-long.612v2
Version 3:
2024.acl-long.612v3
Volume:
Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)
Month:
August
Year:
2024
Address:
Bangkok, Thailand
Editors:
Lun-Wei Ku, Andre Martins, Vivek Srikumar
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
11346–11364
Language:
URL:
https://aclanthology.org/2024.acl-long.612
DOI:
10.18653/v1/2024.acl-long.612
Bibkey:
Cite (ACL):
Janghwan Lee, Seongmin Park, Sukjin Hong, Minsoo Kim, Du-Seong Chang, and Jungwook Choi. 2024. Improving Conversational Abilities of Quantized Large Language Models via Direct Preference Alignment. In Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), pages 11346–11364, Bangkok, Thailand. Association for Computational Linguistics.
Cite (Informal):
Improving Conversational Abilities of Quantized Large Language Models via Direct Preference Alignment (Lee et al., ACL 2024)
Copy Citation:
PDF:
https://aclanthology.org/2024.acl-long.612.pdf