Efficient In-Domain Question Answering for Resource-Constrained Environments

• URL: http://arxiv.org/abs/2409.17648v3
• Date: Thu, 17 Oct 2024 14:41:39 GMT
• Title: Efficient In-Domain Question Answering for Resource-Constrained Environments
• Authors: Isaac Chung, Phat Vo, Arman C. Kizilkale, Aaron Reite,
• Abstract summary: Retrieval Augmented Generation (RAG) is a method for integrating external knowledge into pretrained Large Language Models (LLMs) Recent studies have shown success in using fine tuning to address these problems. In this work, we combine RAFT with LoRA to reduce fine tuning and storage requirements and gain faster inference times.
• Score: 0.07499722271664146
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Retrieval Augmented Generation (RAG) is a common method for integrating external knowledge into pretrained Large Language Models (LLMs) to enhance accuracy and relevancy in question answering (QA) tasks. However, prompt engineering and resource efficiency remain significant bottlenecks in developing optimal and robust RAG solutions for real-world QA applications. Recent studies have shown success in using fine tuning to address these problems; in particular, Retrieval Augmented Fine Tuning (RAFT) applied to smaller 7B models has demonstrated superior performance compared to RAG setups with much larger models such as GPT-3.5. The combination of RAFT with parameter-efficient fine tuning (PEFT) techniques, such as Low-Rank Adaptation (LoRA), promises an even more efficient solution, yet remains an unexplored area. In this work, we combine RAFT with LoRA to reduce fine tuning and storage requirements and gain faster inference times while maintaining comparable RAG performance. This results in a more compute-efficient RAFT, or CRAFT, which is particularly useful for knowledge-intensive QA tasks in resource-constrained environments where internet access may be restricted and hardware resources limited.

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