Conflict-Aware Soft Prompting for Retrieval-Augmented Generation

• URL: http://arxiv.org/abs/2508.15253v2
• Date: Fri, 26 Sep 2025 09:07:03 GMT
• Title: Conflict-Aware Soft Prompting for Retrieval-Augmented Generation
• Authors: Eunseong Choi, June Park, Hyeri Lee, Jongwuk Lee,
• Abstract summary: Retrieval-augmented generation (RAG) enhances the capabilities of large language models (LLMs) by incorporating external knowledge into their input prompts.<n>RAG often fails to resolve the conflict between incorrect external context and correct parametric knowledge, known as context-memory conflict.<n>We introduce Conflict-Aware REtrieval-Augmented Generation (CARE), consisting of a context assessor and a base LLM.<n>CARE effectively mitigates context-memory conflicts, leading to an average performance gain of 5.0% on QA and fact-checking benchmarks.
• Score: 13.671410389511498
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Retrieval-augmented generation (RAG) enhances the capabilities of large language models (LLMs) by incorporating external knowledge into their input prompts. However, when the retrieved context contradicts the LLM's parametric knowledge, it often fails to resolve the conflict between incorrect external context and correct parametric knowledge, known as context-memory conflict. To tackle this problem, we introduce Conflict-Aware REtrieval-Augmented Generation (CARE), consisting of a context assessor and a base LLM. The context assessor encodes compact memory token embeddings from raw context tokens. Through grounded/adversarial soft prompting, the context assessor is trained to discern unreliable context and capture a guidance signal that directs reasoning toward the more reliable knowledge source. Extensive experiments show that CARE effectively mitigates context-memory conflicts, leading to an average performance gain of 5.0\% on QA and fact-checking benchmarks, establishing a promising direction for trustworthy and adaptive RAG systems.

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