Enhancing Retrieval Augmentation via Adversarial Collaboration

Letian Zhang; Guanghao Meng; Xudong Ren; Yiming Wang; Shu-Tao Xia

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arXiv · 2509.14750

Enhancing Retrieval Augmentation via Adversarial Collaboration

Letian Zhang·Guanghao Meng·Xudong Ren·Yiming Wang·Shu-Tao Xia

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Abstract

Retrieval-augmented Generation (RAG) is a prevalent approach for domain-specific LLMs, yet it is often plagued by "Retrieval Hallucinations"--a phenomenon where fine-tuned models fail to recognize and act upon poor-quality retrieved documents, thus undermining performance. To address this, we propose the Adversarial Collaboration RAG (AC-RAG) framework. AC-RAG employs two heterogeneous agents: a generalist Detector that identifies knowledge gaps, and a domain-specialized Resolver that provides precise solutions. Guided by a moderator, these agents engage in an adversarial collaboration, where the Detector's persistent questioning challenges the Resolver's expertise. This dynamic process allows for iterative problem dissection and refined knowledge retrieval. Extensive experiments show that AC-RAG significantly improves retrieval accuracy and outperforms state-of-the-art RAG methods across various vertical domains.

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BibTeX RIS

Letian Zhang, Guanghao Meng, Xudong Ren, Yiming Wang, Shu-Tao Xia. 2025-09-18. Enhancing Retrieval Augmentation via Adversarial Collaboration. https://arxiv.org/abs/2509.14750

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