R-Debater: Retrieval-Augmented Debate Generation through Argumentative Memory

📝 Original Info

• Title: R-Debater: Retrieval-Augmented Debate Generation through Argumentative Memory
• ArXiv ID: 2512.24684
• Date: 2025-12-31
• Authors: Maoyuan Li, Zhongsheng Wang, Haoyuan Li, Jiamou Liu

📝 Abstract

We present R-Debater, an agentic framework for generating multiturn debates built on argumentative memory. Grounded in rhetoric and memory studies, the system views debate as a process of recalling and adapting prior arguments to maintain stance consistency, respond to opponents, and support claims with evidence. Specifically, R-Debater integrates a debate knowledge base for retrieving caselike evidence and prior debate moves with a role-based agent that composes coherent utterances across turns. We evaluate on standardized ORCHID debates, constructing a 1,000-item retrieval corpus and a held-out set of 32 debates across seven domains. Two tasks are evaluated: next-utterance generation, assessed by InspireScore (subjective, logical, and factual), and adversarial multi-turn simulations, judged by Debatrix (argument, source, language, and overall). Compared with strong LLM baselines, R-Debater achieves higher single-turn and multi-turn scores. Human evaluation with 20 experienced debaters further confirms its consistency and evidence use, showing that combining retrieval grounding with structured planning yields more faithful, stance-aligned, and coherent debates across turns. Code and supplementary materials are available at https://anonymous.4open.science/r/R-debater-E87F/.

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