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Curiosity-driven Red-teaming for Large Language Models

2024-02-29 18:55:03
Zhang-Wei Hong, Idan Shenfeld, Tsun-Hsuan Wang, Yung-Sung Chuang, Aldo Pareja, James Glass, Akash Srivastava, Pulkit Agrawal


Large language models (LLMs) hold great potential for many natural language applications but risk generating incorrect or toxic content. To probe when an LLM generates unwanted content, the current paradigm is to recruit a \textit{red team} of human testers to design input prompts (i.e., test cases) that elicit undesirable responses from LLMs. However, relying solely on human testers is expensive and time-consuming. Recent works automate red teaming by training a separate red team LLM with reinforcement learning (RL) to generate test cases that maximize the chance of eliciting undesirable responses from the target LLM. However, current RL methods are only able to generate a small number of effective test cases resulting in a low coverage of the span of prompts that elicit undesirable responses from the target LLM. To overcome this limitation, we draw a connection between the problem of increasing the coverage of generated test cases and the well-studied approach of curiosity-driven exploration that optimizes for novelty. Our method of curiosity-driven red teaming (CRT) achieves greater coverage of test cases while mantaining or increasing their effectiveness compared to existing methods. Our method, CRT successfully provokes toxic responses from LLaMA2 model that has been heavily fine-tuned using human preferences to avoid toxic outputs. Code is available at \url{this https URL}

Abstract (translated)

大语言模型(LLMs)在许多自然语言应用领域具有巨大的潜力,但 risk 生成不正确或有害的内容。为了探测 LLM 生成不良内容的时刻,目前的范例是招募一个由人类测试者组成的 \textit{红队},设计输入提示(即测试用例),以激发 LLM 的不良反应。然而,仅依赖人类测试者是昂贵且耗时的。最近的工作通过通过强化学习(RL)训练一个单独的红队 LLM 来自动化红队,从而生成最大化从目标 LLM 产生不良反应的测试用例。然而,现有的 RL 方法只能生成少量有效的测试用例,导致对目标 LLM 产生不良反应的提示的覆盖范围较低。为了克服这一局限,我们联系到增加生成测试用例的覆盖率与著名的探索方法——好奇驱动探索之间的联系。我们的好奇驱动红队(CRT)方法在保持或提高其有效性同时,具有更广泛的测试用例覆盖范围。我们的方法 CRT 成功地将 LLaMA2 模型加重调谐以避免产生有毒输出,同时使其测试用例具有更好的覆盖范围。代码可在此处下载:\url{https://this <https://this URL>}



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