让AI解释更懂你:根据用户需求动态调整解释风格与内容。
PONTE: Personalized Orchestration for Natural Language Trustworthy Explanations
- 用闭环反馈机制自动适应用户偏好,而非固定提示词。
- 验证模块确保解释数值准确、内容完整、风格一致。
- 适合医疗金融等对解释可靠性要求高的场景使用。
可解释人工智能(XAI)旨在提升机器学习系统的透明度与可问责性,但现有方法多采用‘一刀切’模式,忽视用户在专业水平、目标和认知需求上的差异。尽管大语言模型能将技术解释转化为自然语言,却带来忠实度下降和幻觉问题。为此,我们提出PONTE(个性化编排的自然语言可信解释框架),一种人机协同的自适应可靠XAI叙事系统。PONTE将个性化建模为闭环验证与迭代适应过程,而非依赖提示工程。其核心包含三部分:(i) 低维偏好模型捕捉用户对表达风格的需求;(ii) 偏好条件生成器基于结构化XAI产物生成解释;(iii) 验证模块确保数值忠实性、信息完整性与风格一致性,可选地结合检索增强论证。用户反馈持续更新偏好状态,实现快速个性化。在医疗与金融领域的自动与人工评估表明,验证-优化循环显著提升了内容完整性和风格匹配度。人类实验进一步证实,用户意图偏好向量与感知风格高度一致,生成结果对随机性稳健,且普遍获得高质量评价。
原文摘要 · Abstract (English)
Explainable Artificial Intelligence (XAI) seeks to enhance the transparency and accountability of machine learning systems, yet most methods follow a one-size-fits-all paradigm that neglects user differences in expertise, goals, and cognitive needs. Although Large Language Models can translate technical explanations into natural language, they introduce challenges related to faithfulness and hallucinations. To address these challenges, we present PONTE (Personalized Orchestration for Natural language Trustworthy Explanations), a human-in-the-loop framework for adaptive and reliable XAI narratives. PONTE models personalization as a closed-loop validation and adaptation process rather than prompt engineering. It combines: (i) a low-dimensional preference model capturing stylistic requirements; (ii) a preference-conditioned generator grounded in structured XAI artifacts; and (iii) verification modules enforcing numerical faithfulness, informational completeness, and stylistic alignment, optionally supported by retrieval-grounded argumentation. User feedback iteratively updates the preference state, enabling quick personalization. Automatic and human evaluations across healthcare and finance domains show that the verification-refinement loop substantially improves completeness and stylistic alignment over validation-free generation. Human studies further confirm strong agreement between intended preference vectors and perceived style, robustness to generation stochasticity, and consistently positive quality assessments.
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