论文标题
谁是专家？关于多源信念变化
Who's the Expert? On Multi-source Belief Change
论文作者
论文摘要
考虑以下信念变化/合并情景。一组信息源在各种情况下（例如不同的时间点）提供了有关世界状况的一系列报告。在这些情况下，真实状态对我们来说是未知的。这些消息来源具有不同水平的专业知识，对我们来说也不知道，并且在某些主题上可能知识渊博，而不是其他主题。这可能会导致来源报告缺乏专业知识的领域的虚假陈述。根据这些报告，我们应该相信什么？我们提供了一个框架，可以根据命题逻辑扩展具有专业知识的公式来探索这个问题。这种扩展的语言使我们能够在每种情况下都表达对世界状态的信念，以及对每个来源的专业知识的信念。我们提出了几个假设，为几个混凝土操作员提供了几个家族，并根据假设分析了这些操作员。
Consider the following belief change/merging scenario. A group of information sources gives a sequence of reports about the state of the world at various instances (e.g. different points in time). The true states at these instances are unknown to us. The sources have varying levels of expertise, also unknown to us, and may be knowledgeable on some topics but not others. This may cause sources to report false statements in areas they lack expertise. What should we believe on the basis of these reports? We provide a framework in which to explore this problem, based on an extension of propositional logic with expertise formulas. This extended language allows us to express beliefs about the state of the world at each instance, as well as beliefs about the expertise of each source. We propose several postulates, provide a couple of families of concrete operators, and analyse these operators with respect to the postulates.
