Bayesian networks and causal models provide frameworks for handling queries about external interventions and counterfactuals, enabling tasks that go beyond what probability distributions alone can address. While these formalisms are often informally described as capturing causal knowledge, there is a lack of a formal theory characterizing the type of knowledge required to predict the effects of external interventions. This work introduces the theoretical framework of causal systems to clarify Aristotle's distinction between knowledge that and knowledge why within artificial intelligence. By interpreting existing artificial intelligence technologies as causal systems, it investigates the corresponding types of knowledge. Furthermore, it argues that predicting the effects of external interventions is feasible only with knowledge why, providing a more precise understanding of the knowledge necessary for such tasks.
翻译:贝叶斯网络与因果模型为处理外部干预与反事实查询提供了框架,使其能够完成仅凭概率分布无法实现的任务。尽管这些形式化方法常被非正式地描述为捕捉因果知识,但当前仍缺乏一种正式理论来刻画预测外部干预效果所需的知识类型。本研究引入因果系统的理论框架,以阐明亚里士多德关于人工智能中“知识是什么”与“知识为何”的区分。通过将现有人工智能技术解释为因果系统,本文探讨了相应的知识类型。进一步论证了仅凭“知识为何”才能预测外部干预的效果,从而为理解此类任务所需的知识提供了更精确的阐释。