arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1106.0776cs.AIcs.LOcs.PL
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可能性析取程序的语义

Semantics for Possibilistic Disjunctive Programs

Universitat Politècnica de Catalunya(加泰罗尼亚理工大学);Universidad de las Américas - Puebla(普埃布拉美洲大学)

Juan Carlos Nieves, Mauricio Osorio, Ulises Cortés

摘要:

本文定义了一种用于不确定、不完全和不一致信息建模的可能性析取逻辑规划方法。该方法引入了可能性选言分句的使用,它能够同时捕获知识库的不完整信息和不完整状态。将可能性逻辑程序看作是一种可能性逻辑理论,定义了一种基于回答集和可能性逻辑证明理论的可能性逻辑程序设计语义的构造方法.它表明,这种可能性语义的析取逻辑程序可以表征为一个不动点算子。它还表明,建议的可能性语义可以计算的决议算法和考虑最佳反驳从可能性逻辑理论。为了管理不一致的可能性逻辑程序,定义了不一致可能性模型间的偏好准则,并采用割集方法恢复不一致可能性知识库的一致性.该方法是在一个医疗场景中说明。

英文摘要:

In this paper, a possibilistic disjunctive logic programming approach for modeling uncertain, incomplete and inconsistent information is defined. This approach introduces the use of possibilistic disjunctive clauses which are able to capture incomplete information and incomplete states of a knowledge base at the same time. By considering a possibilistic logic program as a possibilistic logic theory, a construction of a possibilistic logic programming semantic based on answer sets and the proof theory of possibilistic logic is defined. It shows that this possibilistic semantics for disjunctive logic programs can be characterized by a fixed-point operator. It is also shown that the suggested possibilistic semantics can be computed by a resolution algorithm and the consideration of optimal refutations from a possibilistic logic theory. In order to manage inconsistent possibilistic logic programs, a preference criterion between inconsistent possibilistic models is defined; in addition, the approach of cuts for restoring consistency of an inconsistent possibilistic knowledge base is adopted. The approach is illustrated in a medical scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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