Pseudo Extension in Default Reasoning and Belief Revision by Model Inference
Hiroko Yuasa, 節夫 有川, Setsuo Arikawa, 寛子 湯浅 · Institutional Repositories DataBase (IRDB) · 1988
This paper is concerlled with extension and belief revision in Reiter's default reasoning, First we introduce a new notion of pseudo extension which is successively constructed from a given default theory. We show that the set of pseudo extensions contains the set of extensions, so that we can get some reasollable candidates of extension in a constructive way. This should be a first step towards computerization of the default reasoning. We also discuss the belief revision problem from the viewpoint of Shapiro's inductive inference of models.