Conservative expansion concepts for default theories

G. Antoniou, C. K. Macnish, N. Y. Foo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


Conservative extensions of logical theories play an important role in software engineering. They provide a formal basis for program refinement and guarantee the integrity and transparency of modules and objects. This paper studies conservative extension ideas in the context of default logic. In particular, we define several alternative concepts, study their properties, and derive interconnections among the concepts. The main result provides an interesting distinctive feature of Reiter’s default logic over some well-known variants.

Original languageEnglish
Title of host publicationPRICAI 1996
Subtitle of host publicationTopics in Artificial Intelligence - 4th Pacific Rim International Conference on Artificial Intelligence, Proceedings
EditorsNorman Foo, Randy Goebel
PublisherSpringer Verlag
Number of pages12
ISBN (Print)3540615326, 9783540615323
Publication statusPublished - 1996
Externally publishedYes
Event4th Pacific Rim International Conference on Artificial Intelligence: Workshops on Reasoning with Incomplete and Changing Information and on Inducing Complex Representations - Cairns, Australia
Duration: 26 Aug 199630 Aug 1996
Conference number: 4

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference4th Pacific Rim International Conference on Artificial Intelligence
Abbreviated titlePRICAI 1996


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