Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Tompits, Hans
Affiliations: Institut für Informationssysteme 184/3, Technische Universität Wien, Favoritenstraße 9‐11, A‐1040 Vienna, Austria E‐mail: tompits@kr.tuwien.ac.at
Abstract: Abduction is the process of finding explanations for observed phenomena in accord to known laws about a given application domain. This form of reasoning is an important principle of common‐sense reasoning and is particularly relevant in conjunction with nonmonotonic knowledge representation formalisms. In this paper, we deal with a model for abduction in which the domain knowledge is represented in terms of a default theory. We show how the main reasoning tasks associated with this particular form of abduction can be axiomatised within the language of quantified Boolean logic. More specifically, we provide polynomial‐time constructible reductions mapping a given abduction problem into a quantified Boolean formula (QBF) such that the satisfying truth assignments to the free variables of the latter determine the solutions of the original problem. Since there are now efficient QBF‐solvers available, this reduction technique yields a straightforward method to implement the discussed abduction tasks. We describe a realisation of this approach by appeal to the reasoning system QUIP.
Keywords: Default logic, abduction, compilation methods, problem solving, quantified Boolean logic
Journal: AI Communications, vol. 16, no. 2, pp. 89-105, 2003
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl