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On Open Defaults (1990)
Vladimir Lifschitz
In Reiter's default logic, the parameters of a default are treated as metavariables for ground terms. We propose an alternative definition of an extension for a default theory, which handles parameters as genuine object variables. The new form of default logic may be preferable when the domain closure assumption is not postulated. It stands in a particularly simple relation to circumscription. Like circumscription, it can be viewed as a syntactic transformation of formulas of higher order logic.
View:
PS
Citation:
In
Computational Logic: Symposium Proceedings
, Lloyd, John (Eds.), pp. 80-95 1990. Springer.
Bibtex:
@INPROCEEDINGS{lif90a, title={On Open Defaults}, author={Vladimir Lifschitz}, booktitle={Computational Logic: Symposium Proceedings}, editor={Lloyd, John}, publisher={Springer}, pages={80-95}, url="http://www.cs.utexas.edu/users/ai-lab/?lif90a", year={1990} }
People
Vladimir Lifschitz
Faculty
vl [at] cs utexas edu
Areas of Interest
Default Logic
Nonmonotonic Reasoning
Labs
Texas Action Group