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JODS
2006

Inheritance in Rule-Based Frame Systems: Semantics and Inference

13 years 6 months ago
Inheritance in Rule-Based Frame Systems: Semantics and Inference
Knowledge representation languages that combine rules with object-oriented features akin to frame systems have recently attracted a lot of research interest, and F-logic is widely seen as a basis to achieve this integration. In this paper we extend the original F-logic formalism with an array of salient features that are essential for representing and reasoning with commonsense knowledge. In particular, we extend the syntax and semantics of F-logic to incorporate nonmonotonic multiple inheritance of class and instance methods in the presentence of class hierarchies defined via rules. The new semantics is completely model-theoretic and is free of the defects that caused the original F-logic to produce unintuitive results due to the unusual interaction between default inheritance and inference via rules. Moreover, we provide a computational framework for the new F-logic semantics which can be implemented by inference engines using either forward or backward chaining mechanisms.
Guizhen Yang, Michael Kifer
Added 13 Dec 2010
Updated 13 Dec 2010
Type Journal
Year 2006
Where JODS
Authors Guizhen Yang, Michael Kifer
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