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Inference in First-Order Logic

Inference in First-Order Logic

Inference in First-Order Logic. ????? ?????????? ??????? ??? (karma@pusan.ac.kr). Outline. Reducing first-order inference to propositional inference Unification Generalized Modus Ponens Forward chaining Backward chaining Resolution. Universal instantiation (UI).

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441 views • 34 slides
First-Order Logic: Review

First-Order Logic: Review

First-Order Logic: Review. First-order logic. First-order logic (FOL) models the world in terms of Objects, which are things with individual identities Properties of objects that distinguish them from others Relations that hold among sets of objects

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325 views • 32 slides
Standard Logical Equivalences

Standard Logical Equivalences

Standard Logical Equivalences. Resolution Procedure (aka Resolution Refutation Procedure). Resolution procedure is a complete inference procedure for FOL Resolution procedure uses a single rule of inference: the Resolution Rule (RR), which is a generalization of the same rule used in PL

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322 views • 31 slides
First-Order Logic: Review

First-Order Logic: Review

First-Order Logic: Review. RDFS/OWL Smantics. The semantics of RDFS and OWL are based on First Order Logic Advantages: Familiar, well defined, well understood, expressive, powerful Good procedures/tools for inference Disadvantages

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279 views • 27 slides
Towards the Adaptive Semantic Web

Towards the Adaptive Semantic Web

Peter Dolog Nicola Henze Wolfgang Nejdl Michael Sintek. Towards the Adaptive Semantic Web. Towards the Adaptive Semantic Web: Goal. Formalize personalization techniques from Adaptive Hypermedia Re-usable formalism Applicable for Semantic Web Operate on Logic-Layer of Semantic Web Tower

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231 views • 8 slides

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