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Component of Knowledge . NET - Converter into KIF format

Saint Petersburg State University. Component of Knowledge . NET - Converter into KIF format. Presenter Sigalin Maxim. Scientific Adviser Vladimir Safonov, professor of computer science. KIF (Knowledge Interchange Format). Interchange of knowledge. First-order predicate calculus.

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Component of Knowledge . NET - Converter into KIF format

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  1. Saint Petersburg State University Component of Knowledge.NET -Converter into KIF format Presenter Sigalin Maxim Scientific AdviserVladimir Safonov, professor of computer science

  2. KIF (Knowledge Interchange Format) • Interchange of knowledge • First-order predicate calculus • Does not provide forms for defining frames/ontologies • http://logic.stanford.edu/kif/dpans.html

  3. Ontolingua system • KIF-based language • Provides forms for defining frames/ontologies • Set of translators into another knowledge representation systems • http://www.ksl.stanford.edu/software/ontolingua/

  4. Ontolingua translation architecture

  5. Knowledge.NET constructions • Frames • Ontologies

  6. Constructions ofOntolingua • DEFINE-CLASS • DEFINE-FRAME • DEFINE-RELATION • DEFINE-INSTANCE

  7. DEFINE-CLASS (DEFINE-CLASS<structure-name> (<arg>) {:def | :iff-def} <sent-with-arg-vars> [:constraints <sent-with-arg-vars>] [:class-slots (<slot-spec>*)] [:instance-slots (<extended-slot-spec>*)] [:default-slot-values (<slot-spec>*)] )

  8. Example (define-class female-person (?person) "female humans" :iff-def (and (human ?person) (= (gender ?person) female)) )

  9. Slots • Predeterminedown slots: • INSTANCE-OF • SUBCLASS-OF • ...

  10. DEFINE-RELATION (define-relation FR_NAME.SL_NAME (?Frame ?Value) :Def (And (FR_NAME ?Frame) (SL_TYPE ?Value)))

  11. DEFINE-INSTANCE (define-instance<instance-name> (<class-name>+) ... )

  12. Constructionsof KIF • DEFRELATION • DEFOBJECT • Unrestricted type • (defrelation constant sentence*) • (defobject constant sentence*)

  13. Launch fromVisual Studio 2005

  14. Example (defrelation Human (Documentation Human “Class frame Human") (Subclass-Of Human Thing) (Class Human)) (defrelationHuman.Name (Documentation Human.Name “Slot Name of frame Human") (Range Human.Name String) (Domain Human.Name Human) (Slot Human.Name)) (defobjectJack (Human Jack) (Human.Name Jack “Jack”) (Documentation Jack “Instance frame Jack"))

  15. ?

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