System Description: E-KRHyper

System Description: KRHyper

KRHyper is a first order logic theorem proving and model generation system based on the hyper tableau calculus. It is targeted for use as an embedded system within knowledge based applications. In contrast to most first order theorem provers, it supports features important for those applications, for example queries with predicate extensions as answers, handling of large sets of uniformly struc...

System Des ription: KRHyper

E-Hyper Tableaux with Distinct Object Identifiers

E-KRHyper is a versatile theorem prover and model generator for firstorder logic that natively supports equality. Inequality of constants, however, has to be given by explicitly adding facts. As the amount of these facts grows quadratically in the number of these distinct constants, the knowledge base is blown up. This makes it harder for a human reader to focus on the actual problem, and impai...

Model-Based Deduction for Knowledge Representation

This paper argues that model-based automated deduction techniques are very well suited for knowledge representation purposes. As a motivation we describe three applications and we discuss the requirements for a knowledge representation formalism. The presentation of our KR-system, KRHYPER, is centered aoround the equation KRHYPER = Kernel+ Logic Programming where we put particular emphasis on t...

KRHyper Inside — Model Based Deduction in Applications

Three real world applications are depicted which all have in common, that their core component is a full first order theorem prover, based on the hyper tableau calculus. These applications concern information retrieval in electronic publishing, the integration of description logics with other knowledge representation techniques and XML query processing.