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» Tractable Temporal Reasoning
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2011
13 years 15 days ago
On P/NP Dichotomies for EL Subsumption under Relational Constraints
Abstract. We consider the problem of characterising relational constraints under which TBox reasoning in EL is tractable. We obtain P vs. coNP-hardness dichotomies for tabular cons...
Agi Kurucz, Frank Wolter, Michael Zakharyaschev
KR
1992
Springer
14 years 1 months ago
Order of Magnitude Reasoning using Logarithms
Converting complex equations into simpler, more tractable equations usually involves approximation. Approximation is usually done by identifying and removing insignificant terms, ...
P. Pandurang Nayak
CADE
2002
Springer
14 years 9 months ago
Reasoning with Expressive Description Logics: Theory and Practice
Abstract. Description Logics are a family of class based knowledge representation formalisms characterised by the use of various constructors to build complex classes from simpler ...
Ian Horrocks
DEXAW
2007
IEEE
160views Database» more  DEXAW 2007»
14 years 3 months ago
RDF and Logic: Reasoning and Extension
In this paper we explore embeddings of the various kinds of RDF entailment in F-Logic. We show that the embeddings of simple, RDF, and RDFS entailment, as well as a large fragment...
Jos de Bruijn, Stijn Heymans
IJCAI
2007
13 years 10 months ago
Combining Topological and Directional Information for Spatial Reasoning
Current research on qualitative spatial representation and reasoning usually focuses on one single aspect of space. However, in real world applications, several aspects are often ...
Sanjiang Li