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    2011
    172views Automated Reasoning» more  DLOG 2011»
    On P/NP Dichotomies for EL Subsumption under Relational Constraints
    12 years 8 months ago
    On P/NP Dichotomies for EL Subsumption under Relational Constraints
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    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
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    DLOG
    2011
    198views Automated Reasoning» more  DLOG 2011»
    Reasoning-Supported Interactive Revision of Knowledge Bases
    12 years 8 months ago
    Reasoning-Supported Interactive Revision of Knowledge Bases
    Download  sunsite.informatik.rwth-aachen.de
    We propose a method for controlling the quality of (semi-)automatically acquired axioms. We combine the manual inspection of axioms with automatic evaluation decisions and propose ...
    Nadeschda Nikitina, Sebastian Rudolph, Birte Glimm
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    DLOG
    2011
    215views Automated Reasoning» more  DLOG 2011»
    Module Extraction via Query Inseparability in OWL 2 QL
    12 years 8 months ago
    Module Extraction via Query Inseparability in OWL 2 QL
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    We show that deciding conjunctive query inseparability for OWL 2 QL ontologies is PSpace-hard and in ExpTime. We give polynomial-time (incomplete) algorithms and demonstrate by exp...
    Boris Konev, Roman Kontchakov, Michel Ludwig, Thom...
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    DLOG
    2011
    230views Automated Reasoning» more  DLOG 2011»
    Two-Dimensional Description Logics of Context
    12 years 8 months ago
    Two-Dimensional Description Logics of Context
    Download  sunsite.informatik.rwth-aachen.de
    We introduce an extension of Description Logics (DLs) for representing and reasoning about contextualized knowledge. Our formalism is inspired by McCarthy’s theory of formalizing...
    Szymon Klarman, Víctor Gutiérrez-Bas...
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    DLOG
    2011
    235views Automated Reasoning» more  DLOG 2011»
    Bidirectional Reachability-Based Modules
    12 years 8 months ago
    Bidirectional Reachability-Based Modules
    Download  sunsite.informatik.rwth-aachen.de
    We introduce an algorithm for MinA extraction in EL based on bidirectional reachability. We obtain a significant reduction in the size of modules extracted at almost no additional...
    Riku Nortje, Arina Britz, Thomas Andreas Meyer
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