<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>5</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Matthias Knorr</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Querying EL+ with Nonmonotonic Rules</style></title><secondary-title><style face="normal" font="default" size="100%">ECAI 2010 - 19th European Conference on Artificial Intelligence</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://docentes.fct.unl.pt/sites/default/files/jja/files/ecai10.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">IOS Press</style></publisher><pages><style face="normal" font="default" size="100%">1079–1080</style></pages><isbn><style face="normal" font="default" size="100%">978-1-60750-605-8</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A general top-down algorithmization for the Well-Founded MKNF Semantics - a semantics for combining rules and&lt;br /&gt;
ontologies - was recently defined based on an extension of SLG resolution for Logic Programming with an abstract oracle to the parametric ontology language. Here we provide a concrete oracle with practical usage, namely for EL+ which is tractable for reasoning tasks like subsumption. We show that the defined oracle remains tractable&lt;br /&gt;
(wrt. data complexity) so that the combined (query-driven) approach of non-monotonic rules with that oracle is tractable as well.&lt;/p&gt;
</style></abstract><notes><style face="normal" font="default" size="100%">&lt;p&gt;n/a&lt;/p&gt;
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