Titlebook: Web Reasoning and Rule Systems; 6th International Co Markus Krötzsch,Umberto Straccia Conference proceedings 2012 Springer-Verlag Berlin He

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prostatitis

Distributed Ontology Based Data Access via Logic Programmingprise – have started to build ontological reasoning modules on top of their existing software. Ontological reasoning is also the goal of several research-based systems, such as Quest, Owlgres, Owlim, and QuOnto, just to cite a few.

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庄严

The Definability Abduction Problem for Data Exchangeight be more than one target databases satisfying a given mapping. That is, the target database is actually an .. represented by a set of possible databases. Therefore, the problem of query answering the target data is inherently complex for general (non-positive) relational or aggregate queries.

弯弯曲曲

0302-9743 sections on technical communications, algorithms, design aspects of rule markup, design of ontology languages, engineering of engines, translators, and other tools, standardization efforts, such as the Rules Interchange Format activity at W3C, and applications.978-3-642-33202-9978-3-642-33203-6Series ISSN 0302-9743 Series E-ISSN 1611-3349

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Query Patterns for Existential Rulesable to compute a simplified Datalog+/– program .′ that is equivalent to . with respect to answering queries in .. We show that such an algorithm constitutes both a theoretical and a practical interesting tool for studying query answering over ontologies expressed in terms of Datalog+/– rules.

Crepitus

A Sound and Complete Backward Chaining Algorithm for Existential Rules to identify subsets of atoms from the query that must be processed together. We first show that our rewriting method computes a minimal set of CQs when this set is finite, i.e., the set of rules is a fus. We then focus on optimizing the rewriting step. First experiments are reported.

使害羞

A Sound and Complete Backward Chaining Algorithm for Existential Rules to identify subsets of atoms from the query that must be processed together. We first show that our rewriting method computes a minimal set of CQs when this set is finite, i.e., the set of rules is a fus. We then focus on optimizing the rewriting step. First experiments are reported.

杀人

Semantic Matchmaking and Ranking: Beyond Deduction in Retrieval Scenariose user and, in case, further explored. In all the above mentioned frameworks, the user query may contain only hard (strict) requirements or may represent also her preferences. We will see how to handle both cases while computing the ranked list of most promising resources.