On the semantics of SPARQL queries with optional matching under entailment regimes

We study the semantics of SPARQL queries with optional matching features under entailment regimes. We argue that the normative semantics may lead to answers that are in conflict with the intuitive meaning of optional matching, where unbound variables naturally represent unknown information. We propo...

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Bibliographic Details
Main Authors: Kostylev, E, Grau, B
Other Authors: Mika, P
Format: Conference item
Published: Springer 2014