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Understands the principles and practice of inferencing.

IRIS RDFS Reasoner

The RDFS Reasoner is a framework that enables reasoning over RDF Schema ontologies and that uses IRIS as underlying reasoning engine. The RDFS Reasoner implementation [...]

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By |September 15th, 2015|Comments Off on IRIS RDFS Reasoner

RDF and Logic: Reasoning and Extension

This paper explores embedding the various kinds of RDF entailment in F-Logic. It shows that the embedding of simple, RDF, and RDFS entailment, as well [...]

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By |September 15th, 2015|Comments Off on RDF and Logic: Reasoning and Extension

Querying Semantic Web Data with SPARQL (and SPARQL 1.1)

This lengthy slide presentation covers SPARQL 1.1. It begins with the fundamentals: graph patterns, operators, and algebraic representations. The second half dives deeply into complex [...]

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By |September 15th, 2015|Comments Off on Querying Semantic Web Data with SPARQL (and SPARQL 1.1)

Towards Reconciling SPARQL and Certain Answers

SPARQL entailment regimes are strongly influenced by the big body of works on ontology-based query answering, notably in the area of Description Logics (DLs). However, [...]

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By |September 15th, 2015|Comments Off on Towards Reconciling SPARQL and Certain Answers

ELITE: An Entailment-based Federated Query Engine for Complete and Transparent Semantic Data Integration

In recent years, the core of the Semantic Web has evolved to a conceptual layer built by a set of ontologies mapped onto data distributed [...]

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By |September 15th, 2015|Comments Off on ELITE: An Entailment-based Federated Query Engine for Complete and Transparent Semantic Data Integration

Updating RDFS ABoxes and TBoxes in SPARQL

Updates in RDF stores have recently been standardized in the SPARQL 1.1 Update specification. However, computing answers entailed by ontologies in triple stores is usually [...]

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By |September 15th, 2015|Comments Off on Updating RDFS ABoxes and TBoxes in SPARQL

Using SPARQL with RDFS and OWL Entailment

This chapter accompanied the lecture on SPARQL with entailment regimes given at the 7th Reasoning Web Summer School in Galway, Ireland, 2011. It first introduces [...]

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By |September 15th, 2015|Comments Off on Using SPARQL with RDFS and OWL Entailment

On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes

This paper studies the semantics of SPARQL queries with optional matching features under entailment regimes. It argues that the normative semantics may lead to answers [...]

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By |September 15th, 2015|Comments Off on On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes

Dynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes?

SPARQL is the W3C standard for querying RDF data, but it mostly provides means for querying simple RDF graphs only, whereas querying with respect to [...]

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By |September 15th, 2015|Comments Off on Dynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes?

SPARQL Beyond Subgraph Matching

This paper describes the extension of the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, [...]

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By |September 15th, 2015|Comments Off on SPARQL Beyond Subgraph Matching