Browsing by Author "Polleres, Axel"
Now showing items 21-40 of 52
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A Methodological Approach for Ontologising and Aligning Health Level Seven Applications
Sahay, Ratnesh; Fox, Ronan; Polleres, Axel; Hauswrith, Manfred (2011-05)Healthcare applications are complex in the way data and schemas are organised in their internal systems. Widely deployed healthcare standards like Health Level Seven (HL7) V2 are designed using exible schemas which allow ... -
Modeling services for the semantic grid
Polleres, Axel; Fensel, Dieter (2005) -
On the efficiency of joining group patterns in SPARQL queries
Sierra, Javier; Polleres, Axel (2010)In SPARQL, conjunctive queries are expressed by using shared variables across sets of triple patterns, also called basic graph patterns. Based on this characterization, basic graph patterns in a SPARQL query can be ... -
An Ontological Framework for Interoperability of Health Level Seven (HL7) Applications: The PPEPR Methodology and System
Sahay, Ratnesh (2012-09-25)Healthcare applications are complex in the way data and schemas are organised in their internal systems. Healthcare standards have been proposed to reduce heterogeneities between healthcare applications. Widely deployed ... -
OWL DL vs. OWL Flight: Conceptual Modeling and Reasoning for the Semantic Web
Polleres, Axel; Fensel, Dieter (2005)The Semantic Web languages RDFS and OWL have been around for some time now. However, the presence of these languages has not brought the breakthrough of the Semantic Web the creators of the languages had hoped for. OWL has ... -
Previewing Semantic Web Pipes
Phuoc, Danh Le; Polleres, Axel; Samwald, Matthias; Tummarello, Giovanni (Springer, 2008)In this demo we present a first implementation of Semantic Web Pipes, a powerful tool to build RDF-based mashups. Semantic Web pipes are defined in XML and when executed they fetch RDF graphs on the Web, operate on them, ... -
Processing ontology alignments with SPARQL
Polleres, Axel (IEEE, 2008)Solving problems raised by heterogeneous ontologies can be achieved by matching the ontologies and processing the resulting alignments. This is typical of data mediation in which the data must be translated from one ... -
Processing ontology alignments with SPARQL
Polleres, Axel (IEEE Computer Society, 2008) -
Produce and Consume Linked Data with Drupal!
Corlosquet, Stéphane; Delbru, Renaud; Polleres, Axel; Decker, Stefan (Springer, 2009)Currently a large number of Web sites are driven by Content Management Systems (CMS) which manage textual and multimedia content but also - inherently - carry valuable information about a site¿s structure and content ... -
Quantified equilibrium logic and hybrid rules
Polleres, Axel (Springer, 2007)In the ongoing discussion about combining rules and Ontologies on the Semantic Web a recurring issue is how to combine first-order classical logic with nonmonotonic rule languages. Whereas several modular approaches to de- ... -
Robust and scalable linked data reasoning incorporating provenance and trust annotations
Bonatti, Piero A.; Hogan, Aidan; Polleres, Axel; Sauro, Luigi (Elsevier BV, 2011-07-01) -
A rule system for querying persistent RDFS data
Krennwallner, Thomas; Martello, Alessandra; Polleres, Axel (2009)We present GiaBATA, a system for storing, aggregating, and querying Semantic Web data, based on declarative logic programming technology, namely on the dlvhex system, which allows us to implement a fully SPARQL compliant ... -
SAOR: Authoritative Reasoning for the Web
Hogan, Aidan; Harth, Andreas; Polleres, Axel (Springer, 2008)In this paper we discuss the challenges of performing reasoning on large scale RDF datasets from the Web. We discuss issues and practical solutions relating to reasoning over web data using a rule-based approach to ... -
Scalable and distributed methods for entity matching, consolidation and disambiguation over linked data corpora
Hogan, Aidan; Zimmermann, Antoine; Umbrich, Jürgen; Polleres, Axel; Decker, Stefan (Elsevier BV, 2012-01-01) -
Scalable Authoritative OWL Reasoning for the Web
Hogan, Aidan; Harth, Andreas; Polleres, Axel (2009) -
Scalable authoritative owl reasoning for the web
Hogan, Aidan; Harth, Andreas; Polleres, Axel (IGI Global, 2009-01-01)In this article the authors discuss the challenges of performing reasoning on large scale RDF datasets from the Web. Using ter-Horst's pD* fragment of OWL as a base, the authors compose a rule-based framework for application ... -
Scalable Authoritative OWL Reasoning on a Billion Triples
Hogan, Aidan; Harth, Andreas; Polleres, Axel (2008)In this paper we present a scalable algorithm for performing a subset of OWL reasoning over web data using a rule-based approach to forward-chaining; in particular, we identify the problem of ontology hijacking: new ... -
Searching and browsing linked data with swse: the semantic web search engine
Hogan, Aidan; Harth, Andreas; Umbrich, Jürgen; Kinsella, Sheila; Polleres, Axel; Decker, Stefan (Elsevier BV, 2011-12-01) -
SPARQL++ for mapping between RDF vocabularies
Polleres, Axel (Springer, 2007)Lightweight ontologies in the formof RDF vocabularies such as SIOC, FOAF, vCard, etc. are increasingly being used and exported by ¿serious¿ applications recently. Such vocabularies, together with query languages like SPARQL ... -
Towards a social provenance model for the Web
Harth, Andreas; Polleres, Axel; Decker, Stefan (2007)In this position paper we firstly present the established notion of provenance on the Semantic Web (also referred to as named graphs or contexts), and secondly argue for the benefit of adding to the pure technical notion ...