Browsing by Author "Polleres, Axel"

Now showing items 1-20 of 52

    • A general framework for representing, reasoning and querying with annotated semantic web data 

      Zimmermann, Antoine; Lopes, Nuno; Polleres, Axel; Straccia, Umberto (Elsevier BV, 2012-03-01)

    • A semantical framework for hybrid knowledge bases 

      de Bruijn, Jos; Pearce, David; Polleres, Axel; Valverde, Agustín (Springer Nature, 2010-05-09)
      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 ...

    • An empirical survey of linked data conformance 

      Hogan, Aidan; Umbrich, Jürgen; Harth, Andreas; Cyganiak, Richard; Polleres, Axel; Decker, Stefan (Elsevier BV, 2012-07-01)

    • Automatic Location of Services 

      Keller, Uwe; Polleres, Axel; Fensel, Dieter (2005)
      The automatic location of services that fulfill a given need is seen as a key step towards dynamic and scalable integration. In this paper we present a model for the automatic location of services that considers the static ...

    • A decade of Semantic Web research through the lenses of a mixed methods approach 

      Kirrane, Sabrina; Sabou, Marta; Fernandez, Javier D.; Osborne, Francesco; Robin, Cécile; Buitelaar, Paul; Motta, Enrico; Polleres, Axel (IOS Press, 2019-06-20)
      The identification of research topics and trends is an important scientometric activity, as it can help guide the direction of future research. In the Semantic Web area, initially topic and trend detection was primarily ...

    • dlvhex-sparql: A SPARQL-compliant query engine based on dlvhex 

      Polleres, Axel (CEUR, 2007)
      This paper describes the dlvhex SPARQL plugin, a query processor for the upcoming Semantic Web query language standard by W3C. We report on the implementation of this languages using dlvhex, a flexible plugin system ...

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

      Krennwallner, Thomas; Martello, Alessandra; Polleres, Axel (Springer, 2009)
      RDF Schema (RDFS) as a lightweight ontology language is gaining popularity and, consequently, tools for scalable RDFS inference and querying are needed. SPARQL has become recently aW3C standard for querying RDF data, ...

    • Embedding non-ground logic programs into autoepistemic logic for knowledge base combination 

      Polleres, Axel (2011)
      In the context of the Semantic Web, several approaches to the combination of ontologies, given in terms of theories of classical first-order logic and rule bases, have been proposed. They either cast rules into classical ...

    • Embedding nonground logic programs into autoepistemic logic for knowledge-base combination 

      Bruijn, Jos De; Eiter, Thomas; Polleres, Axel; Tompits, Hans (Association for Computing Machinery (ACM), 2011-05-01)
      In the context of the Semantic Web, several approaches for combining ontologies, given in terms of theories of classical first-order logic and rule bases, have been proposed. They either cast rules into classical logic or ...

    • Enabling Trust and Privacy on the Social Web 

      Passant, Alexandre; Hausenblas, Michael; Polleres, Axel; Decker, Stefan (2009)

    • Entailment for Domain-restricted RDF 

      Polleres, Axel (Springer, 2008)
      We introduce domain-restricted RDF (dRDF) which allows to associate an RDF graph with a fixed, finite domain that interpretations for it may range over. We show that dRDF is a real extension of RDF and discuss impacts on ...

    • Exploiting RDFS and OWL for Integrating Heterogeneous, Large-Scale, Linked Data Corpora 

      Hogan, Aidan (2011-03-11)
      The Web contains a vast amount of information on an abundance of topics, much of which is encoded as structured data indexed by local databases. However, these databases are rarely interconnected and information reuse ...

    • A Formal Investigation of Semantic Interoperability of HCLS Systems 

      Sahay, Ratnesh; Zimmermann, Antoine; Fox, Ronan; Polleres, Axel; Hauswirth, Manfred (IGI Global, 2013-06)
      Semantic interoperability facilitates Health Care and Life Sciences (HCLS) systems in connecting stakeholders at various levels as well as ensuring seamless use of healthcare resources. Their scope ranges from local to ...

    • Heterogeneity and Context in Semantic-Web-Enabled HCLS Systems 

      Zimmermann, Antoine; Sahay, Ratnesh; Fox, Ronan; Polleres, Axel (Springer, 2009)
      The need for semantics preserving integration of complex data has been widely recognized in the healthcare domain. While standards such as Health Level Seven (HL7) have been developed in this direction, they have mostly ...

    • A Hybrid Framework for Querying Linked Data Dynamically 

      Umbrich, Jürgen (2012-09-28)
      As of today, the Web has evolved to become the largest collection of information made available by mankind. Researchers and developers are continuously working on transforming this loosely connected data collection into ...

    • inContext: A Pervasive and Collaborative Working Environment for Emerging Team Forms 

      Polleres, Axel (2008)
      Participants in current team collaborations belong to different organizations, work on multiple objectives at the same time, and frequently change locations. They use different devices and infrastructures in collaboration ...

    • Integrating Heterogeneous Data by Extending Semantic Web Standards 

      Lopes, Nuno (2012-09-28)
      In enterprises different software applications are used to manage specific functions: customer relations, human resources, and manufacturing, each requiring specialised software. Relational databases are commonly used as ...

    • Integrating Social Networks and Sensor Networks 

      Breslin, John; Decker, Stefan; Hauswirth, Manfred; Hynes, Gearoid; Phuoc, Danh Le; Passant, Alexandre; Polleres, Axel; Rabsch, Cornelius; Reynolds, Vinny (2009)

    • A Logic Programming approach for Access Control over RDF 

      Lopes, Nuno; Kirrane, Sabrina; Mileo, Alessandra; Zimmermann, Antoine; Polleres, Axel (International Conference on Logic Programming (ICLP), 2012)
      The Resource Description Framework (RDF) is an interoperable data representation format suitable for interchange and integration of data, especially in Open Data contexts. However, RDF is also becoming increasingly attractive ...

    • A Logical Framework for Web Service Discovery 

      Polleres, Axel; Keller, Uwe; Fensel, Dieter (IEEE, 2004)
      Current technologies for Web Services are based on syntactical descriptions and, therefore, lend themselves to only limited amount of automation. Research efforts in Semantic Web Services, such as WSMO, try to overcome ...