Query Processing in a Mediator Based Framework for Linked Data Integration

In this paper, the authors present a three-level mediator based framework for linked data integration. In the approach, the mediated schema is represented by a domain ontology, which provides a conceptual representation of the application. Each relevant data source is described by a source ontology, published on the Web according to the Linked Data principles. Each source ontology is rewritten as an application ontology, whose vocabulary is restricted to be a subset of the vocabulary of the domain ontology. The main contribution of the paper is an algorithm for reformulating a user query into sub-queries over the data sources. The reformulation algorithm exploits inter-ontology links to return more complete query results. The approach is illustrated by an example of a virtual store mediating access to online booksellers.

[1]  Antonio L. Furtado,et al.  A Strategy to Revise the Constraints of the Mediated Schema , 2009, ER.

[2]  Ian Horrocks,et al.  OWL Web Ontology Language Reference-W3C Recommen-dation , 2004 .

[3]  Stefan Hüsig,et al.  Analyzing the Disruptive Potential in the Telecommunications Industry , 2009 .

[4]  Isabel F. Cruz,et al.  An ontology-based framework for XML semantic integration , 2004, Proceedings. International Database Engineering and Applications Symposium, 2004. IDEAS '04..

[5]  Klaus R. Dittrich,et al.  Three decades of data integration - All problems solved? , 2004, IFIP Congress Topical Sessions.

[6]  Diego Calvanese,et al.  Data Integration throughDL-LiteA Ontologies , 2008, SDKB.

[7]  Sangin Park.  Strategies and Policies in Digital Convergence , 2007 .

[8]  Diego Calvanese,et al.  Data Integration through DL-LiteA Ontologies , 2008, SDKB 2008.

[9]  Masatoshi Yoshikawa,et al.  ILOG: Declarative Creation and Manipulation of Object Identifiers , 1990, VLDB.

[10]  Laura M. Haas,et al.  Optimizing Queries Across Diverse Data Sources , 1997, VLDB.

[11]  Maurizio Lenzerini,et al.  Data integration: a theoretical perspective , 2002, PODS.

[12]  Hiroyuki Morikawa,et al.  A Ranging Process in IEEE 802.16 Relay System , 2009, Int. J. Interdiscip. Telecommun. Netw..

[13]  Luciano Serafini,et al.  Reconciling Concepts and Relations in Heterogeneous Ontologies , 2006, SWAP.

[14]  L. Stein,et al.  OWL Web Ontology Language - Reference , 2004 .

[15]  Harry Halpin,et al.  Identity, Reference, and Meaning on the Web , 2006 .

[16]  E. Prud hommeaux,et al.  SPARQL query language for RDF , 2011 .

[17]  Izabella Lokshina,et al.  Modeling and Simulation of Traffic with Integrated Services at Media Getaway Nodes in Next Generation Networks , 2011, Int. J. Interdiscip. Telecommun. Netw..

[18]  Heiner Stuckenschmidt,et al.  Ontology-Based Integration of Information - A Survey of Existing Approaches , 2001, OIS@IJCAI.

[19]  Wolfram Wöß,et al.  A Semantic Web middleware for Virtual Data Integration on the Web , 2008, ESWC.

[20]  Donald Kossmann,et al.  The state of the art in distributed query processing , 2000, CSUR.

[21]  Marco A. Casanova,et al.  Towards Automatic Generation of Application Ontologies , 2010, J. Inf. Data Manag..

[22]  Tim Berners-Lee,et al.  Linked Data - The Story So Far , 2009, Int. J. Semantic Web Inf. Syst..

[23]  A. N. Wilschut,et al.  Dataflow query execution in a parallel main-memory environment , 1991, Distributed and Parallel Databases.

[24]  Christian Bizer,et al.  Executing SPARQL Queries over the Web of Linked Data , 2009, SEMWEB.

[25]  Ulf Leser,et al.  Querying Distributed RDF Data Sources with SPARQL , 2008, ESWC.

[26]  Lydia B. Chilton,et al.  Tabulator: Exploring and Analyzing linked data on the Semantic Web , 2006 .

[27]  P. Sreenivasa Kumar,et al.  Optimizing SPARQL queries over the Web of Linked Data , 2010 .

[28]  Michael Lutz,et al.  Ontology-based discovery and composition of geographic information services , 2005 .

[29]  Marco A. Casanova,et al.  An Ontology-Based Framework for Geographic Data Integration , 2009, ER Workshops.

[30]  M. Jussawalla.  Broadband Technology: Challenges and Opportunities for Digital Convergence , 2007 .

[31]  Marcelo Arenas,et al.  Semantics and complexity of SPARQL , 2006, TODS.

[32]  Nektarios Gioldasis,et al.  Towards a Mediator Based on OWL and SPARQL , 2009, WSKS.

[33]  Gio Wiederhold,et al.  Mediators in the architecture of future information systems , 1992, Computer.