The Knowledge Engineering Review

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Ontology mapping: the state of the art 1

a1 Advanced Knowledge Technologies, Department of Electronics and Computer Science, University of Southampton, UK e-mail:
a2 Advanced Knowledge Technologies, Centre for Intelligent Systems and their Applications, School of Informatics, The University of Edinburgh, UK e-mail:
a3 Escola Superior de Tecnologies d'Informació i Comunicació, Universitat Internacional de Catalunya, Spain

Article author query
kalfoglou y   [Google Scholar] 
schorlemmer m   [Google Scholar] 


Ontology mapping is seen as a solution provider in today's landscape of ontology research. As the number of ontologies that are made publicly available and accessible on the Web increases steadily, so does the need for applications to use them. A single ontology is no longer enough to support the tasks envisaged by a distributed environment like the Semantic Web. Multiple ontologies need to be accessed from several applications. Mapping could provide a common layer from which several ontologies could be accessed and hence could exchange information in semantically sound manners. Developing such mappings has been the focus of a variety of works originating from diverse communities over a number of years. In this article we comprehensively review and present these works. We also provide insights on the pragmatics of ontology mapping and elaborate on a theoretical approach for defining ontology mapping.


1 This work is supported under the Advanced Knowledge Technologies (AKT) Interdisciplinary Research Collaboration (IRC), which is sponsored by the UK Engineering and Physical Sciences Research Council under grant number GR/N15764/01. The AKT IRC comprises the Universities of Aberdeen, Edinburgh, Sheffield and Southampton and the Open University. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing official policies or endorsements, either expressed or implied, of the EPSRC or any other member of the AKT IRC.