Hendrik Thomas

Learn More
Cross-domain management is an increasingly important concern in network management and such management capability is a key-enabler of many emerging computing environments. This paper analyses the requirements for management systems that aim to support flexible and general capability sharing between autonomously managed domains. It introduces a novel Layered(More)
A common approach to mitigate the effects of ontology heterogeneity is to discover and express the specific correspondences (mappings) between different ontologies. An open research question is: how should such ontology mappings be represented? In recent years several proposals for an ontology mapping representation have been published, but as yet no format(More)
Ontology matching and mapping is of critical importance to effective consumption of distributed and heterogeneous data-sets in today’s Web of Data. Since 2004 the Ontology Alignment Evaluation Initiative (OAEI) provides a number of complex challenges to evaluate the performance of the increasing number of matching tools and methods. This leads to the(More)
The heterogeneity of ontologies is a major obstacle to the promised interoperability of knowledge in the Semantic Web. Ontology mappings can help to mitigate the effects by specifying the correspondences between related ontologies. However, the creation of mappings is still complex and time-consuming and therefore it is appealing to discover existing(More)
Integration of disparate information resources has long been a significant research topic. Semantic approaches can help by allowing expression of concepts divorced from syntax and allowing rich, structured meta-data to be published in a form that is amenable to machine processing, reasoning and inter-domain concept mapping. However the creation of mappings,(More)
J. L. Borges once wrote about a Chinese emperor, who commanded the creation of an accurate map of China [1]. The resulting map was as detailed as possible but therefore it had to match the size of China. What use would make such a map, especially if you have a narrow navigation question, e.g. where the forbidden city is located? This legend makes the(More)
To realize the vision of the semantic web it is essential to be able to exchange formal modeled knowledge between applications and humans without loss of meaning. In this paper, we focus on questions relating to meaning, interpretation and subject identity in modern semantic web languages. Based on the semiotic triangle we show that topics as well as RDF(More)
A common approach to mitigate the effects of ontology heterogeneity is to discover and express the specific correspondences between different ontologies. An open research question is: how should such ontology mappings be represented. In recent years several proposals for an ontology mapping representation have been published, but till today no format is(More)