Realizing the Hydrogen Economy through Semantic Web Technologies

The FUSION (Fuel Cell Understanding through Semantic Inferencing, Ontologies and Nanotechnology) project applies, extends, and combines Semantic Web technologies and image analysis techniques to develop a knowledge management system to optimize the design of fuel cells

User-system cooperation in document annotation based on information extraction

The process of document annotation for the Semantic Web is complex and time consuming, as it requires a great deal of manual annotation. Information extraction from texts (IE) is a technology used by some very recent systems for reducing the burden of annotation. The integration of IE systems in annotation tools is quite a new development and there is still the necessity of thinking the impact of the IE system on the whole annotation process. In this paper we initially discuss a number of requirements for the use of IE as support for annotation. Then we present and discuss a model of interaction that addresses such issues and Melita, an annotation framework that implements a methodology for active annotation for the Semantic Web based on IE. Finally we present an experiment that quantifies the gain in using IE as support to human annotators.peer-reviewe

Onto⇔SOA: From Ontology-enabled SOA to

Abstract — The significant potential of the combination of ontologies and SOA has been recognized in the field of Semantic Web Services (SWS). The OWL-S and WSMF approaches provide us with ontology-based frameworks for WSDL web services to enable automation of high-level tasks such as discovery, invocation and composition of web services. We also investigate ontologies and SOA but our initial focus is on the software architectural aspects of ontology-enabled services We set up to define a general Ontology-enabled Service-Oriented Architectural style (Onto-SOA). Onto-SOA is independent from an ontology language and a particular web service technology and, therefore, is applicable within any approach that combines ontologies and SOA. With Onto-SOA we discover that the relation between an ontology and a service is bi-directional: not only an ontology brings shared semantics to services, but also services can be integrated into an ontology (language). The latter provides an ontology with a service-enabled mechanism capable of connecting an arbitrary service to an ontology. In order to illustrate the bidirectionality and to validate Onto-SOA, we further specialize it into MoRe – an RDF/S-enabled SOA with elements of the REST web services – and then apply MoRe to the unit conversion problem in the e-Science domain. I