András Micsik

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The paper presents the main results of the IST FP6 INFRAWEBS project. The project has developed an easy and effective way of constructing and using semantic descriptions for existing and new Web services. INFRAWEBS has adopted the WSMO (Web Service Modeling Ontology) and WSML (Web Service Modeling Language) specifications and has imposed no additional(More)
Evaluation of digital libraries (DLs) is essential for further development in this area. Whereas previous approaches were restricted to certain facets of the problem, we argue that evaluation of DLs should be based on a broad view of the subject area. For this purpose, we develop a new description scheme using four major dimensions: data/collection,(More)
Digital libraries (DLs) are new and innovative information systems, under constant development and change, and therefore evaluation is of critical importance to ensure not only their correct evolution but also their acceptance by the user and application communities. The Evaluation activity of the DELOS Network of Excellence has performed a large-scale(More)
The CORES metadata schemas registry is designed to enable users to discover and navigate metadata element sets. The paper reflects on some of the experiences of implementing the registry, and examines some of the issues of promoting such services in the context of a "partially Semantic Web" where metadata applications are evolving and many have not yet(More)
In this paper we describe a framework for the automatic transformation of databases from the conceptual to the internal level. Our approach ts in with the ANSI/SPARC three level architecture for database management systems. The framework consists of three components: structures (database schemata), populations (database contents) and operations (database(More)
Moving towards a global market of services requires flexible infrastructures that will deal with the inevitable semantic heterogeneity that occurs during the negotiation that precedes the trading of a service. In order to reach an agreement, the negotiating parties need to understand the concepts describing the Quality of Service (QoS) terms which are part(More)
Start date: 2004-Aug-01 End date: 2007-Jan-31 Participants: University of Applied Sciences, Bochum, Germany; University of Innsbruck, Austria; Bulgarian Academy of Science, Institute of Information Technology, Bulgaria; MTA SZTAKI, Hungary; National Technical University of Athens, Greece; Profium SA, Finland; Sirma SAI, Bulgaria; FUTUREtec-GmbH, Germany;(More)
Evaluation of digital libraries assesses their effectiveness, quality and overall impact. To facilitate the comparison of different evaluations and to support the re-use of evaluation data, we are proposing a new logging schema. This schema will allow for logging and sharing of a wide array of data about users, systems and their interactions. We discuss the(More)