In this research report we study service coordination, which is a crucial aspect when services are combined into service-based systems (Metzger & Pohl, 2009).Coordination is not only in computer science an important research topic. It is also studied in disciplines such as organization theory,...

The WS-Events specification consists of ‘a set of processing rules for advertising, subscribing, producing and consuming Web services Events’. All authors of this specification are based at Hewlett-Packard. Further development of WS-Events is not on the agenda anymore. Therefore we only give...

Successful E-Business is based on seamless collaborative business processes. Each partner in the collaboration specifies its own rules and interaction preconditions. The verification of the compatibility of collaborative business processes, based on local and global views, is a complex task,...

Recently, Business Process Management (BPM) has gained a lot of attention both from the academic world and the industrial world. The similarities between workflow management and business process management can make one wonder whether it's all old wine in new bottles. But although there are many...

In order to realize successful Business-to-Business integration (B2Bi) the parties involved should agree on a number of business and ICT-related issues. These agreements may be based on bilateral discussions or on proprietary or open standards. The appropriateness of using standards depends on...

Web services are a recent, Internet based technology to integrate applications and business processes within a single company and across multiple companies. This paper first sketches the basic principles that underlie web services and then proposes an event based integration approach, where...

Current methods of evaluating the quality of recommender systems are based on averages of metrics such as the average normalized discounted cumulative gain, average diversity and average reciprocity. Averages of metrics give a good sense of the overall quality of the recommendations, but not of...