Kay-Uwe Schmidt

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Today's knowledge workers are confronted with an ever increasing information overload while searching for needed information in the web. Common search engines do not take into account the current work context of the user. But we consider context information as an effective means to implicitly narrow the information space of the web. In this paper we present(More)
Despite the huge popularity of event processing nowadays, there is a big gap between the potential usefulness of event-driven processing and the current state of the practice. One of the main reasons is the lack of a comprehensive conceptual model for the event-triggered reactivity and the corresponding framework for its management. In this paper we survey(More)
In this paper we describe an adaptive e-questionnaire system that can be used for measuring user feedback concerning the quality of portals and e-services. The proposed system applies three axes of adaptation: based on real-time feedback from users through questionnaires, based on problems encountered by the user and based on metadata of the pages visited(More)
One important aspect of ubiquitous environments is to provide users with the possibility to freely move about and continue to interact with the available applications through a variety of interactive devices such as cell phones, PDAs, desktop computers, intelligent watches or digital television sets. Migratory applications are able to follow the user by(More)
Event-driven processing becomes ever important for applications such as reactive context-aware mobility applications, attentionhandling and pervasive collaboration systems etc. However today’s reactive systems define complex events with rather precise specifications. In some applications, such as fraud or failure detection, identification of similar event(More)
Rich Internet Applications provide, in conjunction with Internet push technologies, a powerful framework to bring use cases formerly reserved to server applications to the client, and to ease their use. In this paper we present a novel approach of monitoring and processing event streams directly in the browser. Our proposed general-purpose framework aims at(More)
In this paper we present a method and an implementation for creating and processing semantic events from interaction with Web pages which opens possibilities to build event-driven applications for the (Semantic) Web. Events, simple or complex, are models for things that happen e.g., when a user interacts with a Web page. Events are consumed in some(More)