Information interaction is the process that people use in interacting with the content of an information system. Information architecture is a blueprint and navigational aid to the content of information-rich systems. As such information architecture performs an important supporting role in information interactivity. This article elaborates on a model of information interactivity that crosses t...

In this paper we propose an architecture for dialogue systems that incorporate information extraction, thereby providing natural and efficient access to unstructured information sources. A key feature of the architecture is the use of ontologies as shared domain knowledge sources. We discuss how ontologies can be used for various tasks. with focus on question analysis, dialogue interaction and ...

Most cooperation support systems require information about the organisational context in which they are used. This is particularly required when systems are used in a large organisation or for the support of inter-organisational cooperation. Following from this requirement, this paper presents the design and functionality of the organisational information system TOSCA for cooperation support sy...

Meta-features are used to describe properties and characteristics of datasets and construct the feature space for meta-learning. Many of the different meta-features are defined for single variables and, therefore, are computed per feature of the dataset. Since datasets contain different numbers of features but meta-learning requires feature vectors of the same size, such measures are typically ...

The goal of this research is to provide hypermedia functionality to all information systems. In this paper I present the architecture of a system-level hypermedia engine, designed both to manage fill hypermedia finctionality for an information system and to bind intelfaceoriented 'Ifront-end" systems with separate computationoriented "back-end "systems. The engine dynamically superimposes a hyp...

Awareness has now become a widely accepted central feature in groupware systems. In this context, providing an awareness support consists in delivering to users involved in a collaborative task, information concerning their group, other users, their past, present or future roles or activities, etc. However, one of the potential underlying risks of such a support is to produce too much informati...

In this paper we describe a system, called GAIN (Group Adapted Interaction for News), which selects background information to be displayed in public shared environments according to preferences of the group of people present in there. In ambient intelligence contexts, we cannot assume that the system will be able to know every users physically present in the environment and therefore to access ...