In Web-based Cooperative Information Systems (WCIS), user groups with different roles cooperate through specialized interfaces. Cooperative interaction and user interface structures are usually rather complicated, and modeling has an important part in them. Model-Driven Engineering (MDE) is a software engineering discipline which assists engineers in abstracting system implementations by means ...

With the advent of tablet computers, touch screens, gesture-based interaction and speech recognition, sophisticated applications with Natural User Interfaces (NUIs) become state of the art. NUIs have the potential to support people with disabilities, e.g., in their daily activities or in acquiring specific skills. Yet, one main challenge is that this user group has diverse abilities and handica...

This paper discusses the Visual Information Retrieval (VIR) process and emphasizes the need for more natural interfaces and a better understanding of the user. The central role of user modelling and the importance of the communication channel in a VIR scenario are discussed. We identify areas of research and possible approaches for dealing with the problem of creating effective, user responsive...

Model Driven Engineering (MDE) aims to help software developers to abstract the system implementations by means of models and meta-models. In Web-based Collaborative Information Systems (WCIS) modelling plays an important role, especially in the user-interface field. In this kind of systems, where groups of users (with different roles) cooperate through distributed user interfaces, and the comp...

Natural language processing has been in existence for more than fifty years. During this time, it has significantly contributed to the field of human-computer interaction in terms of theoretical results and practical applications. As computers continue to become more affordable and accessible, the importance of user interfaces that are effective, robust, unobtrusive, and user-friendly – regardl...