A. de Vries

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By developing demonstrators and performing small-scale user trials, we found various opportunities and pitfalls for deploying personal networks (PNs) on a commercial basis. The demonstrators were created using as many as possible legacy devices and proven technologies. They deal with applications in the health sector, home services, tourism, and the(More)
OBJECTIVE Today, there are many barriers that prevent seamless electronic voice and data communication with remote content and services that the user wants to access at a certain time and place. This is especially the case in hospitals, where the communication needs are very complex and context dependent, and where strict privacy and safety conditions(More)
The ECIR half-day workshop on Task-Based and Aggregated Search (TBAS) was held in Barcelona, Spain on 1 April 2012. The program included a keynote talk by Professor Järvelin, six full paper presentations, two poster presentations, and an interactive discussion among the approximately 25 participants. This report overviews the aims and contents of the(More)
i Preface Introduction Measuring the error in predicting held-out user rating values has been by far the dominant offline evaluation methodology in the Recommender Systems (RS) literature. Yet there seems to be a general consensus in the community that this criterion alone is far from being enough or even adequate to assess the practical effectiveness of a(More)
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