Thomas Visser

Learn More
The use of context-aware technology in the home enables new ways to stimulate elderly in increasing their exercise levels, and consequently prevent age-related health issues amongst an increasing elderly population. This paper describes the design of a persuasive virtual coach that encourages seniors to walk more. In order to incorporate the user values and(More)
This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will(More)
We present a computational model of incremental grounding, including state updates and action selection. The model is inspired by corpus-based examples of overlapping utterances of several sorts, including backchannels and completions. The model has also been partially implemented within a virtual human system that includes incremental understanding, and(More)
With today’s technology, elderly users could be supported in living independently in their own homes for a prolonged period of time. Commercially available products enable remote monitoring of the state of the user, enhance social networks, and even support elderly citizens in their everyday routines. Whereas technology seems to be in place to support(More)
Awareness systems are a novel class of communication systems that enable people to be conscious of each other in a peripheral way. To better understand how people experience these systems over time, and how they blend in the user context, longitudinal field studies are needed. Although tangible awareness systems are considered to be more intimate and(More)
The use of sociable media for supporting social connectedness has been a serious subject of study for researchers and designers in recent years. Social connectedness is considered to be the momentary experience of belongingness and relatedness with others. Particular user groups may benefit from support in social connectedness, such as elderly or divorced(More)
This paper describes an investigation into how haptic output can be used to deliver guidance to pedestrians, who do not have any particular disability, to find their way to a particular destination indoors, e.g., a room in a hospital. A prototype device called GentleGuide was designed iteratively, resolving several design issues for the use of haptic(More)
Recent advances in incremental language processing for dialogue systems promise to enable more natural conversation between humans and computers. By analyzing the user’s utterance while it is still in progress, systems can provide more human-like overlapping and backchannel responses to convey their level of understanding and respond more quickly. In this(More)