Privacy and user trust in context-aware systems

Context-aware systems (CAS) that collect personal information are a general trend. This leads to several privacy considerations, which we outline in this paper. We present as use-case the SWELL system, which collects information from various contextual sensors to provide support for well-being at work. We address privacy from two perspectives: 1...

The Swell knowledge work dataset for stress and user modeling research

This paper describes the new multimodal SWELL knowl- edge work (SWELL-KW) dataset for research on stress and user modeling. The dataset was collected in an experiment, in which 25 people performed typical knowledge work (writing reports, making presentations, reading e-mail, searching for information). We manipulated their working conditions...

Using sensors in the office to support knowledge workers with self-management of well-being

Automated Sign Language

This report provides an overview of a Proof-of-Concept for a signing avatar service. The Proof of Concept was created by TNO in an assignment from the Research and Development department of the Directorate Distribution and Broadcasting of the Netherlands Public Broadcasting Organisation (Directie Distributie en Uitzending, Nederlandse Publieke...

Unobtrusive Monitoring of Knowledge Workers for Stress Self-regulation

In our connected workplaces it can be hard to work calm and focused. In a simulated work environment we manipulated the stressors time pressure and email interruptions. We found effects on subjective experience and working behavior. Initial results indicate that the sensor data that we collected is suitable for user state modeling in stress...

Recall Oriented Search on the Web using Semantic Annotations

Web search engines are optimized for early precision, which makes it difficult to perform recall oriented tasks with them. In this article, we propose several ways to leverage semantic annotations and, thereby, increase the efficiency of recall oriented search tasks, with a focus on forensic investigation. Semantic annotations, such as temporal...

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Towards a social media-based model of trust and its application

In this paper we describe the development of a model for measuring consumer trust in certain topics on the basis of social media. Specifically, we propose a model for trust that takes into account both textually expressed sentiment and source authority, and illustrate it on a specific case: the iCloud cloud computing service of Apple and its...

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Unobtrusively Measuring Stress and Workload of Knowledge Workers

Imagine a typical working day of a knowledge worker, i.e. someone who is predominantly concerned with interpreting and generating information. Bob gets into the office at 9, starts up his computer, takes a look at his mails and calendar and plans what things he has to do this day. Then he starts working on one of the important tasks that have to...

Real-time task recognition based on knowledge workers’ computer activities

Motivation – Supporting knowledge workers in their self-management by providing them overviews of performed tasks. Research approach – Computer interaction data of knowledge workers was logged during their work. For each user different classifiers were trained and compared on their performance on recognizing 12 specified tasks. Findings/Design –...

New Media Services Need Interoperability and Portability

For telephone services, service providers have arranged that users from different providers can communicate with each other. Also, when changing from one provider to another, it is possible to retain your telephone number. These things are possible because of `interconnection' and `number portability'. Interconnection and (number) portability...

Simple & Secure: Attitude and behaviour towards security and usability in internet products and services at home

This paper is the result of research on the security perception of users in ICT services and equipment. We analyze the rationale of users to have an interest in security and to decide to change security parameters of equipment and services. We focus on the home environment, where more and more devices are (inter)connected to form a complex end...

Method and system for speech intelligibility measurement of an audio transmission system