This work investigates a model-based approach to understanding how user trust evolves in systems consisting of a supervising user and an autonomous agent. This model consists of a multivariate model for user trust, and a feedback connection between user and agent. Feedback information is termed assurance, which is also shown to consist of multiple aspects concerning the state of the autonomous ...

Trust is not only essential in our daily lives, its importance in virtual networks should not be underestimated either. For example, we only use information found on the web when we trust the source, and we do not give our credit card details on sites we distrust. With the advent of the semantic web [2], intelligent web agents will be taking over more and more human tasks. Therefore, there is a...

Sensor networks and Wireless Sensor Networks (WSN) are key components for the development of the Internet of Things. These networks are subject of two kinds of constraints. Adaptability by the mean of mutability and evolutivity, and constrained node resources such as energy consumption, computational complexity or memory usage. In this context, none of the existing protocols and models allows r...

It is a common and useful task in a web of trust to evaluate the trust value between two nodes using intermediate nodes. This technique is widely used when the source node has no experience of direct interaction with the target node, or the direct trust is not reliable enough by itself. If trust is used to support decision-making, it is important to have not only an accurate estimate of trust, ...

The management of trust and quality in decentralized systems has been recognized as a key research area over recent years. In this paper, we propose a probabilistic computational approach to enable a peer in the system to model and estimate the quality and behaviors of the others subjectively according to its own preferences. Our solution is based on the use of graphical models to represent the...

We propose a method for constructing Dempster-Shafer belief functions modeling the trust of a given agent (the evaluator) in another (the target) by combining statistical information concerning the past behaviour of the target and arguments concerning the target’s expected behaviour. These arguments are built from current and past contracts between evaluator and target. We prove that our method...

context: management of health care organizations based on employee's mutual trust will increase the improvement in functions and tasks. aims: the present study was performed to investigate the relationship between organizational trust and the nurse administrators' productivity in educational health centers of in the health-education centers of isfahan university of medical sciences. settings an...

The Advanced Systems Group (ASG) targets applied research with evaluation in real-life settings. The current main theme of the group lies in improving the mobile users’ experience with context-aware computing and communicating devices. After researching theoretical and computational models of trust based on established research from many other disciplines such as sociology and economics, could ...