Section: New Results

Trustworthy Collaboration

Participants : Claudia-Lavinia Ignat, Hoang Long Nguyen, Olivier Perrin.

In order to test user acceptance of a collaboration model based on automatic trust assessment, we designed an experiment relying on the trust game. In the trust game money exchange is entirely attributable to the existence of trust between users. Our experimental design [7] tested variations of the trust game: with and without showing the partner identity and with and without explicit computation of partner trust values based on the computational trust model we previously proposed. We organized a user study with 30 participants that confirmed that the availability of this trust metric improves user cooperation and that it predicts participants future behavior. We showed that trust score availability has the same effect as an identity to improve cooperation. Our study suggests that trust score could function as an enhancement or even replacement of traditional identity systems and has the advantage of scalability.

In the scope of Hoang Long Nguyen's PhD thesis, we proposed the architecture of ÔBlock, an open ecosystem for quick development of transparent applications based on consortium blockchain.