Trusting Evaluation by Social Reputation

The increasing use of Internet for human real world activities such as e-commerce, exchange of information, advertising and several other service make the question of trust a critical issue. Today, everyone pushes information inside the net so is not easy to base trust on some, centralized authorities. many people is investigating how trust can be obtained - in some cases inspiring their investigation on social behavior - starting from some judges one may have on some others. This paper analyzes this matter, modelling trust relationship by a oriented graph and discussing some metrics useful to calculate reputation of a node based on others trust him/her.

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