A collusion mitigation scheme for reputation systems

M. Niknafs; S. Dorri Nogoorani; R. Jalili

Volume 7, Issue 2 , July 2015, , Pages 151-166


  Reputation management systems are in wide-spread use to regulate collaborations in cooperative systems. Collusion is one of the most destructive malicious behaviors in which colluders seek to affect a reputation management system in an unfair manner. Many reputation systems are vulnerable to collusion, ...  Read More

Prediction of user's trustworthiness in web-based social networks via text mining

H. Mohammadhassanzadeh; H. R. Shahriari

Volume 5, Issue 2 , July 2013, , Pages 171-187


  In Social networks, users need a proper estimation of trust in others to be able to initialize reliable relationships. Some trust evaluation mechanisms have been offered, which use direct ratings to calculate or propagate trust values. However, in some web-based social networks where users only have ...  Read More