Aggregating partial, local evaluations to achieve global ranking
Laureti, PaoloDepartment of Physics, University of Fribourg, Switzerland
Moret, LionelDepartment of Physics, University of Fribourg, Switzerland
Zhang, Yi-ChengDepartment of Physics, University of Fribourg, Switzerland
11.09.2004
Published in:
Physica A: Statistical Mechanics and its Applications. - 2005, vol. 345, no. 3-4, p. 705-712
English
We analyze some voting models mimicking online evaluation systems intended to reduce the information overload. The minimum number of operations needed for a system to be effective is analytically estimated. When herding effects are present, linear preferential attachment marks a transition between trustful and biased reputations.