Reputation is a valuable asset in online social lives and it has drawn increased attention. How to evaluate user reputation in online rating systems is especially significant due to the existence of spamming attacks. To address this issue, so far, a variety of methods have been proposed, including network-based methods, quality-based methods and group-based ranking method. In this paper, we propose an iterative group-based ranking (IGR) method by introducing an iterative reputation-allocation process into the original group-based ranking (GR) method. More specifically, users with higher reputation have higher weights in dominating the corresponding group sizes. The reputation of users and the corresponding group sizes are iteratively updated until they become stable. Results on two real data sets suggest that the proposed IGR method has better performance and its robustness is considerably improved comparing with the original GR method. Our work highlights the positive role of users' grouping behavior towards a better reputation evaluation.
Gao and Zhou REF proposed an iterative group-based ranking method to evaluate user reputation that is based on the weighted sizes of the user rating groups in online rating systems.
Evaluating user reputation in online rating systems via an iterative group-based ranking method
Physica A: Statistical Mechanics and its Applications. 473 (2017): 546-560
Mathematics Computer Science Physics