Effect of the initial configuration for user-object reputation systems

doi:10.1016/j.physa.2018.02.147

CORC > 上海财经大学 > 上海财经大学

	Effect of the initial configuration for user-object reputation systems
	Wu, Ying-Ying 1; Guo, Qiang 1; Liu, Jian-Guo 2; Zhang, Yi-Cheng 3
刊名	PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
	2018-07-15
卷号	502 页码:288-294
关键词	Reputation Initial configuration User-object reputation systems
ISSN号	0378-4371
DOI	10.1016/j.physa.2018.02.147
英文摘要	Identifying the user reputation accurately is significant for the online social systems. For different fair rating parameter q, by changing the parameter values alpha and beta of the beta probability distribution (RBPD) for ranking online user reputation, we investigate the effect of the initial configuration of the RBPD method for the online user ranking performance. Experimental results for the Netflix and MovieLens data sets show that when the parameter q equals to 0.8 and 0.9, the accuracy value AUC would increase about 4.5% and 3.5% for the Netflix data set, while the AUC value increases about 1.5% for the MovieLens data set when the parameter q is 0.9. Furthermore, we investigate the evolution characteristics of the AUC value for different alpha and beta, and find that as the rating records increase, the AUC value increases about 0.2 and 0.16 for the Netflix and MovieLens data sets, indicating that online users' reputations will increase as they rate more and more objects. (C) 2018 Elsevier B.V. All rights reserved.
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000432513200025
内容类型	期刊论文
源URL	[http://10.2.47.112/handle/2XS4QKH4/572]
专题	上海财经大学
通讯作者	Liu, Jian-Guo
作者单位	1.Univ Shanghai Sci & Technol, Res Ctr Complex Syst Sci, Shanghai 200093, Peoples R China; 2.Shanghai Univ Finance & Econ, Data Sci & Cloud Serv Res Ctr, Shanghai 200433, Peoples R China; 3.Fribourg Univ, Dept Phys, CH-1700 Fribourg, Switzerland
推荐引用方式 GB/T 7714	Wu, Ying-Ying,Guo, Qiang,Liu, Jian-Guo,et al. Effect of the initial configuration for user-object reputation systems[J]. PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,2018,502:288-294.
APA	Wu, Ying-Ying,Guo, Qiang,Liu, Jian-Guo,&Zhang, Yi-Cheng.(2018).Effect of the initial configuration for user-object reputation systems.PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS,502,288-294.
MLA	Wu, Ying-Ying,et al."Effect of the initial configuration for user-object reputation systems".PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS 502(2018):288-294.