Effect of the initial configuration for user-object reputation systems | |
Wu, Ying-Ying1; Guo, Qiang1; Liu, Jian-Guo2; Zhang, Yi-Cheng3 | |
刊名 | PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
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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. |
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