Journal of Computer Applications ›› 2024, Vol. 44 ›› Issue (2): 460-468.DOI: 10.11772/j.issn.1001-9081.2023030267
Special Issue: 数据科学与技术
• Data science and technology • Previous Articles Next Articles
Tingting LI1, Junfeng CHU1,2(), Yanyan WANG3
Received:
2023-03-16
Revised:
2023-05-17
Accepted:
2023-05-19
Online:
2023-06-05
Published:
2024-02-10
Contact:
Junfeng CHU
About author:
LI Tingting, born in 1998, M. S. candidate. Her research interests include group recommendation, group consensus.Supported by:
通讯作者:
楚俊峰
作者简介:
李婷婷(1998—),女,重庆人,硕士研究生,主要研究方向:群体推荐、群体共识基金资助:
CLC Number:
Tingting LI, Junfeng CHU, Yanyan WANG. Group recommendation method based on implicit trust and group consensus[J]. Journal of Computer Applications, 2024, 44(2): 460-468.
李婷婷, 楚俊峰, 王燕燕. 基于隐式信任和群体共识的群体推荐方法[J]. 《计算机应用》唯一官方网站, 2024, 44(2): 460-468.
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URL: https://www.joca.cn/EN/10.11772/j.issn.1001-9081.2023030267
符号 | 描述 |
---|---|
用户集合、项目集合、群体集合 | |
某群体成员总数、某群体外有社交关系的用户总数 | |
系统用户 | |
用户 | |
用户 | |
用户 | |
用户 | |
用户 | |
项目 | |
用户 | |
用户 | |
用户 | |
用户 | |
群体和谐度(Group Harmony Degree, GHD) |
Tab. 1 Main symbols and meaning descriptions
符号 | 描述 |
---|---|
用户集合、项目集合、群体集合 | |
某群体成员总数、某群体外有社交关系的用户总数 | |
系统用户 | |
用户 | |
用户 | |
用户 | |
用户 | |
用户 | |
项目 | |
用户 | |
用户 | |
用户 | |
用户 | |
群体和谐度(Group Harmony Degree, GHD) |
成员 | 不同电影项目的评分 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
— | 2 | 4 | 3 | — | — | — | 3 | — | 2 | |
3 | 2 | — | 4 | — | 4 | 2 | — | — | 5 | |
4 | — | 3 | 5 | 3 | 3 | — | — | — | ||
3 | 4 | — | 5 | 2 | 4 | — | 4 | 2 | — | |
— | 2 | — | 3 | — | 5 | 4 | — | 4 | — |
Tab. 2 Initial member-movie rating
成员 | 不同电影项目的评分 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
— | 2 | 4 | 3 | — | — | — | 3 | — | 2 | |
3 | 2 | — | 4 | — | 4 | 2 | — | — | 5 | |
4 | — | 3 | 5 | 3 | 3 | — | — | — | ||
3 | 4 | — | 5 | 2 | 4 | — | 4 | 2 | — | |
— | 2 | — | 3 | — | 5 | 4 | — | 4 | — |
推荐排序 | ||||||||||
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1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
0.0 | ||||||||||
0.1 | ||||||||||
0.2 | ||||||||||
0.3 | ||||||||||
0.4 | ||||||||||
0.5 | ||||||||||
0.6 | ||||||||||
0.7 | ||||||||||
0.8 | ||||||||||
0.9 | ||||||||||
1.0 |
Tab. 3 Effect of α value on recommendation ranking
推荐排序 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
0.0 | ||||||||||
0.1 | ||||||||||
0.2 | ||||||||||
0.3 | ||||||||||
0.4 | ||||||||||
0.5 | ||||||||||
0.6 | ||||||||||
0.7 | ||||||||||
0.8 | ||||||||||
0.9 | ||||||||||
1.0 |
方案 | 推荐列表 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
不考虑共识 | ||||||||||
考虑共识 |
Tab. 4 Comparison of group recommendation rankings with and without consensus
方案 | 推荐列表 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
不考虑共识 | ||||||||||
考虑共识 |
机制 | |||||||
---|---|---|---|---|---|---|---|
传统共识 反馈机制 | 0.50 | 0.50 | 0.83 | 0.82 | 0.832 8 | 0.846 9 | 0.839 6 |
基于最大和谐度共识反馈机制 | 0.32 | 0.04 | 0.75 | 0.75 | 0.851 3 | 0.972 9 | 0.908 0 |
Tab. 5 Comparison of different consensus feedback mechanisms
机制 | |||||||
---|---|---|---|---|---|---|---|
传统共识 反馈机制 | 0.50 | 0.50 | 0.83 | 0.82 | 0.832 8 | 0.846 9 | 0.839 6 |
基于最大和谐度共识反馈机制 | 0.32 | 0.04 | 0.75 | 0.75 | 0.851 3 | 0.972 9 | 0.908 0 |
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