Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2017, Vol. 53 ›› Issue (2): 262-272.DOI: 10.13209/j.0479-8023.2017.033
• Orginal Article • Previous Articles Next Articles
Chuanming YU1, Bolin FENG1, Yuheng ZUO1, Baiyun CHEN1, Lu AN2,†(
)
Received:2016-07-22
Revised:2016-09-24
Online:2017-03-20
Published:2017-03-20
Contact:
Lu AN
余传明1, 冯博琳1, 左宇恒1, 陈百云1, 安璐2,†()
通讯作者:
安璐
基金资助:CLC Number:
Chuanming YU, Bolin FENG, Yuheng ZUO, Baiyun CHEN, Lu AN. An Individual-Group-Merchant Relation Model for Identifying Online Fake Reviews[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2017, 53(2): 262-272.
余传明, 冯博琳, 左宇恒, 陈百云, 安璐. 基于个人-群体-商户关系模型的虚假评论识别研究[J]. 北京大学学报自然科学版, 2017, 53(2): 262-272.
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URL: https://xbna.pku.edu.cn/EN/10.13209/j.0479-8023.2017.033
Fig. 1 Iterative process of fake review identification
Fig. 2 Frequency distribution of user-account number
Fig. 3 Frequency distribution of user registration window
Fig. 4 Frequency distribution of user-review number
Fig. 5 Frequency distribution of review numbers by a user toward a merchant
Fig. 6 Frequency distribution of U-M Review per Merchant Time Window
| 指标 | 估值 | 标准误差 | z值 | Pr(>|z|) |
|---|---|---|---|---|
| Intercept | -3.5174 | 0.5886 | -5.976 | 2.29×10-9*** |
| RUR | -5.4879 | 1.9562 | -2.805 | 5.03×10-3** |
| URW | 2.5755 | 1.2074 | 2.133 | 3.291×10-2* |
| RR | 50.6619 | 11.9434 | 4.424 | 2.22×10-5*** |
| RCS | 2.3308 | 1.0796 | 2.159 | 3.085×10-2* |
| RTW | 3.5696 | 0.8075 | 4.421 | 9.85×10-6*** |
Table 1 Individual behavior indicators’ evaluation
| 指标 | 估值 | 标准误差 | z值 | Pr(>|z|) |
|---|---|---|---|---|
| Intercept | -3.5174 | 0.5886 | -5.976 | 2.29×10-9*** |
| RUR | -5.4879 | 1.9562 | -2.805 | 5.03×10-3** |
| URW | 2.5755 | 1.2074 | 2.133 | 3.291×10-2* |
| RR | 50.6619 | 11.9434 | 4.424 | 2.22×10-5*** |
| RCS | 2.3308 | 1.0796 | 2.159 | 3.085×10-2* |
| RTW | 3.5696 | 0.8075 | 4.421 | 9.85×10-6*** |
| 象 | k | P | R | F1 |
|---|---|---|---|---|
| 个人 | 90 | 0.7992 | 0.7543 | 0.7737 |
| 92 | 0.8044 | 0.7719 | 0.7863 | |
| 4 | 0.8103 | 0.7894 | 0.7989 | |
| 6 | 0.8168 | 0.8070 | 0.8116 | |
| 8 | 0.8245 | 0.8245 | 0.8245 | |
| 00 | 0.8152 | 0.8245 | 0.8195 | |
| 02 | 0.8052 | 0.8245 | 0.8137 | |
| 04 | 0.8165 | 0.8421 | 0.8262 | |
| 商家 | 30 | 0.5471 | 0.4909 | 0.5094 |
| 32 | 0.5690 | 0.5272 | 0.5424 | |
| 34 | 0.5907 | 0.5636 | 0.5744 | |
| 36 | 0.5774 | 0.5636 | 0.5698 | |
| 38 | 0.5636 | 0.5636 | 0.5636 | |
| 40 | 0.5866 | 0.6 | 0.5926 | |
| 42 | 0.5721 | 0.6 | 0.5833 | |
| 44 | 0.5553 | 0.6 | 0.5717 | |
| 群组 | 66 | 0.9786 | 0.8292 | 0.8874 |
| 68 | 0.9630 | 0.8292 | 0.8863 | |
| 70 | 0.9637 | 0.8536 | 0.9010 | |
| 72 | 0.9644 | 0.8780 | 0.9154 | |
| 74 | 0.9654 | 0.9024 | 0.9298 | |
| 76 | 0.9668 | 0.9268 | 0.9441 | |
| 78 | 0.9505 | 0.9268 | 0.9385 | |
| 80 | 0.9512 | 0.9512 | 0.9512 |
Table 2 Experimental results of the IGMRM model
| 象 | k | P | R | F1 |
|---|---|---|---|---|
| 个人 | 90 | 0.7992 | 0.7543 | 0.7737 |
| 92 | 0.8044 | 0.7719 | 0.7863 | |
| 4 | 0.8103 | 0.7894 | 0.7989 | |
| 6 | 0.8168 | 0.8070 | 0.8116 | |
| 8 | 0.8245 | 0.8245 | 0.8245 | |
| 00 | 0.8152 | 0.8245 | 0.8195 | |
| 02 | 0.8052 | 0.8245 | 0.8137 | |
| 04 | 0.8165 | 0.8421 | 0.8262 | |
| 商家 | 30 | 0.5471 | 0.4909 | 0.5094 |
| 32 | 0.5690 | 0.5272 | 0.5424 | |
| 34 | 0.5907 | 0.5636 | 0.5744 | |
| 36 | 0.5774 | 0.5636 | 0.5698 | |
| 38 | 0.5636 | 0.5636 | 0.5636 | |
| 40 | 0.5866 | 0.6 | 0.5926 | |
| 42 | 0.5721 | 0.6 | 0.5833 | |
| 44 | 0.5553 | 0.6 | 0.5717 | |
| 群组 | 66 | 0.9786 | 0.8292 | 0.8874 |
| 68 | 0.9630 | 0.8292 | 0.8863 | |
| 70 | 0.9637 | 0.8536 | 0.9010 | |
| 72 | 0.9644 | 0.8780 | 0.9154 | |
| 74 | 0.9654 | 0.9024 | 0.9298 | |
| 76 | 0.9668 | 0.9268 | 0.9441 | |
| 78 | 0.9505 | 0.9268 | 0.9385 | |
| 80 | 0.9512 | 0.9512 | 0.9512 |
| 商家编号 | f(m) | 排名 |
|---|---|---|
| 12**73 | 7.461918×10-1 | 1 |
| 7**09 | 5.370122×10-1 | 2 |
| 14**68 | 3.934663×10-1 | 3 |
| 10**30 | 2.677272×10-5 | 4 |
| 7**72 | 1.714189×10-5 | 5 |
| 7**96 | 1.453285×10-5 | 6 |
| 12**22 | 1.339835×10-5 | 7 |
| 12**29 | 1.184025×10-5 | 8 |
| 12**76 | 1.018929×10-5 | 9 |
| 10**92 | 8.861665×10-6 | 10 |
Table 3 Merchants’ fake degree rank
| 商家编号 | f(m) | 排名 |
|---|---|---|
| 12**73 | 7.461918×10-1 | 1 |
| 7**09 | 5.370122×10-1 | 2 |
| 14**68 | 3.934663×10-1 | 3 |
| 10**30 | 2.677272×10-5 | 4 |
| 7**72 | 1.714189×10-5 | 5 |
| 7**96 | 1.453285×10-5 | 6 |
| 12**22 | 1.339835×10-5 | 7 |
| 12**29 | 1.184025×10-5 | 8 |
| 12**76 | 1.018929×10-5 | 9 |
| 10**92 | 8.861665×10-6 | 10 |
| 个人编号(IP) | f(u) | 排名 |
|---|---|---|
| 111.*. *.140 | 0.379819 | 1 |
| 222.*.*.179 | 0.3325661 | 2 |
| 122.*.*.223 | 0.3296828 | 3 |
| 42.*.*.160 | 0.3249425 | 4 |
| 42.*.*.100 | 0.3037860 | 5 |
| 222.*.*.110 | 0.2878484 | 6 |
| 42.*.*.74 | 0.2876034 | 7 |
| 125.*.*.19 | 0.2819457 | 8 |
| 42.*.*.246 | 0.2724028 | 9 |
| 61.*.*.244 | 0.2243581 | 10 |
Table 4 Users’ fake degree rank
| 个人编号(IP) | f(u) | 排名 |
|---|---|---|
| 111.*. *.140 | 0.379819 | 1 |
| 222.*.*.179 | 0.3325661 | 2 |
| 122.*.*.223 | 0.3296828 | 3 |
| 42.*.*.160 | 0.3249425 | 4 |
| 42.*.*.100 | 0.3037860 | 5 |
| 222.*.*.110 | 0.2878484 | 6 |
| 42.*.*.74 | 0.2876034 | 7 |
| 125.*.*.19 | 0.2819457 | 8 |
| 42.*.*.246 | 0.2724028 | 9 |
| 61.*.*.244 | 0.2243581 | 10 |
| 群组编号(IP) | f (g) | 排名 |
|---|---|---|
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246993 | 1 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246467 | 2 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246448 | 3 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.246""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245663 | 4 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245570 | 5 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.246""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1245103 | 6 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.100""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245025 | 7 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1245014 | 8 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1244561 | 9 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""58.*.*.60""61.*.*.244" | 0.1244181 | 10 |
Table 5 Groups’ fake degree rank
| 群组编号(IP) | f (g) | 排名 |
|---|---|---|
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246993 | 1 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246467 | 2 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60""61.*.*.244" | 0.1246448 | 3 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.246""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245663 | 4 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245570 | 5 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.246""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1245103 | 6 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.100""42.*.*.160""42.*.*.74""61.*.*.244" | 0.1245025 | 7 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1245014 | 8 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.246""42.*.*.100""42.*.*.160""42.*.*.74""58.*.*.60" | 0.1244561 | 9 |
| "111.*.*.140" "122.*.*.223" "125.*.*.19""222.*.*.179""222.*.*.110""42.*.*.38""42.*.*.100""42.*.*.160""58.*.*.60""61.*.*.244" | 0.1244181 | 10 |
Fig. 7 Influence of threshold tuning to the experimental results
| 模型 | P | R | F |
|---|---|---|---|
| LR | 0.4555 | 0.7857 | 0.5263 |
| KNN | 0.7481 | 0.7926 | 0.7675 |
| IGMRM | 0.8165 | 0.8421 | 0.8262 |
Table 6 Comparision among three methods
| 模型 | P | R | F |
|---|---|---|---|
| LR | 0.4555 | 0.7857 | 0.5263 |
| KNN | 0.7481 | 0.7926 | 0.7675 |
| IGMRM | 0.8165 | 0.8421 | 0.8262 |
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