Table 4 Parameter settings
Method | Parameter | Description | Value |
|---|---|---|---|
SGDCTH (Ours) | \(\delta_{{\widetilde{p}}}\) | Target product filtration threshold | 0.5–0.7 |
ϵ | Neighborhood radius threshold | 0.4–0.8 | |
\(\phi\) | Minimum number of sample points threshold | 2, 3, 4 | |
\(L\) | Number of GNN layers | 2 | |
\(lr\) | Learning rate | 0.01 | |
\(\lambda\) | Learnable parameter or fixed scalar | 0 | |
\(t\) | Number of epochs | 50 | |
\(d\) | Embedding dimension of nodes | 128 | |
GSDB | \(\delta_{p}\) | Target product filtration threshold | 0.1 |
\(\delta_{I}\) | Individual spamicity threshold | 0.43 | |
\(\delta_{G}\) | Group spamicity threshold | 0.57 | |
GSBC | \(\tau\) | Co-review time window size | 30 |
\(\delta\) | Edge weight threshold | 0.1 | |
\(MP\) | User-specified parameter | 1000 | |
\(\delta_{G}\) | Group spamicity threshold | 0.53 | |
GroupStrainer | \(\delta_{p}\) | Target product filtration threshold | 0.75 |
HoloScope | \(b\) | Scaling base | 32 |