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| Index | Train | Test | MSMT17 | |
|---|---|---|---|---|
| Strategy | Final feature | mAP (%) | Rank-1 (%) | |
| (a) | Single-loss | Add | 64.1 | 82.4 |
| (b) | Single-loss | Concat | 64.6 | 83.0 |
| (c) | Single-loss | Multiply | 56.6 | 75.4 |
| (d1) | Duplicate-loss | Add | 64.2 | 81.8 |
| (d2) | Duplicate-loss | Concat | 66.9 | 84.5 |
