# Task 2.3 Paired Validation

## Table 5

| pair_id | variant | target_channel | delta_median | IQR | direction_agreement | n_scenes |
|---|---|---|---|---|---|---|
| P01 | pgsr | opacity_net_effect | -0.0950 | 0.1429 | 1.000 | 31 |
| P02 | erankgs | coverage_error_fraction | -0.1176 | 0.2684 | 1.000 | 31 |
| P03 | lightgaussian | opacity_pathology_rate | 0.0317 | 0.0273 | 0.097 | 31 |
| P04 | steepgs | opacity_net_effect | -0.0292 | 0.0417 | 0.839 | 31 |
| P05 | ges | coverage_error_fraction | -0.0317 | 0.0945 | N/A | 31 |

## Per-Pair Interpretation

### P01 — vanilla_3dgs vs pgsr
- 目标通道: `opacity_net_effect`，预期方向: 降低
- delta median = -0.0950，direction_agreement = 1.0
- **与预期一致**

### P02 — vanilla_3dgs vs erankgs
- 目标通道: `coverage_error_fraction`，预期方向: 降低
- delta median = -0.1176，direction_agreement = 1.0
- **与预期一致**

### P03 — vanilla_3dgs vs lightgaussian
- 目标通道: `opacity_pathology_rate`，预期方向: 降低
- delta median = 0.0317，direction_agreement = 0.0967741935483871
- **与预期不符**

### P04 — vanilla_3dgs vs steepgs
- 目标通道: `opacity_net_effect`，预期方向: 降低
- delta median = -0.0292，direction_agreement = 0.8387096774193549
- **与预期一致**

### P05 — vanilla_3dgs vs ges
- 目标通道: `coverage_error_fraction`，预期方向: 中性
- delta median = -0.0317，direction_agreement = N/A
- **与预期一致**