Update README.md

README.md

@@ -16,14 +16,14 @@ tags:
 - paper-implementation
 
 results:
- Metric | Result |
- mAP@0.5 | 63% |
- RPN Recall @ IoU 0.5 | 83% |
+ - Metric Result
+ - mAP@0.5  63% 
+ - RPN Recall @ IoU 0.5 - 83%
 
 Known_Deviations(expected affect on mAP):
- -ResNet-50 instead of ResNet-101 | Compute constraint | Weaker features than ResNet-101, likely costing several mAP points — probably felt most on small/textured classes like `bottle`/`pottedplant`, this project's weakest. Not isolated by a ResNet-101 run. |
- -Batch size 2 instead of 1 | GPU throughput | Paper's lr schedule (per-image, batch size 1) reused unscaled, changing gradient noise per step. Not isolated. | 
- -No horizontal flip augmentation | Not implemented | Paper's VOC recipe uses flipping as a free 2× augmentation; skipping it likely costs some mAP, more on sparser classes. Not isolated. |
- -BatchNorm frozen from Step 2 onward | Batch size 2 is too small for stable BN statistics — standard practice, not ad hoc | Expected neutral-to-beneficial vs. unfrozen (paper's VGG16 has no BN to compare against). Step 1 is the exception — its backbone trains with BN unfrozen. |
+ -ResNet-50 instead of ResNet-101 due to compute constraint resulting weaker features than ResNet-101, likely costing several mAP points — probably felt most on small/textured classes like `bottle`/`pottedplant`, this project's weakest. Not isolated by a ResNet-101 run.
+ -Batch size 2 instead of 1, GPU throughput, Paper's lr schedule (per-image, batch size 1) reused unscaled, changing gradient noise per step. Not isolated.
+ -No horizontal flip augmentation, not implemented, Paper's VOC recipe uses flipping as a free 2× augmentation; skipping it likely costs some mAP, more on sparser classes. Not isolated.
+ -BatchNorm frozen from Step 2 onward, Batch size 2 is too small for stable BN statistics — standard practice, not ad hoc, Expected neutral-to-beneficial vs. unfrozen (paper's VGG16 has no BN to compare against). Step 1 is the exception — its backbone trains with BN unfrozen.
 
 ---