Update README with category ID to class name mapping

README.md

@@ -21,41 +21,40 @@ A refined COCO-format dataset for detecting US Dollar currency and classifying w
 
 ## Dataset Summary
 
-- **Total Images**: 7,360
+- **Total Images**: 3,618
 - **Total Annotations**: 3,746
-- **Format**: COCO (object detection)
+- **Format**: COCO + HuggingFace JSONL
 - **Classes**: 24 (denominations × front/back × authentic/counterfeit)
 - **Classification Accuracy**: 100% (all Front/Back classified)
 
 | Split | Images | Annotations |
 |-------|--------|-------------|
-| Train | 5,290 | 2,738 |
-| Valid | 1,221 | 627 |
-| Test | 849 | 381 |
-
-## Classes (24 total)
+| Train | 2,671 | 2,738 |
+| Valid | 597 | 627 |
+| Test | 350 | 381 |
+
+## Class Mapping (24 classes)
+
+| ID | Class Name | ID | Class Name |
+|----|------------|-----|------------|
+| 0 | 100USD-Back | 12 | Counterfeit 100 USD Back |
+| 1 | 100USD-Front | 13 | Counterfeit 100 USD Front |
+| 2 | 10USD-Back | 14 | Counterfeit 10USD Front |
+| 3 | 10USD-Front | 15 | Counterfeit 1USD Front |
+| 4 | 1USD-Back | 16 | Counterfeit 50USD Front |
+| 5 | 1USD-Front | 17 | Counterfeit 10USD Back |
+| 6 | 20USD-Back | 18 | Counterfeit 5USD Back |
+| 7 | 20USD-Front | 19 | Counterfeit 20USD Back |
+| 8 | 50USD-Back | 20 | Counterfeit 20USD Front |
+| 9 | 50USD-Front | 21 | Counterfeit 1USD Back |
+| 10 | 5USD-Back | 22 | Counterfeit 5USD Front |
+| 11 | 5USD-Front | 23 | Counterfeit 50USD Back |
 
 **Breakdown:**
-- **12 Regular USD classes**: Front/Back variants for $1, $5, $10, $20, $50, $100
-- **12 Counterfeit USD classes**: Front/Back variants for $1, $5, $10, $20, $50, $100
-
-### Regular USD (12 classes)
-- `100USD-Front`, `100USD-Back`
-- `50USD-Front`, `50USD-Back`
-- `20USD-Front`, `20USD-Back`
-- `10USD-Front`, `10USD-Back`
-- `5USD-Front`, `5USD-Back`
-- `1USD-Front`, `1USD-Back`
-
-### Counterfeit USD (12 classes)
-- `Counterfeit 100 USD Front`, `Counterfeit 100 USD Back`
-- `Counterfeit 50USD Front`, `Counterfeit 50USD Back`
-- `Counterfeit 20USD Front`, `Counterfeit 20USD Back`
-- `Counterfeit 10USD Front`, `Counterfeit 10USD Back`
-- `Counterfeit 5USD Front`, `Counterfeit 5USD Back`
-- `Counterfeit 1USD Front`, `Counterfeit 1USD Back`
-
-**Note**: All $2 bills (289) and generic annotations (13) removed - only Front/Back classified data remains.
+- **12 Regular USD**: Front/Back for $1, $5, $10, $20, $50, $100
+- **12 Counterfeit USD**: Front/Back for $1, $5, $10, $20, $50, $100
+
+**Note**: All $2 bills and generic annotations removed - only Front/Back classified data remains.
 
 ## Annotation Refinement