Update README.md

README.md

@@ -16,6 +16,10 @@ There are totally 4 json files:
 3. **disorder_label_dict.json**: For disorder granularity. There are totally 5569 ( 5568 abnormal and 1 noraml) label. There disorders are sorted in descending order based on the corresponding case number for evaluation.
 4. **icd10_label_dict.json**: For ICD-10-CM granularity. There are totally 931 ( 930 abnormal and 1 noraml) label. There disorders are sorted in descending order based on the corresponding case number for evaluation.
 
+"""
+Pay attention that: in RP3D_{train/test}.json file. A 'url' key corresponds to a 'Case', and there maybe multiple 'samples' in a 'Case' under the 'Samples' key
+"""
+
 ## About Model Checkpoint
 
 Please refer to [RP3D-DiagModel](https://huggingface.co/QiaoyuZheng/RP3D-DiagModel)