| --- |
| license: cc-by-sa-4.0 |
| task_categories: |
| - image-classification |
| tags: |
| - medical |
| - cystoscopy |
| - bladder-cancer |
| size_categories: |
| - 1K<n<10K |
| --- |
| |
| # Dataset G — Cystoscopy Lesion Benchmark (Domain-Shift Protocol) |
|
|
| Frame-level cystoscopy dataset for the 3-class task **MT / NML / NROI** |
| (malignant tumor / non-malignant lesion / non-ROI), built for the |
| domain-shift benchmark protocol: **train = Sources B+C, test = Source D (TURBT)**. |
|
|
| ## Splits (patient-disjoint, frozen) |
| - `train`: 7,792 frames / 127 patients (Sources B+C) |
| - `val`: 1,504 frames / 28 patients (hardcoded VAL_PATIENTS, greedy-search selected) |
| - `test`: 1,754 frames / 22 patients (**Source D only** — frozen forever for the domain-shift track) |
| |
| Test class support: MT 1,116 / NML 134 / NROI 504. Test contains 1,433 WLI + 321 NBI frames; train has no NBI. |
| |
| ## Columns |
| `image` (raw letterbox frames), `cancer_label`, `grade_label`, |
| `subclass_label`, `source_dataset`, `original_filename`, `patient_id`, |
| `imaging_type` (0=WLI, 1=NBI, 2=BLC — inferred), `target3` |
| (0=MT, 1=NML, 2=NROI), `track_id`, `lesion_id`, `split`, `cv_fold` |
| (frozen 5-fold StratifiedGroupKFold, seed 15; val frames carry -1). |
|
|
| ## License |
| Mixture of CC BY 4.0 (C: CystoDS; D: Lazo) and CC BY-SA 4.0 (B) sources; |
| the dataset ships as **CC BY-SA 4.0**. |
|
|
| ## Intended use |
| Pre-registered domain-shift benchmark: the test split must remain frozen; |
| do not train on it. Lesion-level evaluation via `lesion_id` is recommended. |
|
|
