add dataset card

README.md

@@ -1,45 +1,65 @@
 ---
-dataset_info:
-  features:
-  - name: stem
-    dtype: string
-  - name: family
-    dtype: string
-  - name: difficulty
-    dtype: string
-  - name: base_plane
-    dtype: string
-  - name: split
-    dtype: string
-  - name: feature_tags
-    dtype: string
-  - name: feature_count
-    dtype: int64
-  - name: ops_used
-    dtype: string
-  - name: gt_code
-    dtype: string
-  - name: composite_png
-    dtype: image
-  splits:
-  - name: test_iid
-    num_bytes: 5985497
-    num_examples: 258
-  - name: test_ood_family
-    num_bytes: 6942475
-    num_examples: 268
-  - name: test_ood_plane
-    num_bytes: 10288487
-    num_examples: 468
-  download_size: 22235644
-  dataset_size: 23216459
-configs:
-- config_name: default
-  data_files:
-  - split: test_iid
-    path: data/test_iid-*
-  - split: test_ood_family
-    path: data/test_ood_family-*
-  - split: test_ood_plane
-    path: data/test_ood_plane-*
+license: cc-by-4.0
+task_categories:
+- image-to-3d
+- text-generation
+tags:
+- cad
+- cadquery
+- synthetic
+- benchmark
+size_categories:
+- 1K<n<10K
 ---
+
+# CAD Synthesis Benchmark — test_bench
+
+Small-scale benchmark for **image → CadQuery code** generation.
+
+**Task**: Given rendered views of an industrial part, generate CadQuery code that reproduces it.
+
+**Evaluation**: Execute code → export STEP → compute IoU vs GT STEP.
+
+## Splits
+
+| Split | Families | Description |
+|-------|----------|-------------|
+| `test-iid` | 54 train families, XY plane | In-distribution test |
+| `test-ood-family` | 19 held-out families | Family generalization |
+| `test-ood-plane` | 54 train families, XZ/YZ | View generalization |
+
+OOD families: `bellows`, `worm_screw`, `torus_link`, `impeller`, `propeller`,
+`chair`, `table`, `snap_clip`, `waffle_plate`, `wire_grid`, `mesh_panel`,
+`t_pipe_fitting`, `pipe_elbow`, `duct_elbow`, `dome_cap`, `capsule`,
+`coil_spring`, `bucket`, `nozzle`
+
+## Sample Fields (bench_manifest.jsonl)
+
+```json
+{
+  "stem": "synth_handwheel_000042_s9999",
+  "family": "handwheel",
+  "difficulty": "easy",
+  "base_plane": "XY",
+  "split": "test-iid",
+  "feature_tags": {"has_hole": true, "has_fillet": false, "has_chamfer": false},
+  "feature_count": 1,
+  "ops_used": ["circle", "extrude", "union", "cut"],
+  "gt_code_path": "data/test-iid/synth_handwheel_000042_s9999/code.py",
+  "gt_step_path": "data/test-iid/synth_handwheel_000042_s9999/gen.step",
+  "composite_png": "data/test-iid/synth_handwheel_000042_s9999/views/composite.png"
+}
+```
+
+## Metrics
+
+- `exec_ok`: code executes (0/1)
+- `iou`: voxel IoU vs GT STEP
+- `feature_f1`: F1 of feature_tags (hole/fillet/chamfer/slot)
+- `detail_score`: `0.4 × iou + 0.6 × feature_f1` (primary ranking metric)
+
+## Generation
+
+- Pipeline: `cad_synth` (73 families, parametric, multi-plane)
+- Seed: 9999 (held out from training seed 1337)
+- Rendered: 4-view normalized PNGs + 2×2 composite