Record visual conversion provenance and exclusions

provenance.json

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+{
+  "source": "jxu124/refcocog",
+  "revision": "55319436ad54b9480cefda6b9d64397de92456dd",
+  "format_version": 1,
+  "splits": {
+    "train": {
+      "rows": 8526,
+      "questions": 100000
+    },
+    "validation": {
+      "rows": 2566,
+      "questions": 24527
+    },
+    "test": {
+      "rows": 3980,
+      "questions": 30903
+    }
+  },
+  "conversion_sha256": "cd758bd4b55eb37a16764edd415c1f46447b28f5ee3e5692142c9b91fdbadc58",
+  "excluded_rows": 1726,
+  "license": "other",
+  "license_url": "https://cocodataset.org/#termsofuse",
+  "mirror": "tasksource/refcoco-grounding",
+  "sources": {
+    "jxu124/refcocog": "55319436ad54b9480cefda6b9d64397de92456dd",
+    "jxu124/refcoco": "9fba8200c5326e996f789191f095bd464ef1d09e",
+    "jxu124/refcocoplus": "12e20b0b6039fbf656e89e2f26597e84c1037847",
+    "Untitled111/refcoco-train2014-assets": "5daa32cfe87ea355fab400b5ec5a8a9bb476ffd2"
+  },
+  "max_train_questions": 100000,
+  "seed": 0,
+  "selection": "stable hash order of source image groups; cap counts QAs, not images",
+  "excluded_by_reason": {
+    "cross_variant_heldout_image": 1453,
+    "no_distinct_native_distractor": 25,
+    "ambiguous_duplicate_instruction": 248
+  },
+  "conversion_file_sha256": "685d07a04009ac6eac26950ba136702f2843e748e823c3d867e3237b35cf585c",
+  "parquet_sha256": {
+    "test.parquet": "88a2a24e44d2fb3060f6b11c09790c09c5721f9ef166862919fa0f2d7259ef6f",
+    "train.parquet": "273ae90ed52844595d30121d5b526c132f075d2789ac63b6dcb70781f25b335e",
+    "validation.parquet": "7e1fe337f9a3c592008536c7a93d237e1d81c0e7419b53509cd54ddc804fd06b"
+  },
+  "representation": "canonical grouped MC; original images, native candidate boxes, no synthetic negatives",
+  "choice_config": {
+    "max_options": 8,
+    "min_center_distance": 0.03,
+    "units": "0\u20131000"
+  },
+  "annotation_archive": {
+    "url": "https://s3.amazonaws.com/images.cocodataset.org/annotations/annotations_trainval2014.zip",
+    "sha256": "031296bbc80c45a1d1f76bf9a90ead27e94e99ec629208449507a4917a3bf009"
+  },
+  "split_policy": "native test subsets merged; held-out images reserved by both COCO ID and encoded-image SHA256 across variants"
+}