| { | |
| "name": "NLVR2", | |
| "release_date": "2026-05-25", | |
| "subsets": { | |
| "main": { | |
| "language": [ | |
| "en" | |
| ], | |
| "modalities": [ | |
| "multi_image_start" | |
| ], | |
| "task_type": "yes_no_qa", | |
| "score_pipeline": [ | |
| "exact-match", | |
| "rule-match" | |
| ], | |
| "score_protocol": { | |
| "reference": "official@github.com/lil-lab/nlvr nlvr2/eval/metrics.py — deterministic comparison of predicted True/False labels against ground truth ('prediction.lower() == example[\"label\"].lower()'); reports accuracy and consistency; no LLM. (File re-verified on GitHub master 2026-07-07.)", | |
| "note": "Ground truth is 'True'/'False' strings (statement verification), prompt appends 'Answer with True or False.'. Official also reports CONSISTENCY (all image-pairs of the same sentence correct) and per-split (balanced/unbalanced) accuracies — the org ships 6 HF splits (balanced/unbalanced x dev/test_public/test_unseen); headline is usually test_public accuracy. Per-sample scoring reproduces accuracy only. Metadata's cited lmms-eval tasks/nlvr2/utils.py does not exist in current lmms-eval main." | |
| }, | |
| "prompt_template": "<image><image>{{ question }}\nAnswer with True or False.", | |
| "mapping_from_source": { | |
| "media": { | |
| "from": "images", | |
| "type": "list", | |
| "min_items": 2, | |
| "max_items": 2 | |
| }, | |
| "id": { | |
| "from": "id" | |
| }, | |
| "question": { | |
| "from": "question" | |
| }, | |
| "answer": { | |
| "from": "answer", | |
| "optional": true | |
| }, | |
| "extra": { | |
| "synset": { | |
| "from": "synset" | |
| }, | |
| "writer": { | |
| "from": "writer" | |
| } | |
| }, | |
| "source": { | |
| "format": "huggingface", | |
| "url": { | |
| "balanced_dev": "https://huggingface.co/datasets/lmms-lab/NLVR2", | |
| "balanced_test_public": "https://huggingface.co/datasets/lmms-lab/NLVR2", | |
| "balanced_test_unseen": "https://huggingface.co/datasets/lmms-lab/NLVR2", | |
| "unbalanced_dev": "https://huggingface.co/datasets/lmms-lab/NLVR2", | |
| "unbalanced_test_unseen": "https://huggingface.co/datasets/lmms-lab/NLVR2", | |
| "unbalanced_test_public": "https://huggingface.co/datasets/lmms-lab/NLVR2" | |
| } | |
| } | |
| }, | |
| "prompt_template_source": { | |
| "origin": "fallback", | |
| "reference": "T2-adapted", | |
| "notes": "Tier 5: no higher tier publishes a generative prompt. T1: lil-lab/nlvr is pre-VLM (data + accuracy/consistency scripts only); lmms-lab/NLVR2 HF card states no prompt. T2: no prompt column. T3: no VLMEvalKit nlvr2. T4: lmms-eval never had a standalone nlvr2 task (code+commit search; only NLVR2_Mantis inside llava_interleave_bench with the prompt baked into the data). Template = two <image> tags + bare statement + mm-eval convention trailer 'Answer with True or False.' (T2-adapted)." | |
| } | |
| } | |
| } | |
| } |