{
  "name": "MME-RealWorld-Lite",
  "release_date": "2026-05-15",
  "subsets": {
    "main": {
      "language": [
        "en"
      ],
      "modalities": [
        "single_image_start"
      ],
      "task_type": "multiple_choice_vqa",
      "score_type": "rule",
      "score_protocol": {
        "reference": "VLMEvalKit@vlmeval/dataset/image_mcq.py:1053-1103 — MMERealWorld.evaluate extracts the choice with extract_characters_regex (utils/multiple_choice.py:585, choices (A)-(E)) after optional <answer>...</answer> unwrapping; unmatched predictions score 0; exact letter compare; NO LLM at any step (mirrors the official yfzhang114/MME-RealWorld rule-based protocol).",
        "note": "Official reporting uses per-task/l2-category dimension ratings (get_dimension_rating) over Perception/Reasoning; per-sample mean reproduces only overall accuracy. Five options with E typically 'The image does not feature the object.'; published choices carry '(A) ...' prefixes with a bare letter as answer."
      },
      "prompt_template": "<image>{{ question }} The choices are listed below:\n{% for c in choices %}{{ c }}\n{% endfor %}Select the best answer to the above multiple-choice question based on the image. Respond with only the letter (A, B, C, D, or E) of the correct option. The best answer is:",
      "mapping_from_source": {
        "media": {
          "from": "image",
          "type": "list",
          "min_items": 1,
          "max_items": 1
        },
        "id": {
          "from": "question_id"
        },
        "question": {
          "from": "text"
        },
        "answer": {
          "from": "answer",
          "optional": true
        },
        "choices": {
          "from": "choices",
          "optional": true
        },
        "extra": {
          "category": {
            "from": "category"
          },
          "subtask": {
            "from": "subtask"
          },
          "task": {
            "from": "task"
          }
        },
        "source": {
          "format": "json",
          "url": {
            "test": "https://huggingface.co/datasets/yifanzhang114/MME-RealWorld-Lite"
          }
        }
      },
      "prompt_template_source": {
        "origin": "official",
        "reference": "https://github.com/yfzhang114/MME-RealWorld README",
        "notes": "Tier 1: byte-for-byte from cited source"
      }
    }
  }
}