{
  "audit_date": "2026-07-03",
  "vault_papers": 731,
  "papers_with_captions": 712,
  "total_caption_blocks": 5822,
  "caption_format_distribution": {
    "standard_numeric": {
      "count": 4093,
      "pct": 70.3,
      "status": "matched OK"
    },
    "plain_prefix_missing": {
      "count": 1343,
      "pct": 23.1,
      "status": "PARTIAL — some reserved, some body text mislabeled"
    },
    "unclassified_other": {
      "count": 270,
      "pct": 4.6,
      "status": "not matched, needs per-case check"
    },
    "scheme_numeric": {
      "count": 32,
      "pct": 0.5,
      "status": "GAP — Scheme prefix not in figure regex"
    },
    "numeric_alpha_suffix": {
      "count": 27,
      "pct": 0.5,
      "status": "GAP — suffix letter lost, hyphen variants break"
    },
    "chinese_图": {
      "count": 22,
      "pct": 0.4,
      "status": "GAP — Chinese prefix not in figure regex"
    },
    "appendix_alpha": {
      "count": 14,
      "pct": 0.2,
      "status": "GAP — alphabetic number prefix not supported"
    },
    "fig_nospace": {
      "count": 10,
      "pct": 0.2,
      "status": "actually OK — parsed as fig_nospace→matched"
    },
    "suppl_S_numeric": {
      "count": 8,
      "pct": 0.1,
      "status": "OK — S prefix supported"
    },
    "suppl_numeric": {
      "count": 3,
      "pct": 0.1,
      "status": "OK — Supplementary prefix supported"
    }
  },
  "vision_verified_gaps": [
    {
      "gap_id": "GAP-1",
      "name": "Scheme N prefix not supported",
      "affected_papers": 28,
      "affected_captions": 32,
      "root_cause": "regex only handles 'Figure'/'Fig.' prefixes",
      "location": "ocr_figures.py:_FIGURE_NUMBER_PATTERN (line 14)",
      "vision_verified": [
        "BL8ABQ2A p2 — Scheme 1 has diagram, reserved with 0 assets"
      ],
      "fix": "add 'Scheme' as recognized prefix option"
    },
    {
      "gap_id": "GAP-2",
      "name": "Alphabetic figure number (Figure A1/A2, Fig. A1)",
      "affected_papers": 12,
      "affected_captions": 14,
      "root_cause": "regex uses \\d+ only for number capture, [A-Z] not recognized",
      "location": "ocr_figures.py:_FIGURE_NUMBER_PATTERN, _extract_figure_marker (lines 14, 128)",
      "vision_verified": [
        "M84CTEM9 p8 — Figure A1 caption→image (block 33) not matched as asset",
        "M84CTEM9 p9 — Figure A2 caption→nomogram image UNMATCHED",
        "AH6Q7DLC — expected appendix pattern, no match"
      ],
      "fix": "extend regex to optional ([A-Z])\\d* after 'Figure ' prefix"
    },
    {
      "gap_id": "GAP-3",
      "name": "Subfigure alphabetic suffix with hyphen (Fig. 2-A, Figs. 2-A through 2-D)",
      "affected_papers": 14,
      "affected_captions": 27,
      "root_cause": "hyphen + letter suffix causes partial match or doubles",
      "location": "ocr_figures.py:_FIGURE_NUMBER_PATTERN",
      "vision_verified": [
        "VAMSAZMG p4 — Fig. 2-A through 2-D caption UNMATCHED, Fig. 2-C duplicated"
      ],
      "fix": "add hyphen+letter optional suffix as subfigure indicator"
    },
    {
      "gap_id": "GAP-4",
      "name": "Chinese 图 prefix not supported",
      "affected_papers": 2,
      "affected_captions": 22,
      "root_cause": "regex doesn't include Chinese '图' prefix",
      "location": "ocr_figures.py:_FIGURE_NUMBER_PATTERN",
      "fix": "add '图' as recognized prefix"
    },
    {
      "gap_id": "GAP-5",
      "name": "Descriptive/plain-text captions misclassified as figure_caption",
      "affected_papers": 374,
      "affected_captions": 1343,
      "root_cause": "67% (descriptive paragraphs + short_trash) are NOT figures — role classifier over-assigns figure_caption_candidate",
      "subtypes": {
        "descriptive_paragraph_not_figure": {
          "count": 767,
          "pct_of_category": 57.1
        },
        "very_short_trash": {
          "count": 418,
          "pct_of_category": 31.1
        },
        "short_alpha_label_subfigure": {
          "count": 222,
          "pct_of_category": 16.5
        },
        "mislabeled_table": {
          "count": 67,
          "pct_of_category": 5.0
        }
      }
    }
  ],
  "baseline_performance": {
    "standard_numeric_papers": {
      "matched": "~679 papers, ~4093 captions",
      "verified": "NC66N4Q3 (26 fig, 52 assets) — all correct"
    },
    "fig_nospace": {
      "matched": "all 5 captions in 5MAW65YD OK",
      "verified": "regex actually handles no-space variant"
    },
    "summary": "Standard Figure N / Fig. N format works correctly for all 4093 cases across 679 papers"
  },
  "total_impact_estimate": "~50-80 figures with real content (caption + image) not matched across 731 papers, primarily from GAP-1 (Scheme, 28 papers) and GAP-2 (appendix alpha, 12 papers)"
}