Test upload

README.md

@@ -0,0 +1,117 @@
+---
+license: unknown
+task_categories:
+- object-detection
+- image-segmentation
+tags:
+- pdf
+- document-layout-analysis
+- data-extraction
+language:
+- en
+- fr
+- es
+size_categories:
+- n<1K
+---
+
+# Dataset card for data-snapshot
+
+## Dataset summary
+The `data-snapshot` dataset is an annotated corpus designed for the evaluation and development of models for extracting *data snapshots* from PDF documents. A **data snapshot** is defined as a figure or table that contains quantitative data derived from statistics, indicators, or structured data sources.
+
+## Dataset structure
+
+The repository is organized as follows:
+
+```
+ai4data/data-snapshot/
+├── annotations/<source>/per_document/*.json    # Contains annotation files per document
+├── annotations/<source>/combined/*.json        # Combined annotations into 1 JSON file per source
+├── documents/<source>/*.pdf                    # Raw PDFs
+├── metadata/<source>/*.json                    # Document-level metadata
+├── schemas/data-snapshot-eval-v1.3.schema.json # Provides the schema of the annotation file					
+└── README.md
+```
+
+### Subsets
+- `annotations`
+  - JSON files that indicate the data snapshots: their object class (Figure / Table) and bounding box locations (in normalized `[x1, y1, x2, y2]` format, top-left origin)
+  - Follows the schema provided in `data-snapshot-eval-v1.3.schema.json`
+  - Provided on a per-document basis or a combined JSON file per source
+- `metadata`
+  - Provided on a per-document basis
+
+### Sources
+- UNHCR
+- PRWP (WIP)
+- Refugee (WIP)
+
+## Schema
+
+The annotation files follow the **Data Snapshot Evaluation Format (v1.3)**. Below is a simplified, human-readable example of the JSON schema with explanatory comments for each field.
+
+> **Note**: You will notice a top-level field called `predictions`. In the context of this dataset, this is a misnomer because these are actually human-labeled **annotations** (ground truth). We use the key `predictions` because we borrow this schema from the project's evaluation codebase, which uses a unified structure for both ground truth and model predictions.
+
+```json
+{
+  // Canonical mapping of integer IDs to class names
+  "label_map": {
+    "1": "Figure",
+    "2": "Table"
+  },
+  
+  // High-level metadata about the file
+  "info": {
+    "schema_version": "1.3",
+    "type": "ground_truth",  // Indicates these are human annotations
+    "dataset_id": "data-snapshot_unhcr",
+    "created_at": "2026-04-17T12:00:00Z",
+    "coordinate_system": {
+      "type": "normalized_xyxy",
+      "range": [0.0, 1.0],  // Bounding boxes are normalized between 0 and 1
+      "origin": "top_left"
+    }
+  },
+  
+  // List of documents referenced in this file
+  "documents": [
+    {
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "doc_name": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "doc_path": "pdf_input/1_advocacy_note_mineaction_-_niger_eng.pdf"
+    }
+  ],
+  
+  // Per-page container of objects; these contain the ground truth annotations
+  "predictions": [
+    {
+      "page_id": "1_advocacy_note_mineaction_-_niger_eng.pdf::p001",
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "page_index": 0,  // 0-indexed page number
+      // Image data for Label Studio (ignore this)
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "images/1_advocacy_note_mineaction_-_niger_eng.pdf_p001.png"
+      },
+      "objects": [
+        {
+          "id": "obj_001",
+          "label": "Figure",  // Matches a label_map entry
+          "bbox": [0.1, 0.2, 0.8, 0.6],  // Normalized [x_min, y_min, x_max, y_max]
+        }
+      ]
+    }
+  ]
+}
+```
+
+## Dataset creation
+The annotations were produced through human labeling using Label Studio.
+
+## Licensing information
+[TBD]
+
+## Citation information
+[TBD]

annotations/prwp/3rp_annual_report_2023_annotations.json

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+{
+  "label_map": {
+    "1": "Figure",
+    "2": "Table"
+  },
+  "info": {
+    "schema_version": "1.3",
+    "type": "prediction",
+    "created_at": "2026-04-15T08:56:17Z",
+    "run_id": "unknown-combined-f41f207221",
+    "model": {},
+    "coordinate_system": {
+      "type": "normalized_xyxy",
+      "range": [
+        0.0,
+        1.0
+      ],
+      "origin": "top_left"
+    }
+  },
+  "documents": {
+    "doc_id": "3rp_annual_report_2023.pdf",
+    "doc_name": "3rp_annual_report_2023.pdf",
+    "doc_path": "pdf_input/3rp_annual_report_2023.pdf"
+  },
+  "predictions": [
+    {
+      "page_id": "3rp_annual_report_2023.pdf::p003",
+      "doc_id": "3rp_annual_report_2023.pdf",
+      "page_index": 3,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch7/3rp_annual_report_2023.pdf_p003.png"
+      },
+      "objects": [
+        {
+          "id": "21f4bba0",
+          "label": "Figure",
+          "bbox": [
+            0.1102086838423375,
+            0.21274284530735124,
+            0.48426837913454773,
+            0.43961155890331
+          ]
+        },
+        {
+          "id": "2a46dda6",
+          "label": "Figure",
+          "bbox": [
+            0.1070520477110413,
+            0.4664587345751412,
+            0.48778904893318276,
+            0.8411611211204744
+          ]
+        },
+        {
+          "id": "mq9K6MQnR9",
+          "label": "Figure",
+          "bbox": [
+            0.5174633797923607,
+            0.17736757624398097,
+            0.8874043048193537,
+            0.8852327447833075
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "3rp_annual_report_2023.pdf::p004",
+      "doc_id": "3rp_annual_report_2023.pdf",
+      "page_index": 4,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch7/3rp_annual_report_2023.pdf_p004.png"
+      },
+      "objects": [
+        {
+          "id": "58a47120",
+          "label": "Figure",
+          "bbox": [
+            0.10754278906407441,
+            0.5284592775679745,
+            0.8914898738222996,
+            0.8533256991831175
+          ]
+        },
+        {
+          "id": "WRC1wbDaZq",
+          "label": "Figure",
+          "bbox": [
+            0.10667008267649546,
+            0.22632423756019265,
+            0.34384079841466086,
+            0.47110754414125194
+          ]
+        },
+        {
+          "id": "5h1uO2y1Gn",
+          "label": "Figure",
+          "bbox": [
+            0.3699409250269949,
+            0.22391653290529695,
+            0.8964826097279939,
+            0.4743178170144463
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "3rp_annual_report_2023.pdf::p005",
+      "doc_id": "3rp_annual_report_2023.pdf",
+      "page_index": 5,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch7/3rp_annual_report_2023.pdf_p005.png"
+      },
+      "objects": [
+        {
+          "id": "c8716efa",
+          "label": "Figure",
+          "bbox": [
+            0.11141789856258899,
+            0.14673087650614505,
+            0.9016149197964507,
+            0.9280805763135942
+          ]
+        }
+      ]
+    }
+  ]
+}

annotations/unhcr/1_advocacy_note_mineaction_-_niger_eng_annotations.json

@@ -0,0 +1,126 @@
+{
+  "label_map": {
+    "1": "Figure",
+    "2": "Table"
+  },
+  "info": {
+    "schema_version": "1.3",
+    "type": "prediction",
+    "created_at": "2026-04-15T08:56:17Z",
+    "run_id": "unknown-combined-f41f207221",
+    "model": {},
+    "coordinate_system": {
+      "type": "normalized_xyxy",
+      "range": [
+        0.0,
+        1.0
+      ],
+      "origin": "top_left"
+    }
+  },
+  "documents": {
+    "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+    "doc_name": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+    "doc_path": "pdf_input/1_advocacy_note_mineaction_-_niger_eng.pdf"
+  },
+  "predictions": [
+    {
+      "page_id": "1_advocacy_note_mineaction_-_niger_eng.pdf::p001",
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "page_index": 1,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch9/1_advocacy_note_mineaction_-_niger_eng.pdf_p001.png"
+      },
+      "objects": [
+        {
+          "id": "405114a6",
+          "label": "Figure",
+          "bbox": [
+            0.45704879057411385,
+            0.6967757488649745,
+            0.8773235098991502,
+            0.8431980969465023
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "1_advocacy_note_mineaction_-_niger_eng.pdf::p002",
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "page_index": 2,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch9/1_advocacy_note_mineaction_-_niger_eng.pdf_p002.png"
+      },
+      "objects": [
+        {
+          "id": "ac6cd9df",
+          "label": "Figure",
+          "bbox": [
+            0.11501226471612505,
+            0.3637891806647041,
+            0.6170638714906183,
+            0.6763495716446917
+          ]
+        },
+        {
+          "id": "156e5605",
+          "label": "Figure",
+          "bbox": [
+            0.5019348136989036,
+            0.08465351437695244,
+            0.9329167705548818,
+            0.26163565883054424
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "1_advocacy_note_mineaction_-_niger_eng.pdf::p003",
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "page_index": 3,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch9/1_advocacy_note_mineaction_-_niger_eng.pdf_p003.png"
+      },
+      "objects": [
+        {
+          "id": "f8307721",
+          "label": "Figure",
+          "bbox": [
+            0.13599167892807285,
+            0.2891531076669725,
+            0.6823327173753422,
+            0.6069814463330835
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "1_advocacy_note_mineaction_-_niger_eng.pdf::p004",
+      "doc_id": "1_advocacy_note_mineaction_-_niger_eng.pdf",
+      "page_index": 4,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch9/1_advocacy_note_mineaction_-_niger_eng.pdf_p004.png"
+      },
+      "objects": [
+        {
+          "id": "7e134687",
+          "label": "Figure",
+          "bbox": [
+            0.4198705654642365,
+            0.08173203335187008,
+            0.9219388149937009,
+            0.23558702688120542
+          ]
+        }
+      ]
+    }
+  ]
+}

annotations/unhcr/1_note_plaidoyer_lutte_antimines_-_niger_fr_annotations.json

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+{
+  "label_map": {
+    "1": "Figure",
+    "2": "Table"
+  },
+  "info": {
+    "schema_version": "1.3",
+    "type": "prediction",
+    "created_at": "2026-04-15T08:56:17Z",
+    "run_id": "unknown-combined-f41f207221",
+    "model": {},
+    "coordinate_system": {
+      "type": "normalized_xyxy",
+      "range": [
+        0.0,
+        1.0
+      ],
+      "origin": "top_left"
+    }
+  },
+  "documents": {
+    "doc_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf",
+    "doc_name": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf",
+    "doc_path": "pdf_input/1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf"
+  },
+  "predictions": [
+    {
+      "page_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf::p002",
+      "doc_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf",
+      "page_index": 2,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch4/1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf_p002.png"
+      },
+      "objects": [
+        {
+          "id": "f6939669",
+          "label": "Figure",
+          "bbox": [
+            0.10173095980014918,
+            0.5104798828135715,
+            0.5872497926424556,
+            0.8085951881557614
+          ]
+        },
+        {
+          "id": "e25bd601",
+          "label": "Figure",
+          "bbox": [
+            0.5362254107781641,
+            0.0863331758853647,
+            0.8860316924249294,
+            0.4310685509015108
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf::p003",
+      "doc_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf",
+      "page_index": 3,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch4/1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf_p003.png"
+      },
+      "objects": [
+        {
+          "id": "6d3484f8",
+          "label": "Figure",
+          "bbox": [
+            0.14079719090376527,
+            0.3932079229441068,
+            0.6848430640048104,
+            0.7131876986714888
+          ]
+        }
+      ]
+    },
+    {
+      "page_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf::p004",
+      "doc_id": "1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf",
+      "page_index": 4,
+      "image": {
+        "width_px": 2481,
+        "height_px": 3508,
+        "path": "/data/local-files/?d=unhcr_batch4/1_note_plaidoyer_lutte_antimines_-_niger_fr.pdf_p004.png"
+      },
+      "objects": [
+        {
+          "id": "daa237eb",
+          "label": "Figure",
+          "bbox": [
+            0.35991928006594615,
+            0.08633167958449876,
+            0.9171604677086769,
+            0.227889718895961
+          ]
+        }
+      ]
+    }
+  ]
+}

annotations/unhcr/2_note_danalyse_de_protection_-_retour_de_pdi_a_teguy_annotations.json

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+{
+  "label_map": {
+    "1": "Figure",
+    "2": "Table"
+  },
+  "info": {
+    "schema_version": "1.3",
+    "type": "prediction",
+    "created_at": "2026-04-15T08:56:17Z",
+    "run_id": "unknown-combined-f41f207221",
+    "model": {},
+    "coordinate_system": {
+      "type": "normalized_xyxy",
+      "range": [
+        0.0,
+        1.0
+      ],
+      "origin": "top_left"
+    }
+  },
+  "documents": {
+    "doc_id": "2_note_danalyse_de_protection_-_retour_de_pdi_a_teguy.pdf",
+    "doc_name": "2_note_danalyse_de_protection_-_retour_de_pdi_a_teguy.pdf",
+    "doc_path": "pdf_input/2_note_danalyse_de_protection_-_retour_de_pdi_a_teguy.pdf"
+  },
+  "predictions": []
+}

metadata/prwp/3rp_annual_report_2023_metadata.json

@@ -0,0 +1,36 @@
+{
+    "report_url": "https://reliefweb.int/report/syrian-arab-republic/3rp-regional-refugee-and-resilience-plan-annual-report-2023",
+    "title": "3RP (Regional Refugee and Resilience Plan) - Annual Report 2023",
+    "Format": "Evaluation and Lessons Learned",
+    "Source": [
+        "R4V"
+    ],
+    "Posted": "16 Jul 2025",
+    "Originally published": "16 Jul 2025",
+    "Origin": "View original",
+    "Primary country": [
+        "Syrian Arab Republic"
+    ],
+    "Other countries": [
+        "Egypt",
+        "Iraq",
+        "Jordan",
+        "Lebanon",
+        "occupied Palestinian territory",
+        "Türkiye",
+        "World"
+    ],
+    "Themes": [
+        "Education",
+        "Food and Nutrition",
+        "Health",
+        "Protection and Human Rights",
+        "Recovery and Reconstruction",
+        "Shelter and Non-Food Items",
+        "Water Sanitation Hygiene"
+    ],
+    "Language": [
+        "English"
+    ],
+    "pdf_url": "https://reliefweb.int/attachments/bbef6510-952b-4d42-9631-d6b876dc6bf1/3RP_Annual_Report_2023_.pdf"
+}

metadata/unhcr/1_advocacy_note_mineaction_-_niger_eng_metadata.json

@@ -0,0 +1,25 @@
+{
+    "report_url": "https://reliefweb.int/report/niger/advocacy-note-crucial-need-reinforce-actions-against-growing-threat-explosive-devices-ed-niger",
+    "title": "Advocacy note - a crucial need to reinforce actions against the growing threat of explosive devices (ED) in Niger",
+    "Format": "Analysis",
+    "Sources": [
+        "Health Cluster",
+        "WHO"
+    ],
+    "Posted": "1 Mar 2024",
+    "Originally published": "1 Mar 2024",
+    "Primary country": [
+        "Niger"
+    ],
+    "Themes": [
+        "Mine Action",
+        "Protection and Human Rights"
+    ],
+    "Language": [
+        "English"
+    ],
+    "Source": [
+        "OCHA"
+    ],
+    "pdf_url": "https://reliefweb.int/attachments/1613bd92-5065-4c7e-9263-f115ffea540f/1.%20Advocacy%20note%20MineAction%20-%20Niger_Eng.pdf"
+}

metadata/unhcr/1_note_plaidoyer_lutte_antimines_-_niger_fr_metadata.json

@@ -0,0 +1,25 @@
+{
+    "report_url": "https://reliefweb.int/report/niger/note-de-plaidoyer-un-besoin-crucial-de-renforcement-des-actions-contre-la-menace-croissante-des-engins-explosifs-ee-au-niger",
+    "title": "Note de plaidoyer: un besoin crucial de renforcement des actions contre la ménace croissante des engins explosifs (EE) au Niger",
+    "Format": "Analysis",
+    "Sources": [
+        "Health Cluster",
+        "WHO"
+    ],
+    "Posted": "1 Mar 2024",
+    "Originally published": "1 Mar 2024",
+    "Primary country": [
+        "Niger"
+    ],
+    "Themes": [
+        "Mine Action",
+        "Protection and Human Rights"
+    ],
+    "Language": [
+        "French"
+    ],
+    "Source": [
+        "OCHA"
+    ],
+    "pdf_url": "https://reliefweb.int/attachments/246cc207-af41-430c-9600-6cdbb5448cbf/1.%20Note%20plaidoyer%20Lutte%20AntiMines%20-%20Niger_FR.pdf"
+}

metadata/unhcr/2_note_danalyse_de_protection_-_retour_de_pdi_a_teguy_metadata.json

@@ -0,0 +1,29 @@
+{
+    "report_url": "https://reliefweb.int/report/niger/note-danalyse-de-protection-sur-le-retour-de-personnes-deplacees-internes-pdi-de-teguey",
+    "title": "Note d’analyse de protection sur le retour de personnes déplacées internes (PDI) de Teguey",
+    "Format": "News and Press Release",
+    "Sources": [
+        "ACF",
+        "ACTED",
+        "DRC",
+        "5 more"
+    ],
+    "Posted": "7 Oct 2025",
+    "Originally published": "7 Oct 2025",
+    "Primary country": [
+        "Niger"
+    ],
+    "Themes": [
+        "Food and Nutrition",
+        "Health",
+        "Protection and Human Rights",
+        "Water Sanitation Hygiene"
+    ],
+    "Language": [
+        "French"
+    ],
+    "Source": [
+        "UNHCR"
+    ],
+    "pdf_url": "https://reliefweb.int/attachments/a01ed30f-33d5-4db9-bd7e-d7d6a82e109c/2.%20Note%20d%27analyse%20de%20Protection%20-%20Retour%20de%20PDI%20a%20Teguy.pdf"
+}

schemas/data-snapshot-eval-v1.3.schema.json

@@ -0,0 +1,272 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://example.org/schemas/data-snapshot-eval-v1.3.schema.json",
+  "title": "Data Snapshot Evaluation Format (v1.3)",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["label_map", "info", "documents", "predictions"],
+
+  "properties": {
+    "label_map": {
+      "description": "Canonical mapping of integer label IDs to label names. Keys are strings that parse to positive integers.",
+      "type": "object",
+      "minProperties": 1,
+      "additionalProperties": false,
+      "patternProperties": {
+        "^[1-9][0-9]*$": { "type": "string", "minLength": 1 }
+      }
+    },
+
+    "info": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["schema_version", "type", "coordinate_system"],
+      "properties": {
+        "schema_version": { "type": "string", "const": "1.3" },
+
+        "type": {
+          "description": "Whether this file is ground truth or model predictions.",
+          "type": "string",
+          "enum": ["ground_truth", "prediction"]
+        },
+
+        "dataset_id": {
+          "description": "Identifier for the dataset (required for ground truth).",
+          "type": "string",
+          "minLength": 1
+        },
+        "created_at": {
+          "description": "ISO8601 date or datetime string.",
+          "type": "string",
+          "minLength": 8
+        },
+
+        "run_id": {
+          "description": "Identifier for a prediction run (required for predictions).",
+          "type": "string",
+          "minLength": 1
+        },
+        "model": {
+          "description": "Model metadata (required for predictions).",
+          "type": "object",
+          "additionalProperties": true,
+          "required": ["name"],
+          "properties": {
+            "name": { "type": "string", "minLength": 1 },
+            "version": { "type": "string" },
+            "notes": { "type": "string" }
+          }
+        },
+
+        "coordinate_system": {
+          "type": "object",
+          "additionalProperties": false,
+          "required": ["type", "range", "origin"],
+          "properties": {
+            "type": { "type": "string", "const": "normalized_xyxy" },
+            "range": {
+              "description": "Fixed numeric range for normalized coordinates.",
+              "type": "array",
+              "minItems": 2,
+              "maxItems": 2,
+              "items": [{ "type": "number", "const": 0.0 }, { "type": "number", "const": 1.0 }]
+            },
+            "origin": { "type": "string", "const": "top_left" }
+          }
+        }
+      },
+      "allOf": [
+        {
+          "if": {
+            "properties": { "type": { "const": "ground_truth" } },
+            "required": ["type"]
+          },
+          "then": {
+            "required": ["dataset_id", "created_at"],
+            "properties": {
+              "run_id": false,
+              "model": false
+            }
+          }
+        },
+        {
+          "if": {
+            "properties": { "type": { "const": "prediction" } },
+            "required": ["type"]
+          },
+          "then": {
+            "required": ["run_id", "model"],
+            "properties": {
+              "dataset_id": false
+            }
+          }
+        }
+      ]
+    },
+
+    "documents": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "additionalProperties": false,
+        "required": ["doc_id", "doc_name", "doc_path"],
+        "properties": {
+          "doc_id": { "type": "string", "minLength": 1 },
+          "doc_name": { "type": "string", "minLength": 1 },
+          "doc_path": { "type": "string", "minLength": 1 }
+        }
+      }
+    },
+
+    "predictions": {
+      "description": "Per-page container of objects. Used for both GT and predictions.",
+      "type": "array",
+      "minItems": 1,
+      "items": { "$ref": "#/$defs/pageEntry" }
+    }
+  },
+
+  "$defs": {
+    "bbox": {
+      "description": "Normalized [x1, y1, x2, y2] in [0,1].",
+      "type": "array",
+      "minItems": 4,
+      "maxItems": 4,
+      "items": [
+        { "type": "number", "minimum": 0.0, "maximum": 1.0 },
+        { "type": "number", "minimum": 0.0, "maximum": 1.0 },
+        { "type": "number", "minimum": 0.0, "maximum": 1.0 },
+        { "type": "number", "minimum": 0.0, "maximum": 1.0 }
+      ]
+    },
+
+    "imageInfo": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["width_px", "height_px", "path"],
+      "properties": {
+        "width_px": { "type": "integer", "minimum": 1 },
+        "height_px": { "type": "integer", "minimum": 1 },
+        "path": { "type": "string", "minLength": 1 }
+      }
+    },
+
+    "objectBase": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["id", "label", "bbox"],
+      "properties": {
+        "id": { "type": "string", "minLength": 1 },
+
+        "label": {
+          "description": "Human-readable label name (must be consistent with label_map; enforced in code).",
+          "type": "string",
+          "minLength": 1
+        },
+
+        "bbox": { "$ref": "#/$defs/bbox" },
+
+        "attributes": {
+          "description": "Optional free-form metadata (typically for GT).",
+          "type": "object",
+          "additionalProperties": true
+        },
+
+        "score": {
+          "description": "Confidence score in [0,1] (required for prediction objects; forbidden for GT objects).",
+          "type": "number",
+          "minimum": 0.0,
+          "maximum": 1.0
+        }
+      }
+    },
+
+    "pageEntry": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["page_id", "doc_id", "page_index", "objects"],
+      "properties": {
+        "page_id": { "type": "string", "minLength": 1 },
+        "doc_id": { "type": "string", "minLength": 1 },
+        "page_index": { "type": "integer", "minimum": 0 },
+
+        "image": { "$ref": "#/$defs/imageInfo" },
+
+        "objects": {
+          "type": "array",
+          "items": { "$ref": "#/$defs/objectBase" }
+        }
+      }
+    }
+  },
+
+  "allOf": [
+    {
+      "description": "Ground truth pages must include image info; prediction pages must not include image info.",
+      "if": {
+        "properties": {
+          "info": {
+            "properties": { "type": { "const": "ground_truth" } },
+            "required": ["type"]
+          }
+        }
+      },
+      "then": {
+        "properties": {
+          "predictions": {
+            "items": { "required": ["image"] }
+          }
+        }
+      },
+      "else": {
+        "properties": {
+          "predictions": {
+            "items": {
+              "not": { "required": ["image"] }
+            }
+          }
+        }
+      }
+    },
+    {
+      "description": "Ground truth objects must not have score; prediction objects must have score.",
+      "if": {
+        "properties": {
+          "info": {
+            "properties": { "type": { "const": "ground_truth" } },
+            "required": ["type"]
+          }
+        }
+      },
+      "then": {
+        "properties": {
+          "predictions": {
+            "items": {
+              "properties": {
+                "objects": {
+                  "items": {
+                    "not": { "required": ["score"] }
+                  }
+                }
+              }
+            }
+          }
+        }
+      },
+      "else": {
+        "properties": {
+          "predictions": {
+            "items": {
+              "properties": {
+                "objects": {
+                  "items": { "required": ["score"] }
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  ]
+}