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README.md

@@ -17,53 +17,113 @@ task_categories:
   - image-to-text
   - text-generation
   - question-answering
-pretty_name: "Expediente 23-F: Documentos Desclasificados del Golpe de Estado"
+pretty_name: "Expediente 23-F: Declassified Documents from the 1981 Spanish Coup Attempt"
 size_categories:
-  - n<1K
+  - 1K<n<10K
 ---
 
-# Expediente 23-F: Documentos Desclasificados
+# Expediente 23-F: Declassified Documents from the 1981 Spanish Coup Attempt
 
-Dataset educativo con documentos desclasificados del intento de golpe de Estado del 23 de febrero de 1981 en Espana (23-F). Cada fila corresponde a una pagina de documento.
+A page-level multimodal dataset of declassified Spanish government documents related to the failed coup d'etat of February 23, 1981 (known as 23-F). Each row contains a rendered page image paired with its extracted text, sourced from official state archives.
 
-## Estructura
+## Historical Context
 
-| Columna | Tipo | Descripcion |
+On February 23, 1981, Lieutenant Colonel Antonio Tejero stormed the Spanish Congress of Deputies with armed Guardia Civil officers during the investiture vote of Prime Minister Leopoldo Calvo-Sotelo. The coup failed after King Juan Carlos I publicly opposed it in a televised address. These documents were declassified and published by the Spanish Government through the *Portal de Archivos Estatales*.
+
+## Dataset Schema
+
+| Column | Type | Description |
+|---|---|---|
+| `image` | `Image` | Rendered page image (150 DPI) |
+| `pdf_source` | `string` | Relative path to the original PDF or image file |
+| `page_number` | `int32` | Page number within the source document (1-indexed) |
+| `text` | `string` | Extracted text for the page (OCR or pdf-parse) |
+| `ministry` | `string` | Originating ministry (`interior`, `exteriores`, `defensa`) |
+| `archive_id` | `string` | Archival signature (e.g., `AGA-83-07633`, `AGMAE-R39017`) |
+
+## Dataset Statistics
+
+| Metric | Value |
+|---|---|
+| **Total rows (pages)** | 1,224 |
+| **Source documents** | 167 |
+| **Text coverage** | 100% (all pages have extracted text) |
+| **Total extracted text** | ~12.6 million characters |
+| **File types** | 155 PDFs (92.8%), 12 JPGs (7.2%) |
+
+### Documents by Ministry
+
+| Ministry | Documents | Description |
 |---|---|---|
-| `image` | Image | Imagen renderizada de la pagina del documento |
-| `pdf_source` | string | Ruta relativa del PDF/imagen original |
-| `page_number` | int | Numero de pagina dentro del documento |
-| `text` | string | Texto extraido de la pagina (OCR / pdf-parse) |
-| `ministry` | string | Ministerio de procedencia (interior, exteriores, defensa) |
-| `archive_id` | string | Signatura del archivo (ej: AGA-83-07633, AGMAE-R39017) |
+| `defensa` | 108 | Military intelligence reports (CESID/CNI), internal memos |
+| `exteriores` | 31 | Diplomatic cables, embassy communications, verbal notes |
+| `interior` | 28 | Wiretap transcripts from the Guardia Civil, phone intercepts between conspirators |
 
-## Procedencia de los documentos
+### Document Characteristics
 
-- **interior/** — Transcripciones de escuchas telefonicas de la Guardia Civil
-- **exteriores/** — Documentos diplomaticos del Ministerio de Asuntos Exteriores
-- **defensa/** — Documentos del Ministerio de Defensa (informes CESID/CNI)
+| Property | Breakdown |
+|---|---|
+| **Format** | 90 typed, 73 scanned, 4 handwritten |
+| **Classification level** | 88 *secreto*, 77 *reservado*, 2 *confidencial* |
+| **Pages per document** | Min: 1, Max: 312, Mean: 7.3 |
+| **Text length per document** | Min: 130 chars, Median: 26.8K chars, Max: 3.45M chars |
 
-## Contexto historico
+## Data Processing Pipeline
 
-El 23 de febrero de 1981, el teniente coronel Antonio Tejero irrumpio en el Congreso de los Diputados con guardias civiles armados durante la votacion de investidura de Leopoldo Calvo-Sotelo. El golpe fracaso gracias a la intervencion del rey Juan Carlos I.
+### Image Rendering
+- **Tool:** `pdf2image` + Poppler
+- **Resolution:** 150 DPI (PNG)
+- **JPG documents** are loaded directly as single-page images
 
-Estos documentos fueron desclasificados y publicados por el Gobierno de Espana a traves del portal de Archivos Estatales.
+### Text Extraction
+Two extraction methods were used depending on document type:
 
-## Uso
+1. **pdf-parse** (typed documents): Direct text extraction from digitally-created PDFs
+2. **Vision-Language OCR** (scanned/handwritten documents):
+   - **Model:** [`mlx-community/GLM-OCR-bf16`](https://huggingface.co/mlx-community/GLM-OCR-bf16) running on Apple Silicon via MLX
+   - **Input resolution:** 200 DPI
+   - **Max tokens per page:** 8,192
+   - **Post-processing:** Whitespace normalization, paragraph structure preservation
+
+The `isOcrText` field in the source metadata indicates which method was used per document.
+
+## Usage
 
 ```python
 from datasets import load_dataset
 
 ds = load_dataset("JorgeAV/23f-expediente")
 
-# Ver una pagina
+# Display a page
 print(ds["train"][0]["text"])
 ds["train"][0]["image"].show()
 
-# Filtrar por ministerio
+# Filter by ministry
 interior = ds["train"].filter(lambda x: x["ministry"] == "interior")
+
+# Get all pages from a specific document
+doc_pages = ds["train"].filter(lambda x: x["pdf_source"] == "interior/guardia-civil/23F_1_conversacion_gc_tejero.pdf")
 ```
 
-## Licencia
+## Intended Uses
+
+- **Historical research** on the Spanish Transition to democracy
+- **Document AI** benchmarking: OCR, layout analysis, and document understanding on Spanish historical documents
+- **NLP in Spanish**: text extraction quality evaluation, named entity recognition on official/archival language
+- **Educational projects** about 20th-century European political history
+
+## Limitations
+
+- OCR quality is lower on handwritten documents (4 out of 167)
+- Some scanned pages may contain text artifacts or recognition errors
+- Text extraction from multi-column layouts may not preserve reading order perfectly
+- All text is in Spanish; no translations are provided
+
+## Source & License
+
+- **Original documents:** Public domain (declassified records from the Spanish Government, published via the *Portal de Archivos Estatales*)
+- **Structured dataset:** [CC-BY-4.0](https://creativecommons.org/licenses/by/4.0/)
+
+## Associated Project
 
-Los documentos originales son de dominio publico (documentos desclasificados del Gobierno de Espana). El dataset estructurado se distribuye bajo CC-BY-4.0.
+This dataset powers [23f-expediente](https://github.com/JorgeAV/23f-expediente), an interactive educational web application with an FBI/spy case-file aesthetic for exploring the 23-F documents.