metadata
license: mit
task_categories:
- text-generation
- question-answering
language:
- en
tags:
- pdf2dataset
- ocr
- chunked
size_categories:
- n<1K
EmpiresOfMedievalWestAfrica
Dataset created with PDF2Dataset -- OCR + structure-aware chunking pipeline.
Dataset Summary
| Metric | Value |
|---|---|
| Total chunks | 419 |
| Avg chars/chunk | 665 |
| Avg images/chunk | 0.10 |
| Source files | 1 |
| Duplicates removed | 0 |
| Quality filtered | 3 |
Schema
| Column | Type | Description |
|---|---|---|
chunk_id |
string |
Unique identifier: filename_chunk_N |
text |
string |
Raw markdown chunk with image refs |
text_clean |
string |
Cleaned text without markdown formatting |
chapter |
string |
H1 header active at chunk position |
section |
string |
H2 header active at chunk position |
subsection |
string |
H3+ header active at chunk position |
images |
list[Image] |
Rendered images extracted from chunk (viewable in Dataset Viewer) |
image_refs |
list[string] |
Image reference IDs in chunk text |
num_images |
int |
Number of images in chunk |
has_images |
bool |
Whether chunk contains images |
source_filename |
string |
Original source file name |
start_index |
int |
Character offset in source document |
char_count |
int |
Character count of chunk text |
Source Files
| File | Chunks |
|---|---|
david_c._conrad_empires_of_medieval_west_africabook4me.org_.pdf |
419 |
Document Structure
Chapters found in the source documents:
- A Changeable King
- A Mix of Cultures
- A World Famous Arma
- Age Grade Societies
- Askiya Muhammad the Great
- BIBLIOGRAPHY
- CONNECTIONS
- CONTENTS
- Epilogue
- Ethnic Groups of the Ghana, Mali, and Songhay Empires
- HISTORY
- INDEX
- Introduction
- Library of Congress Cataloging-in-Publication Data
- Making the Best of Life
- Mande Social Organization
- Mansa Musa the Great
- Mansa Musa's Pilgrimage
- Modern Mali
- Moroccan Firearms
- Muhammad and the Islamic Empire
- Other Influences
- RESOURCES: Books
- RESOURCES: Web Sites
- SOCIETY AND CULTURE
- SOME MALI BASICS
- Salt of the Sahara
- Secret Sites
- Sii Ali's Last Campaigns
- TIME LINE
- ... and 15 more
Pipeline
This dataset was processed through the PDF2Dataset pipeline:
- OCR -- Mistral OCR extracts text and images from PDF/image files
- Chunking -- Structure-aware recursive splitting preserves document hierarchy
- Validation -- Schema validation ensures every chunk has required fields
- Deduplication -- Content-hash based dedup removes identical chunks
- Quality Filtering -- Removes empty, too-short, or malformed chunks