---
language: en
license: apache-2.0
tags:
- elasticsearch
- books
- authors
- metadata
dataset_name: Bookologia Indices Dataset
pretty_name: Bookologia Indices Dataset
---

# Bookologia Indices Dataset

Bookologia is a specialized search engine of books, to find any book within seconds.  
This dataset contains three Elasticsearch indices extracted from Bookologia database: **authors_data**, **book_links**, and **books_data_bis**.  
Each index stores structured metadata relevant to authors, books, and associated resources.  
This dump is suitable for tasks involving metadata analysis, author-book linking, recommendation systems, or search enhancement.  
More about the project here: [https://github.com/blankresearch/Bookologia](https://github.com/blankresearch/Bookologia)

---

## 1. authors_data

Contains author profiles with information such as biographical details, ratings, genres, and influences.

| Field          | Type    | Description                         |
|----------------|---------|-----------------------------------|
| author_id      | long    | Unique identifier for the author  |
| name           | text    | Author’s name                     |
| about          | text    | Biography or description          |
| birth_date     | text    | Birth date (text format)          |
| death_date     | text    | Death date (if applicable)        |
| genres         | text    | Associated genres                 |
| influences     | text    | Influences on the author          |
| avg_rating     | float   | Average rating of the author’s works |
| ratings_count  | text    | Number of ratings received         |
| reviews_count  | text    | Number of reviews received         |
| author_image   | text    | URL or path to author image        |
| createdAt      | date    | Record creation timestamp          |
| updatedAt      | date    | Last update timestamp              |
| userRating     | integer | User’s rating (default 0 if null) |

---

## 2. book_links

Stores URLs and metadata for book editions, indicating availability of PDF versions.

| Field            | Type    | Description                          |
|------------------|---------|------------------------------------|
| book_id          | keyword | Unique book identifier              |
| edition_unique_id | keyword | Unique edition identifier           |
| links            | nested  | List of links with URL and PDF flag|
| └─ url           | keyword | URL to the resource                 |
| └─ is_pdf        | boolean | Whether the URL points to a PDF    |
| update_date      | date    | Last update timestamp               |

---

## 3. books_data_bis

Comprehensive book metadata including identifiers, descriptions, awards, publication info, and ratings.

| Field            | Type    | Description                                  |
|------------------|---------|----------------------------------------------|
| book_id          | text    | Unique book identifier                        |
| asin             | text    | Amazon Standard Identification Number        |
| author_id        | text    | Associated author identifier                  |
| title            | text    | Book title                                   |
| titlecomplete    | text    | Full title, possibly including subtitles      |
| description      | text    | Book description                             |
| genres           | text    | Book genres                                  |
| awards           | object  | Award details: name, category, awardedAt timestamp |
| characters       | text    | Key characters in the book                    |
| isbn13           | text    | ISBN-13 number                               |
| isbn_10          | text    | ISBN-10 number                               |
| language         | text    | Language of the book                          |
| link             | text    | Link to the book’s webpage                     |
| num_pages        | long    | Number of pages                              |
| places           | text    | Places relevant to the book                   |
| publish_date     | long    | Publication date (timestamp or year)          |
| publisher        | text    | Publisher name                               |
| ratinghistogram  | text    | Distribution of ratings                       |
| ratings_count    | long    | Number of ratings                            |
| reviews_count    | long    | Number of reviews                            |
| series           | text    | Series name (if any)                          |
| thumbnail_url    | text    | URL to book thumbnail image                   |
| createdAt        | long    | Creation timestamp                           |
| updatedAt        | long    | Last update timestamp                        |
| userRating       | long    | User rating                                  |

---

## Notes

- Dates in text fields may have varied formats; use appropriate parsing methods.  
- Some fields like ratings and reviews in authors_data are stored as text, not numeric, so cast carefully.