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README.md
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---
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license: cc0-1.0
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task_categories:
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- image-to-text
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- text-generation
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language:
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- en
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tags:
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- lance
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- historical
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- ocr
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- encyclopaedia
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- britannica
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- 18th-century
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- 19th-century
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pretty_name: Encyclopaedia Britannica (1771-1860)
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size_categories:
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- 100K<n<1M
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---
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# Encyclopaedia Britannica (1771-1860) - Lance Format
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This dataset contains 155,388 digitized pages from the Encyclopaedia Britannica, spanning editions from 1771 to 1860. The data is stored in **Lance format** for efficient streaming and lazy image loading.
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## Dataset Details
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- **Total Pages**: 155,388
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- **Total Volumes**: 195
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- **Format**: Lance (columnar format with blob storage for images)
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- **Source**: National Library of Scotland (NLS)
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- **License**: Public Domain (CC0)
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## Loading the Dataset
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```python
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import lance
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# Load from Hugging Face Hub
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ds = lance.dataset("hf://datasets/davanstrien/encyclopaedia-britannica-lance-test/data/train.lance")
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# Check total rows
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print(f"Total pages: {ds.count_rows()}")
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# Sample a few rows (metadata only, images are lazy-loaded)
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sample = ds.take([0, 100, 1000]).to_pydict()
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for i, idx in enumerate([0, 100, 1000]):
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print(f"Page {idx}: {sample['volume_part'][i]}")
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```
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## Schema
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| Field | Type | Description |
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|-------|------|-------------|
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| `volume_id` | string | NLS volume identifier |
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| `page_number` | int32 | Page number within volume |
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| `file_identifier` | string | Base filename identifier |
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| `image` | binary (blob) | Page image (JPEG, lazy-loaded) |
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| `text` | string | OCR text extracted from ALTO XML |
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| `alto_xml` | string | Raw ALTO XML with full OCR structure |
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| `has_image` | bool | Whether page has image |
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| `has_alto` | bool | Whether page has ALTO XML |
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| `edition` | string | Edition name (e.g., "First edition") |
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| `volume_part` | string | Full volume description |
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| `publication_year` | string | Year of publication |
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| `editor` | string | Editor name |
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| `full_title` | string | Full bibliographic title |
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| `shelf_locator` | string | NLS shelf location |
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## Editions Included
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- First edition (1771)
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- Second edition (1778-1783)
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- Third edition (1788-1797)
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- Fourth edition (1801-1810)
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- Fifth edition (1815-1817)
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- Sixth edition (1820-1823)
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- Seventh edition (1830-1842)
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- Supplement editions
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## Source
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Original data from the [National Library of Scotland Data Foundry](https://data.nls.uk/data/digitised-collections/encyclopaedia-britannica/).
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