---
license: cc0-1.0
task_categories:
  - text-generation
language:
  - en
pretty_name: Chrono pretrain (OpenAlex English articles through 2019)
size_categories:
  - n>1M
tags:
  - bittensor
  - sn38
  - chrono
  - openalex
  - text-generation
---

# Chrono pretrain — OpenAlex English article abstracts (through 2019)

Cutoff-honest scholarly abstracts from OpenAlex (`publication_date` ≤ 2019-12-31).
Filter: `has_abstract:true,language:en,type:article`.

Sliced from [jjjlimaus/openalex-en-articles](https://huggingface.co/datasets/jjjlimaus/openalex-en-articles)
(years 1800–2019). Later years (2020–present) are omitted.

Each row is JSON:

- `id`
- `text` (title + abstract)
- `date`
- `source`
- `license`
- `title`
- `doi`
- `type`

Abstracts reconstituted from `abstract_inverted_index`. Metadata is CC0 via OpenAlex;
publisher copyright may still apply to abstract wording — research use.

Layout: `years/YYYY/YYYY-MM.jsonl.gz`