Datasets:

LabID-base
/

OpenAlex-Afillation

license: cc-by-4.0
language:
  - en
  - zh
  - de
  - fr
  - es
  - it
  - pt
  - ja
  - ko
  - ar
  - ru
  - nl
  - pl
  - tr
tags:
  - affiliations
  - nlp
  - bibliometrics
  - openalex
  - ner
  - institution-disambiguation
  - academic
  - text
pretty_name: OpenAlex Affiliation Dataset
size_categories:
  - 1M<n<10M
task_categories:
  - token-classification
  - text-classification
configs:
  - config_name: 2025-12
    data_files: data/2025-12/*.csv

OpenAlex Affiliation Dataset

This dataset provides raw and deduplicated academic affiliation strings from scholarly works published in December 2025. Affiliation strings are the raw, author-written institutional descriptions (e.g., "Department of Computer Science, MIT, Cambridge, MA, USA") that appear in academic papers — before any normalization or entity resolution.

What are raw affiliation strings?

Affiliation strings are the institutional descriptions authors include in their papers, before any normalization or entity resolution:

Department of Computer Science, Stanford University, Stanford, CA 94305, USA
Institut fur Physik, Humboldt-Universitat zu Berlin, 12489 Berlin, Germany
Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brasil

Use cases

Institution disambiguation / NER — parse and normalize to known entities (ROR, GRID, Wikidata)
NLP training data — multilingual academic text for span detection, entity linking
Bibliometrics — institutional analytics, collaboration networks
Affiliation normalization — training data for models like AffilGood, S2AFF

Data source & provenance

Source: OpenAlex — fully open index of scholarly works by OurResearch. CC BY 4.0.

Pipeline: labid-base/openalex-pipeline

Each chunk is deduplicated independently. work_id is the first work in which each string appeared within the chunk.

Quick start

from datasets import load_dataset

ds = load_dataset("LabID-base/OpenAlex-Afillation", "2025-12")
print(ds["train"][0])
# {"work_id": "https://openalex.org/W...", "raw_affiliation_string": "Department of..."}

Dataset statistics

Month	Collection date	Works	Total entries	Unique strings	Chunks
2025-12	2026-03-27	704,702	3,595,056	1,557,802	71

Schema

Column	Type	Description
`work_id`	string	OpenAlex work ID (e.g. `https://openalex.org/W2741809807`)
`raw_affiliation_string`	string	Raw affiliation text as written by the author

Directory structure

data/
  2025-12/
    works_2025_12_chunk_0001.csv
    ...
    works_2025_12_chunk_0071.csv   (71 chunks, ~22K strings each)

Update schedule

Updated monthly. Each update adds a new data/{YYYY}-{MM}/ folder.

Release	Period	Status
v1	2025-12	Available
v2	2026-01	Planned

Citation

@misc{priem2022openalex,
  title={OpenAlex: A fully-open index of the world's research works},
  author={Priem, Jason and Piwowar, Heather and Orr, Richard},
  year={2022},
  eprint={2205.01833},
  archivePrefix={arXiv}
}