---
license: cc0-1.0
language:
- multilingual
tags:
- crossref
- affiliations
data_files:
- split: author
  path: data/author-*.parquet
- split: editor
  path: data/editor-*.parquet
- split: translator
  path: data/translator-*.parquet
- split: chair
  path: data/chair-*.parquet
- split: institution
  path: data/institution-*.parquet
- split: project_investigator
  path: data/project_investigator-*.parquet
- split: project_lead_investigator
  path: data/project_lead_investigator-*.parquet
- split: project_co_lead_investigator
  path: data/project_co_lead_investigator-*.parquet
- split: all
  path: data/all-*.parquet
- split: normalized
  path:
  - data/normalized-00000-of-00034.parquet
  - data/normalized-00001-of-00034.parquet
  - data/normalized-00002-of-00034.parquet
  - data/normalized-00003-of-00034.parquet
  - data/normalized-00004-of-00034.parquet
  - data/normalized-00005-of-00034.parquet
  - data/normalized-00006-of-00034.parquet
  - data/normalized-00007-of-00034.parquet
  - data/normalized-00008-of-00034.parquet
  - data/normalized-00009-of-00034.parquet
  - data/normalized-00010-of-00034.parquet
  - data/normalized-00011-of-00034.parquet
  - data/normalized-00012-of-00034.parquet
  - data/normalized-00013-of-00034.parquet
  - data/normalized-00014-of-00034.parquet
  - data/normalized-00015-of-00034.parquet
  - data/normalized-00016-of-00034.parquet
  - data/normalized-00017-of-00034.parquet
  - data/normalized-00018-of-00034.parquet
  - data/normalized-00019-of-00034.parquet
  - data/normalized-00020-of-00034.parquet
  - data/normalized-00021-of-00034.parquet
  - data/normalized-00022-of-00034.parquet
  - data/normalized-00023-of-00034.parquet
  - data/normalized-00024-of-00034.parquet
  - data/normalized-00025-of-00034.parquet
  - data/normalized-00026-of-00034.parquet
  - data/normalized-00027-of-00034.parquet
  - data/normalized-00028-of-00034.parquet
  - data/normalized-00029-of-00034.parquet
  - data/normalized-00030-of-00034.parquet
  - data/normalized-00031-of-00034.parquet
  - data/normalized-00032-of-00034.parquet
  - data/normalized-00033-of-00034.parquet
---

# Crossref unique affiliations

Exact organization strings extracted from Crossref snapshot `2026-07`.

For the nine exact-string splits, no trimming, case folding, or Unicode normalization is performed. Repeated leaf
occurrences are counted, and empty decoded strings alone are excluded.

<!-- normalized-split:start -->
## Normalized split

The `normalized` split groups the exact strings in `all` after applying this
normalization contract:

1. Transliterate Unicode text to ASCII with Unidecode.
2. Convert letters to lowercase.
3. Remove punctuation while preserving internal whitespace.
4. Trim surrounding whitespace.

Rows that become empty are excluded and counted in
`normalization_metadata.json`. Each output row contains the normalized string,
the contributing Crossref sources in registry order, the summed occurrence
count, and the number of distinct raw affiliations that collapsed into it.
<!-- normalized-split:end -->