Vicomtech/irekier-corpus

IREKIER: An Easy Read Corpus for Basque and Spanish

This dataset contains Spanish (es) and Basque (eu) Easy Read articles from the Basque Government's transparency portal (Irekia) in two alignment granularities:

• doc-almt: document-level aligned pairs
• paragraph-almt: paragraph-level aligned pairs (train/dev/test)

Dataset structure

Document-level alignments (doc-almt)

• es/doc-almt/documents.json
• eu/doc-almt/documents.json

Each entry contains:

• id: document id
• src: complex,original document text
• tgt.seg: adapted segmented version
• tgt.no_seg: adapted non-segmented version

Paragraph-level alignments (paragraph-almt)

Spanish:

• es/paragraph-almt/train.json
• es/paragraph-almt/dev.json
• es/paragraph-almt/test.json

Basque:

• eu/paragraph-almt/train.json
• eu/paragraph-almt/dev.json
• eu/paragraph-almt/test.json

All paragraph files are JSON arrays of documents:

• id (string): document id
• alignments (array): list of aligned paragraph pairs for that document

Each item in alignments contains:

• src (string): source,complex paragraph text
• tgt (string): adapted paragraph text

Split-specific note:

• train.json alignments also include score (float similarity score)
• dev.json and test.json alignments contain only src and tgt

These files provide paragraph alignment data for training, development, and evaluation.

Full details of alignment process can be found in the Citation reference.

Languages

• Spanish (es)
• Basque (eu)

License

This dataset is distributed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license (CC BY-NC-SA 4.0).

Citation

If you use this dataset, please cite:

@inproceedings{calleja2026irekier,
  title = {{IREKIER: An Easy Read Corpus for Basque and Spanish}},
  author = {Calleja, Jesús and Etchegoyhen, Thierry},
  booktitle = {Proceedings of the 15th edition of the Language Resources and Evaluation Conference (LREC 2026)},
  note = {to appear}
  year = {2026}
}