Datasets:

ZurichNLP
/

mediomatix

license: cc-by-nc-sa-4.0
language:
  - rm
configs:
  - config_name: default
    data_files:
      - split: train
        path: train.jsonl
      - split: validation
        path: valid.jsonl
      - split: test
        path: test.jsonl
      - split: no_surm
        path: no_surm.jsonl

General Information

Release of the Mediomatix corpus, prepared by UZH and PHGR, to be used for research purposes only.

Each segment is presented as part of a multi-parallel alignment. For the full, unaligned Mediomatix data in each idiom's schoolbooks, see here .

We use the following Romansh idiom codes as columns:

Sursilvan: rm-sursilv
Sutsilvan: rm-sutsilv
Surmiran: rm-surmiran
Puter: rm-puter
Vallader: rm-vallader

Book names are encoded in the book column as follows:

The first digit refers to the school year of the book
The next refers to the book volums for that school year
The two letter code indicates whether the segment comes from the student workbook ("wb") or teacher's commentary ("tc")
Example: Book "5.1_tc" refers to teacher's commentary for Volume 1 of the year 5 schoolbook.

How to Use

To access all four splits, use the following code:

from datasets import load_dataset

# Load aligned dataset

mediomatix = load_dataset("ZurichNLP/mediomatix")

# Access Train set:

train_set = mediomatix['train']

# Access Validation set:

val_set = mediomatix['validation']

# Access Test set:

test_set = mediomatix['test']

# Access no-rm-surmiran split:

no_surm = mediomatix['no_surm']

Citation

@inproceedings{hopton-etal-2026-mediomatix,
    title = "The Mediomatix Corpus: Parallel Data for {R}omansh Language Varieties via Comparable Schoolbooks",
    author = {Hopton, Zachary William  and
      Vamvas, Jannis  and
      B{\"u}chler, Andrin  and
      Rutkiewicz, Anna  and
      Cathomas, Rico  and
      Sennrich, Rico},
    editor = "Demberg, Vera  and
      Inui, Kentaro  and
      Marquez, Llu{\'i}s",
    booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {EACL} 2026",
    month = mar,
    year = "2026",
    address = "Rabat, Morocco",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.findings-eacl.16/",
    pages = "290--306",
    ISBN = "979-8-89176-386-9"
}