---
pretty_name: Translations
license: other
license_name: per-upstream-corpus
task_categories:
  - translation
language:
  - en
  - az
  - be
  - bg
  - ca
  - da
  - et
  - fi
  - gu
  - hu
  - kn
  - ml
  - "no"
  - or
  - pa
  - ro
  - sk
  - ta
  - ur
tags:
  - parallel-corpus
  - bitext
  - mtdata
  - opus
  - machine-translation
size_categories:
  - 100M<n<1B
configs:
  - config_name: aze-eng
    data_files:
      - split: train
        path: data/aze-eng/*.parquet
  - config_name: bel-eng
    data_files:
      - split: train
        path: data/bel-eng/*.parquet
  - config_name: bul-eng
    data_files:
      - split: train
        path: data/bul-eng/*.parquet
  - config_name: cat-eng
    data_files:
      - split: train
        path: data/cat-eng/*.parquet
  - config_name: dan-eng
    data_files:
      - split: train
        path: data/dan-eng/*.parquet
  - config_name: eng-est
    data_files:
      - split: train
        path: data/eng-est/*.parquet
  - config_name: eng-fin
    data_files:
      - split: train
        path: data/eng-fin/*.parquet
  - config_name: eng-guj
    data_files:
      - split: train
        path: data/eng-guj/*.parquet
  - config_name: eng-hun
    data_files:
      - split: train
        path: data/eng-hun/*.parquet
  - config_name: eng-kan
    data_files:
      - split: train
        path: data/eng-kan/*.parquet
  - config_name: eng-mal
    data_files:
      - split: train
        path: data/eng-mal/*.parquet
  - config_name: eng-ori
    data_files:
      - split: train
        path: data/eng-ori/*.parquet
  - config_name: eng-pan
    data_files:
      - split: train
        path: data/eng-pan/*.parquet
  - config_name: eng-ron
    data_files:
      - split: train
        path: data/eng-ron/*.parquet
  - config_name: eng-slk
    data_files:
      - split: train
        path: data/eng-slk/*.parquet
  - config_name: eng-tam
    data_files:
      - split: train
        path: data/eng-tam/*.parquet
  - config_name: eng-urd
    data_files:
      - split: train
        path: data/eng-urd/*.parquet
---

# natgillin/translations

Parquet bitext corpus assembled from upstream mtdata / OPUS releases.

## Schema

| column        | type   | description |
| ------------- | ------ | ----------- |
| `source`      | string | source-language sentence |
| `target`      | string | target-language sentence |
| `source_lang` | string | source language, ISO 639-3 (3-char), e.g. `bel`, `cat`, `eng` |
| `target_lang` | string | target language, ISO 639-3 (3-char) |
| `origin`      | string | upstream sub-corpus, e.g. `opus-ccmatrix`, `opus-nllb`, `opus-gnome`, `elr`, `mtdata-merged` |

Source / target ordering is fixed by **alphabetical ISO 639-3 code**
(`bel` before `eng`, `cat` before `eng`). This keeps the pair name
deterministic and bidirectional joins unambiguous.

## Configs / layout

One config per language pair. The OPUS sub-corpus is encoded as a
row-level column (`origin`), not as a separate config.

```
data/
  cat-eng/
    opus-ccmatrix-00000-of-00200.parquet
    opus-nllb-00000-of-00200.parquet
    opus-gnome-<file_hash>-00000.parquet
    mtdata-merged-00000-of-00200.parquet
    ...
  bel-eng/
    ...
```

Every pair is pinned to `split: train` so that filenames containing
substrings like `-test-` (which occur in some ELRC sub-corpora) aren't
auto-detected as a test split.

## Origins

The `origin` column carries the upstream sub-corpus identifier. Common
values:

- `mtdata-merged` — mtdata's deduplicated merged bitext for the pair
- `opus-<source>` — one upstream OPUS sub-corpus, e.g. `opus-ccmatrix`,
  `opus-nllb`, `opus-ccaligned`, `opus-multiccaligned`, `opus-wikimatrix`,
  `opus-eubookshop`, `opus-kde4`, `opus-gnome`, `opus-neulab-tedtalks`,
  `opus-elrc-*`, `opus-tatoeba`, `opus-ted2020`, …
- `elr` — ELRA / ELR slice of the pair when distinct from the merged top-level
- `unknown` — rows whose upstream URL didn't match a known OPUS pattern

## License

Inherits per-corpus terms from the upstream OPUS sources. Cite OPUS:
<https://opus.nlpl.eu>.