safetensors marian translation en cs license:cc-by-nc-sa-4.0 region:us
---
language:
- en
- cs
license: cc-by-nc-sa-4.0
pipeline_tag: translation
---

# Opus Tatoeba | English -> Czech

* dataset: opus
* model: transformer
* source language(s): eng
* target language(s): ces
* model: transformer
* pre-processing: normalization + SentencePiece (spm32k,spm32k)
* download: [opus-2021-02-19.zip](https://object.pouta.csc.fi/Tatoeba-MT-models/eng-ces/opus-2021-02-19.zip)
* test set translations: [opus-2021-02-19.test.txt](https://object.pouta.csc.fi/Tatoeba-MT-models/eng-ces/opus-2021-02-19.test.txt)
* test set scores: [opus-2021-02-19.eval.txt](https://object.pouta.csc.fi/Tatoeba-MT-models/eng-ces/opus-2021-02-19.eval.txt)

## Benchmarks

| testset | BLEU  | chr-F | #sent | #words | BP |
|---------|-------|-------|-------|--------|----|
| newssyscomb2009.eng-ces 	| 23.4 	| 0.513 	| 502 	| 10032 	| 0.992 |
| news-test2008.eng-ces 	| 20.7 	| 0.488 	| 2051 	| 42484 	| 0.993 |
| newstest2009.eng-ces 	| 21.9 	| 0.502 	| 2525 	| 55533 	| 0.992 |
| newstest2010.eng-ces 	| 22.1 	| 0.507 	| 2489 	| 52958 	| 0.996 |
| newstest2011.eng-ces 	| 23.3 	| 0.511 	| 3003 	| 65653 	| 0.966 |
| newstest2012.eng-ces 	| 20.7 	| 0.483 	| 3003 	| 65456 	| 0.951 |
| newstest2013.eng-ces 	| 24.9 	| 0.518 	| 3000 	| 57250 	| 0.970 |
| newstest2015-encs.eng-ces 	| 24.4 	| 0.527 	| 2656 	| 45931 	| 1.000 |
| newstest2016-encs.eng-ces 	| 27.5 	| 0.546 	| 2999 	| 57013 	| 1.000 |
| newstest2017-encs.eng-ces 	| 22.7 	| 0.506 	| 3005 	| 54461 	| 0.986 |
| newstest2018-encs.eng-ces 	| 22.4 	| 0.506 	| 2983 	| 54772 	| 1.000 |
| newstest2019-encs.eng-ces 	| 23.8 	| 0.517 	| 1997 	| 43373 	| 0.992 |
| Tatoeba-test.eng-ces 	| 47.8 	| 0.663 	| 10000 	| 65288 	| 0.988 |