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Neural machine translation model for translating from Finnish (fi) to English (en).

This model is part of the OPUS-MT project, an effort to make neural machine translation models widely available and accessible for many languages in the world. All models are originally trained using the amazing framework of Marian NMT, an efficient NMT implementation written in pure C++. The models have been converted to pyTorch using the transformers library by huggingface. Training data is taken from OPUS and training pipelines use the procedures of OPUS-MT-train.

    title = "{OPUS}-{MT} {--} Building open translation services for the World",
    author = {Tiedemann, J{\"o}rg  and Thottingal, Santhosh},
    booktitle = "Proceedings of the 22nd Annual Conference of the European Association for Machine Translation",
    month = nov,
    year = "2020",
    address = "Lisboa, Portugal",
    publisher = "European Association for Machine Translation",
    url = "https://aclanthology.org/2020.eamt-1.61",
    pages = "479--480",

    title = "The Tatoeba Translation Challenge {--} Realistic Data Sets for Low Resource and Multilingual {MT}",
    author = {Tiedemann, J{\"o}rg},
    booktitle = "Proceedings of the Fifth Conference on Machine Translation",
    month = nov,
    year = "2020",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2020.wmt-1.139",
    pages = "1174--1182",

Model info


A short example code:

from transformers import MarianMTModel, MarianTokenizer

src_text = [
    "Kolme kolmanteen on kaksikymmentäseitsemän.",
    "Heille syntyi poikavauva."

model_name = "pytorch-models/opus-mt-tc-big-fi-en"
tokenizer = MarianTokenizer.from_pretrained(model_name)
model = MarianMTModel.from_pretrained(model_name)
translated = model.generate(**tokenizer(src_text, return_tensors="pt", padding=True))

for t in translated:
    print( tokenizer.decode(t, skip_special_tokens=True) )

You can also use OPUS-MT models with the transformers pipelines, for example:

from transformers import pipeline
pipe = pipeline("translation", model="Helsinki-NLP/opus-mt-tc-big-fi-en")
print(pipe("Kolme kolmanteen on kaksikymmentäseitsemän."))


langpair testset chr-F BLEU #sent #words
fin-eng tatoeba-test-v2021-08-07 0.72298 57.4 10690 80552
fin-eng flores101-devtest 0.62521 35.4 1012 24721
fin-eng newsdev2015 0.56232 28.6 1500 32012
fin-eng newstest2015 0.57469 29.9 1370 27270
fin-eng newstest2016 0.60715 34.3 3000 62945
fin-eng newstest2017 0.63050 37.3 3002 61846
fin-eng newstest2018 0.54199 27.1 3000 62325
fin-eng newstest2019 0.59620 32.7 1996 36215
fin-eng newstestB2016 0.55472 27.9 3000 62945
fin-eng newstestB2017 0.58847 31.1 3002 61846


The work is supported by the European Language Grid as pilot project 2866, by the FoTran project, funded by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 771113), and the MeMAD project, funded by the European Union’s Horizon 2020 Research and Innovation Programme under grant agreement No 780069. We are also grateful for the generous computational resources and IT infrastructure provided by CSC -- IT Center for Science, Finland.

Model conversion info

  • transformers version: 4.16.2
  • OPUS-MT git hash: f084bad
  • port time: Tue Mar 22 14:52:19 EET 2022
  • port machine: LM0-400-22516.local
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