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Tumbuka to Swedish translation model translate-tum-sv

Open machine translation from Tumbuka into Swedish, published by Windstorm Labs on Hugging Face.

Task: Translation: Tumbuka → Swedish
Languages: Tumbuka tum, Swedish sv
Lineage: OPUS-MT
Format: transformers (Marian), safetensors
Hugging Face: WindyTranslate/translate-tum-sv
Last updated on HF: 2026-08-04

Quality

Benchmark	chrF++	BLEU	Band	Measured
FLORES-200 dev, 48 sentences	21.35	2.50	Limited	2026-08-04

A screening score on 48 sentences, not a publication result. Bands: Excellent ≥ 60, Good 45–60, Usable 30–45, Limited 15–30, Not recommended < 15. Method and caveats.

Recorded output (sentence 1, first 110 characters)

Source: Pa Mande, ŵasayansi ŵakufuma ku yunivesite yakusanda vya minkhwara ya Stanford University School of Medicine ŵ…
Reference: I måndags meddelade forskare från Stanford University School of Medicine att man tagit fram ett nytt diagnosti…
This model: På måndagen rapporterade forskare från professor University of tingens ordning att det enda som krävs är att m

How to run

Shell

pip install transformers sentencepiece torch

Python

from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

repo = "WindyTranslate/translate-tum-sv"
tok = AutoTokenizer.from_pretrained(repo)
model = AutoModelForSeq2SeqLM.from_pretrained(repo)

batch = tok(["<Tumbuka text>"], return_tensors="pt", padding=True)
print(tok.batch_decode(model.generate(**batch), skip_special_tokens=True)[0])

Tested: Pattern run on 2026-10-01 against WindyTranslate/translate-tc-big-en-fr with transformers 4.57.6 and 5.18.0 on CPU ("Où se trouve la gare ?"); multi-target token prefix run against translate-tc-bible-big-mul-deu_eng_nld. Not run on every model individually.

Licence and attribution

Licence: Apache-2.0
Upstream: Helsinki-NLP/opus-mt-tum-sv
Upstream licence: Apache-2.0
Attribution: Based on OPUS-MT model Helsinki-NLP/opus-mt-tum-sv by Helsinki-NLP (Language Technology Research Group, University of Helsinki). Licensed Apache-2.0.

Copy this into your NOTICE file (or equivalent) when you ship the model:

NOTICE

This product uses the model WindyTranslate/translate-tum-sv
(https://huggingface.co/WindyTranslate/translate-tum-sv), published by Windstorm Labs (https://windstormlabs.com).
Based on OPUS-MT model Helsinki-NLP/opus-mt-tum-sv by Helsinki-NLP (Language Technology Research Group, University of Helsinki). Licensed Apache-2.0.
Windstorm Labs modified the upstream weights; the model card describes what was changed.
Licensed under the Apache License, Version 2.0: https://www.apache.org/licenses/LICENSE-2.0

This is a convenience, not legal advice. See Licensing.

Related models

Model	chrF++ (FLORES-200 dev)	Licence
Swedish to Tumbuka translate-sv-tum	21.4 Limited	Apache-2.0
English to Swedish translate-en-sv	64.7 Excellent	Apache-2.0
Dutch to Swedish translate-nl-sv	54.3 Good	Apache-2.0
Romanian to Swedish translate-ro-sv	54.2 Good	Apache-2.0
Finnish to Swedish translate-fi-sv	51.6 Good	Apache-2.0
Bulgarian to Swedish translate-bg-sv	51.1 Good	Apache-2.0
French to Swedish translate-fr-sv	51.1 Good	Apache-2.0
Slovak to Swedish translate-sk-sv	51.1 Good	Apache-2.0