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WindyTranslate/
translate-windy-hplt-uk-en

Name: translate-windy-hplt-uk-en
Availability: InStock

HPLT/translate-uk-en-v2.0-hplt_opus

finetune

cc-by-4.0

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translate-windy-hplt-uk-en — uk to en

CTranslate2 INT8 bilingual translation model, derived from HPLT/translate-uk-en-v2.0-hplt_opus (the HPLT project, CC-BY-4.0).

CC-BY-4.0 permits commercial use and modification and requires attribution; this notice provides it. Windstorm Labs did not train the base model.

Recovery note

HPLT publishes native Marian (.npz + .spm + .vocab) and marks its repos inference: false. An earlier conversion of this model to transformers format corrupted the weights, producing untranslatable output, and the model was written off. It was recovered on 2026-07-26 by converting the original .npz with the official Marian converter. The model was always fine; the conversion was not.

What was changed

A deliberately minimal LoRA fine-tune ("windy hallmark") merged into the base weights.


Rank / alpha	8 / 16
Learning rate / steps	2.5e-06 / 50
Target modules	`q_proj`, `v_proj`
Seed	42 (reproducible)
Training data	opus100_uk-en (clinic cache), 2000 sentence pairs
Tensors modified	36
Max absolute weight delta	3.596e-05

Provenance

base   model.bin sha256  bd6038faf2c7b62599dd6a25b370d92b7ef390d15c12ad156c8b1bc689f4562a
this   model.bin sha256  03611cd2fa4275936c1fe692426e43dddbf49efd97a9ef2731e49e0af24f0411

Verified on the quantized artifact you download, not merely internal weights.

Evaluation

FLORES-200 devtest, 200 sentences, beam 4, CTranslate2 INT8 on CPU. Metrics: spBLEU (flores200 tokenizer) + chrF (word_order=0).

	spBLEU	chrF
this model	36.85	61.17
upstream, pre-fog	36.08	—

Limitations

One language pair only (uk to en).
FLORES-200 is news and encyclopedic prose; it says little about conversational register.
No human evaluation was performed.

WindyTranslate/translate-windy-hplt-uk-en