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WindyTranslate/
translate-windy-hplt-en-gu

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

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

finetune

cc-by-4.0

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translate-windy-hplt-en-gu — en to gu

CTranslate2 INT8 bilingual translation model, derived from HPLT/translate-en-gu-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	Helsinki-NLP/opus-100 en-gu (hub), 2000 sentence pairs
Tensors modified	36
Max absolute weight delta	4.441e-05

Provenance

base   model.bin sha256  f05916daca7a7c0e9c606e7e95d846a80ac2f7ffcad37901780f102e393495ec
this   model.bin sha256  fe60877e3536f314e12e83dafb13cc59048c1465a63a3ff323bb86d05ab583d2

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	29.41	50.23
upstream, pre-fog	28.08	—

Limitations

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

WindyTranslate/translate-windy-hplt-en-gu