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Pterodactyl: Pushing the Limits of Efficient Automated Translation Evaluation

2026-11-10 18:41:37
Evelyn Y. Garland, Carola F. Berger
arXiv_CL
         
Abstract

In this paper, we present 1020 Group's submission to the WMT26 shared task on automated quality evaluation. Our system, Pterodactyl, was engineered specifically for subtasks 2 and 3, that is, segment-level quality score prediction and the detection of error-free segments. Pterodactyl is a highly customizable, ultra-low cost system optimized for binary classification in translation triage and data curation. It is based on an LLM-as-a-judge approach, with prompt engineering and model selection guided by ROC analysis. We also developed several variants of Pterodactyl that were specifically adapted for subtasks 3.

Abstract (translated)

URL

https://arxiv.org/abs/2611.14480

PDF

https://arxiv.org/pdf/2611.14480.pdf

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