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Translation Quality Estimation (QE) is the task of predicting the quality of machine translation (MT) output without any reference. This task has gained increasing attention as an important component in the practical applications of MT. In…

Computation and Language · Computer Science 2024-03-05 Fatemeh Azadi , Heshaam Faili , Mohammad Javad Dousti

Quality Estimation (QE) is an important component of the machine translation workflow as it assesses the quality of the translated output without consulting reference translations. In this paper, we discuss our submission to the WMT 2021 QE…

Computation and Language · Computer Science 2021-09-10 Shaika Chowdhury , Naouel Baili , Brian Vannah

Quality estimation (QE) is the task of automatically evaluating the quality of translations without human-translated references. Calculating BLEU between the input sentence and round-trip translation (RTT) was once considered as a metric…

Computation and Language · Computer Science 2020-04-30 Jihyung Moon , Hyunchang Cho , Eunjeong L. Park

Insufficient modeling of human preferences within the reward model is a major obstacle for leveraging human feedback to improve translation quality. Fortunately, quality estimation (QE), which predicts the quality of a given translation…

Computation and Language · Computer Science 2024-03-19 Zhiwei He , Xing Wang , Wenxiang Jiao , Zhuosheng Zhang , Rui Wang , Shuming Shi , Zhaopeng Tu

Most studies on word-level Quality Estimation (QE) of machine translation focus on language-specific models. The obvious disadvantages of these approaches are the need for labelled data for each language pair and the high cost required to…

Computation and Language · Computer Science 2021-06-02 Tharindu Ranasinghe , Constantin Orasan , Ruslan Mitkov

Recent advances in statistical machine translation via the adoption of neural sequence-to-sequence models empower the end-to-end system to achieve state-of-the-art in many WMT benchmarks. The performance of such machine translation (MT)…

Computation and Language · Computer Science 2018-11-20 Kai Fan , Jiayi Wang , Bo Li , Fengming Zhou , Boxing Chen , Luo Si

Quality Estimation (QE) is the task of evaluating the quality of a translation when reference translation is not available. The goal of QE aligns with the task of corpus filtering, where we assign the quality score to the sentence pairs…

Computation and Language · Computer Science 2023-06-07 Akshay Batheja , Pushpak Bhattacharyya

Word-level quality estimation (WQE) aims to automatically identify fine-grained error spans in machine-translated outputs and has found many uses, including assisting translators during post-editing. Modern WQE techniques are often…

Computation and Language · Computer Science 2025-11-18 Gabriele Sarti , Vilém Zouhar , Malvina Nissim , Arianna Bisazza

Quality estimation (QE)-the automatic assessment of translation quality-has recently become crucial across several stages of the translation pipeline, from data curation to training and decoding. While QE metrics have been optimized to…

Computation and Language · Computer Science 2025-06-04 Emmanouil Zaranis , Giuseppe Attanasio , Sweta Agrawal , André F. T. Martins

Recent Quality Estimation (QE) models based on multilingual pre-trained representations have achieved very competitive results when predicting the overall quality of translated sentences. Predicting translation errors, i.e. detecting…

Computation and Language · Computer Science 2021-08-30 Marina Fomicheva , Lucia Specia , Nikolaos Aletras

Machine Translation Quality Estimation is a notoriously difficult task, which lessens its usefulness in real-world translation environments. Such scenarios can be improved if quality predictions are accompanied by a measure of uncertainty.…

Computation and Language · Computer Science 2016-07-01 Daniel Beck , Lucia Specia , Trevor Cohn

Current Machine Translation systems achieve very good results on a growing variety of language pairs and data sets. However, it is now well known that they produce fluent translation outputs that often can contain important meaning errors.…

Computation and Language · Computer Science 2023-06-28 Vibhuti Kumari , Narayana Murthy Kavi

Quality Estimation (QE) aims to assess the quality of machine translation (MT) outputs without relying on reference translations, making it essential for real-world, large-scale MT evaluation. Large Language Models (LLMs) have shown…

Computation and Language · Computer Science 2026-02-10 Archchana Sindhujan , Girish A. Koushik , Shenbin Qian , Diptesh Kanojia , Constantin Orăsan

A major challenge in the practical use of Machine Translation (MT) is that users lack guidance to make informed decisions about when to rely on outputs. Progress in quality estimation research provides techniques to automatically assess MT…

Computation and Language · Computer Science 2023-10-27 Nikita Mehandru , Sweta Agrawal , Yimin Xiao , Elaine C Khoong , Ge Gao , Marine Carpuat , Niloufar Salehi

Quality estimation (QE) plays a crucial role in machine translation (MT) workflows, as it serves to evaluate generated outputs that have no reference translations and to determine whether human post-editing or full retranslation is…

Computation and Language · Computer Science 2026-03-13 Assaf Siani , Anna Kernerman , Ilan Kernerman

Several neural-based metrics have been recently proposed to evaluate machine translation quality. However, all of them resort to point estimates, which provide limited information at segment level. This is made worse as they are trained on…

Computation and Language · Computer Science 2022-03-28 Taisiya Glushkova , Chrysoula Zerva , Ricardo Rei , André F. T. Martins

Current state-of-the-art Quality Estimation (QE) in machine translation relies on massive, proprietary LLMs, raising data privacy concerns. We demonstrate that smaller, open-source LLMs (<30B parameters) are a viable, cost-effective and…

Computation and Language · Computer Science 2026-05-18 Kamil Guttmann , Zofia Fraś , Artur Nowakowski , Krzysztof Jassem

Machine Translation (MT) and Quality Estimation (QE) perform well in general domains but degrade under domain mismatch. This dissertation studies how to adapt MT and QE systems to specialized domains through a set of data-focused…

Computation and Language · Computer Science 2026-03-27 Javad Pourmostafa Roshan Sharami

This paper investigates the reference-less evaluation of machine translation for low-resource language pairs, known as quality estimation (QE). Segment-level QE is a challenging cross-lingual language understanding task that provides a…

Computation and Language · Computer Science 2025-01-09 Archchana Sindhujan , Diptesh Kanojia , Constantin Orasan , Shenbin Qian

Word-level quality estimation (QE) methods aim to detect erroneous spans in machine translations, which can direct and facilitate human post-editing. While the accuracy of word-level QE systems has been assessed extensively, their usability…

Computation and Language · Computer Science 2025-11-18 Gabriele Sarti , Vilém Zouhar , Grzegorz Chrupała , Ana Guerberof-Arenas , Malvina Nissim , Arianna Bisazza