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Lorenzo Proietti

5 accepted papers

2025

Estimating Machine Translation Difficulty

EMNLP 2025

Machine translation quality has steadily improved over the years, achieving near-perfect translations in recent benchmarks.These high-quality outputs make it difficult to distinguish between state-of-the-art models and to identify areas for future improvement.In this context, automatically identifyi

2025

Has Machine Translation Evaluation Achieved Human Parity? The Human Reference and the Limits of Progress

ACL 2025short

In Machine Translation (MT) evaluation, metric performance is assessed based on agreement with human judgments. In recent years, automatic metrics have demonstrated increasingly high levels of agreement with humans. To gain a clearer understanding of metric performance and establish an upper bound,…

2024

Analyzing Homonymy Disambiguation Capabilities of Pretrained Language Models

COLING 2024main

Word Sense Disambiguation (WSD) is a key task in Natural Language Processing (NLP), aiming to assign the correct meaning (sense) to a word in context. However, traditional WSD systems rely on WordNet as the underlying sense inventory, often differentiating meticulously between subtle nuances of word…

2024

Beyond Correlation: Interpretable Evaluation of Machine Translation Metrics

EMNLP 2024main

Machine Translation (MT) evaluation metrics assess translation quality automatically. Recently, researchers have employed MT metrics for various new use cases, such as data filtering and translation re-ranking. However, most MT metrics return assessments as scalar scores that are difficult to interp…

2024

Guardians of the Machine Translation Meta-Evaluation: Sentinel Metrics Fall In!

ACL 2024long

Annually, at the Conference of Machine Translation (WMT), the Metrics Shared Task organizers conduct the meta-evaluation of Machine Translation (MT) metrics, ranking them according to their correlation with human judgments. Their results guide researchers toward enhancing the next generation of metr…