André F. T. Martins

IST-Unbabel Participation in the WMT20 Quality Estimation Shared Task

2020

We present the joint contribution of IST and Unbabel to the WMT 2020 Shared Task on Quality Estimation.Our team participated on all tracks (Direct Assessment, Post-Editing Effort, Document-Level), encompassing a total of 14 submissions.Our submitted …

The Explanation Game: Towards Prediction Explainability through Sparse\n Communication

2020 · arXiv (Cornell University)

Explainability is a topic of growing importance in NLP. In this work, we\nprovide a unified perspective of explainability as a communication problem\nbetween an explainer and a layperson about a classifier's decision. We use this\nframework to …

Tower: An Open Multilingual Large Language Model for Translation-Related Tasks

2024 · arXiv (Cornell University)

While general-purpose large language models (LLMs) demonstrate proficiency on multiple tasks within the domain of translation, approaches based on open LLMs are competitive only when specializing on a single task. In this paper, we propose …

Sparse Activations as Conformal Predictors

2025 · arXiv (Cornell University)

Conformal prediction is a distribution-free framework for uncertainty quantification that replaces point predictions with sets, offering marginal coverage guarantees (i.e., ensuring that the prediction sets contain the true label with a specified probability, in expectation). …

Construction-Based Reduction of Translationese for Low-Resource Languages: A Pilot Study on Bavarian

2025

Peiqin Lin, Marion Thaler, Daniela Goschala, Amir Hossein Kargaran, Yihong Liu, André F. T. Martins, Hinrich Schütze. Proceedings of the 7th Workshop on Research in Computational Linguistic Typology and Multilingual NLP. 2025.

Turning on the Turbo: Fast Third-Order Non-Projective Turbo Parsers

2018 · INDIGO (University of Illinois at Chicago)

We present fast, accurate, direct nonprojective dependency parsers with thirdorder features. Our approach uses AD3 , an accelerated dual decomposition algorithm which we extend to handle specialized head automata and sequential head bigram models. Experiments …

Adaptively Sparse Transformers

2019

Gonçalo M. Correia, Vlad Niculae, André F. T. Martins. Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP). 2019.