Publications

2024

António Farinhas, Haau-Sing Li, André F. T. Martins.
"Reranking Laws for Language Generation: A Communication-Theoretic Perspective."
Advances in Neural Information Processing Systems (NeurIPS'24, spotlight), Vancouver, Canada, December 2024.
[pdf]
Gonçalo R. A. Faria, Sweta Agrawal, António Farinhas, Ricardo Rei, José G. C. de Souza, André F. T. Martins.
"QUEST: Quality-Aware Metropolis-Hastings Sampling for Machine Translation."
Advances in Neural Information Processing Systems (NeurIPS'24), Vancouver, Canada, December 2024.
[pdf]
Sweta Agrawal, António Farinhas, Ricardo Rei, André F.T. Martins.
"Can Automatic Metrics Assess High-Quality Translations?" Conference on Empirical Methods for Natural Language Processing (EMNLP'24), Miami, USA, November 2024.
[pdf]
Sweta Agrawal, José G. C. de Souza, Ricardo Rei, António Farinhas, Gonçalo Faria, Patrick Fernandes, Nuno M Guerreiro, André F.T. Martins.
"Modeling User Preferences with Automatic Metrics: Creating a High-Quality Preference Dataset for Machine Translation."
Conference on Empirical Methods for Natural Language Processing (EMNLP'24), Miami, USA, November 2024.
[pdf]
Emmanouil Zaranis, Nuno M. Guerreiro, Andre Martins.
"Analyzing Context Contributions in LLM-based Machine Translation." Conference on Empirical Methods for Natural Language Processing (Findings of EMNLP'24), Miami, USA, November 2024.
[pdf]
Marcos V. Treviso, Nuno M. Guerreiro, Sweta Agrawal, Ricardo Rei, José Pombal, Tania Vaz, Helena Wu, Beatriz Silva, Daan van Stigt, André F.T. Martins.
"xTower: A Multilingual LLM for Explaining and Correcting Translation Errors."
Conference on Empirical Methods for Natural Language Processing (Findings of EMNLP'24), Miami, USA, November 2024.
[pdf]
Hugo Pitorro, Pavlo Vasylenko, Marcos Treviso, André F.T. Martins.
"How Effective are State Space Models for Machine Translation?"
Conference of Machine Translation (WMT'24), Miami, USA, November 2024.
[pdf]
Duarte M. Alves, José Pombal, Nuno M. Guerreiro, Pedro H. Martins, João Alves, Amin Farajian, Ben Peters, Ricardo Rei, Patrick Fernandes, Sweta Agrawal, Pierre Colombo, José G.C. de Souza, André F.T. Martins.
"Tower: An Open Multilingual Large Language Model for Translation-Related Tasks."
Conference on Language Modeling (COLM'24, oral), Philadelphia, USA, 2024.
[pdf]
Margarida M. Campos, António Farinhas, Chrysoula Zerva, Mário A.T. Figueiredo, André F.T. Martins.
"Conformal Prediction for Natural Language Processing: A Survey."
Transactions of the Association for Computational Linguistics (TACL), 2024.
[pdf]
Chryssa Zerva and André F. T. Martins.
"Conformalizing Machine Translation Evaluation."
Transactions of the Association for Computational Linguistics (TACL), 2024.
[pdf]
Sweta Agarwal, Amin Farajian, Patrick Fernandes, Ricardo Rei, André F. T. Martins.
"Is Context Helpful for Chat Translation Evaluation?"
Transactions of the Association for Computational Linguistics (TACL), 2024.
[pdf]
Saul Santos, Vlad Niculae, Daniel C. McNamee, André F. T. Martins.
"Sparse and Structured Hopfield Networks."
International Conference on Machine Learning (ICML'24, spotlight), Vienna, Austria, July 2024.
[pdf]
Miguel Moura Ramos, Patrick Fernandes, António Farinhas, André F. T. Martins.
"Aligning Neural Machine Translation Models: Human Feedback in Training and Inference."
Conference of the European Association for Machine Translation (EAMT'24), Sheffield, UK, June 2024. [pdf]
António Farinhas, Chryssa Zerva, Dennis Ulmer, André F. T. Martins.
"Non-exchangeable Conformal Risk Control."
International Conference on Learning Representations (ICLR'24), May 2024.
[pdf]
Dennis Ulmer, Chryssa Zerva, André F. T. Martins.
"Non-exchangeable Conformal Language Generation with Nearest Neighbors"
Conference of the European Chapter of the Association for Computational Linguistics (EACL'24), St. Julians, Malta, March 2024.
[pdf]
Peiqin Lin, Chengzhi Hu, Zheyu Zhang, André F. T. Martins, Hinrich Schütze.
"mPLM-Sim: Unveiling Better Cross-Lingual Similarity and Transfer in Multilingual Pretrained Language Models."
Conference of the European Chapter of the Association for Computational Linguistics (EACL'24), St. Julians, Malta, March 2024.
[pdf]
Nuno M. Guerreiro, Ricardo Rei, Daan van Stigt, Luisa Coheur, Pierre Colombo, André F. T. Martins.
"xCOMET: Transparent Machine Translation Evaluation through Fine-grained Error Detection."
Transactions of the Association for Computational Linguistics (TACL), 2024.
[pdf]

2023

André F. T. Martins, Vlad Niculae, Daniel C. McNamee.
"Sparse Modern Hopfield Networks."
NeurIPS Workshop on Associative Memories \& Hopfield Networks, New Orleans, December 2023.
[pdf]
Patrick Fernandes, Daniel Deutsch, Mara Finkelstein, Parker Riley, André Martins, Graham Neubig, Ankush Garg, Jonathan Clark, Markus Freitag and Orhan Firat.
"The Devil Is in the Errors: Leveraging Large Language Models for Fine-grained Machine Translation Evaluation."
Conference of Machine Translation (WMT'23), Singapore, December 2023.
[pdf]
Duarte M. Alves, Nuno M. Guerreiro, João Alves, José Pombal, Ricardo Rei, José G. C. de Souza, Pierre Colombo, André F. T. Martins.
"Steering Large Language Models for Machine Translation with Finetuning and In-Context Learning."
Conference on Empirical Methods for Natural Language Processing (Findings), Singapore, December 2023.
[pdf]
Ricardo Rei, Nuno M. Guerreiro, José Pombal, Daan van Stigt, Marcos Treviso, Luisa Coheur, José G.C. de Souza, André F.T. Martins.
"Scaling up CometKiwi: Unbabel-IST 2023 Submission for the Quality Estimation Shared Task." Conference of Machine Translation (WMT'23), Singapore, December 2023.
[pdf]
António Farinhas, José G. C. de Souza, André F. T. Martins.
"An Empirical Study of Translation Hypothesis Ensembling with Large Language Models."
Conference on Empirical Methods for Natural Language Processing, Singapore, December 2023.
[pdf]
Patrick Fernandes, Aman Madaan, Emmy Liu, António Farinhas, Pedro H. Martins, Amanda Bertsch, José G. C. de Souza, Shuyan Zhou, Tongshuang Wu, Graham Neubig, André F. T. Martins.
"Bridging the gap: A survey on integrating (human) feedback for natural language generation."
Transactions of the Association for Computational Linguistics.
[pdf]
Nuno M. Guerreiro, Duarte Alves, Jonas Waldendorf, Barry Haddow, Alexandra Birch, Pierre Colombo, André F. T. Martins.
"Hallucinations in large multilingual translation models."
Transactions of the Association for Computational Linguistics.
[pdf]
Patrick Fernandes, Kayo Yin, Emmy Liu, André F. T. Martins, Graham Neubig.
"When Does Translation Require Context? A Data-driven, Multilingual Exploration."
Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
Best resource paper award.
Haau-Sing Li, Mohsen Mesgar, André F. T. Martins, Iryna Gurevych.
"Python Code Generation by Asking Clarification Questions." Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
Marcos Treviso, Alexis Ross, Nuno M. Guerreiro, André F. T. Martins.
"CREST: A Joint Framework for Rationalization and Counterfactual Text Generation."
Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
Ayyoob ImaniGooghari, Peiqin Lin, Amir Hossein Kargaran, Silvia Severini, Masoud Jalili Sabet, Nora Kassner, Chunlan Ma, Helmut Schmid, André F. T. Martins, François Yvon, Hinrich Schütze.
"Glot500: Scaling Multilingual Corpora and Language Models to 500 Languages."
Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
ACL 2023 Area Chair Award.
Ricardo Rei, Nuno M. Guerreiro, Marcos Treviso, Luisa Coheur, Alon Lavie, André F. T. Martins.
"The inside story: Towards better understanding of machine translation neural evaluation metrics."
Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
Nuno M. Guerreiro, Pierre Colombo, Pablo Piantanida, André F. T. Martins.
"Optimal transport for unsupervised hallucination detection in neural machine translation."
Annual Meeting of the Association for Computational Linguistics (ACL'23), Toronto, Canada, July 2023.
[pdf]
Pedro H. Martins, João Alves, Tânia Vaz, Madalena Gonçalves, Beatriz Silva, Marianna Buchicchio, José G. C. de Souza, André F. T. Martins.
"Empirical Assessment of kNN-MT for Real-World Translation Scenarios."
Proceedings of the Annual Conference of the European Association for Machine Translation (EAMT'23), Tampere, Finland, June 2023.
[pdf]
Taisiya Glushkova, Chrysoula Zerva, André F. T. Martins.
"BLEU Meets COMET: Combining Lexical and Neural Metrics Towards Robust Machine Translation Evaluation."
Proceedings of the Annual Conference of the European Association for Machine Translation (EAMT'23), Tampere, Finland, June 2023.
[pdf]
Marcos Treviso, Tianchu Ji, Ji-Ung Lee, Betty van Aken, Qingqing Cao, Manuel R. Ciosici, Michael Hassid, Kenneth Heafield, Sara Hooker, Pedro H. Martins, André F. T. Martins, Peter Milder, Colin Raffel, Edwin Simpson, Noam Slonim, Niranjan Balasubramanian, Leon Derczynski, Roy Schwartz.
"Efficient methods for natural language processing: a survey."
Transactions of the Association for Computational Linguistics (TACL).
[pdf]
Nuno M. Guerreiro, Elena Voita, André F. T. Martins.
"Looking for a needle in a haystack: A comprehensive study of hallucinations in neural machine translation." Conference of the European Chapter of the Association for Computational Linguistics (EACL'23), Dubrovnik, Croatia, May 2023.
[pdf]

2022

Patrick Fernandes, Marcos Treviso, Danish Pruthi, André F. T. Martins, Graham Neubig.
"Learning to Scaffold: Optimizing Model Explanations for Teaching."
Advances in Neural Information Processing Systems (NeurIPS'22), New Orleans, USA, November 2022.
[pdf]
Pedro Martins, Zita Marinho, André F. T. Martins.
"Chunk-based Nearest Neighbor Machine Translation."
Conference on Empirical Methods for Natural Language Processing, Abu Dhabi, December 2022.
[pdf]
Chrysoula Zerva, Taisiya Glushkova, André F. T. Martins.
"Disentangling Uncertainty in Machine Translation Evaluation."
Conference on Empirical Methods for Natural Language Processing, Abu Dhabi, December 2022.
[pdf]
Tsvetomila Mihaylova, Vlad Niculae, André F. T. Martins.
"Modeling Structure with Undirected Neural Networks."
International Conference on Machine Learning (ICML'22), Baltimore, USA, July 2022.
[pdf]
Patrick Fernandes, António Farinhas, Ricardo Rei, José G. C. Souza, Perez Ogayo, Graham Neubig, André F. T. Martins.
"Quality-Aware Decoding for Neural Machine Translation."
Annual Meeting of the North-American Chapter of the Association for Computational Linguistics (NAACL'22), Seattle, USA, July 2022.
[pdf]
Ben Peters, André F. T. Martins.
"Beyond characters: Subword-level morpheme segmentation."
NAACL Workshop on Computational Research in Phonetics, Phonology, and Morphology (SIGMORPHON'22), Seattle, USA, July 2022.
[pdf]
Ricardo Rei, Ana C. Farinha, José G. C. Souza, P. G. Ramos, André F. T. Martins, Luisa Coheur, Alon Lavie.
"Searching for COMETINHO: The Little Metric That Could."
Annual Conference of the European Association for Machine Translation (EAMT'22), Ghent, Belgium, June 2022.
Best Paper Award
[pdf]
Pedro Martins, Zita Marinho, André F. T. Martins.
"∞-former: Infinite Memory Transformer."
Annual Meeting of the Association for Computational Linguistics (ACL'22), Dublin, Ireland, May 2022.
[pdf]
Pedro H. Martins, Zita Marinho, André F. T. Martins.
"Efficient Machine Translation Domain Adaptation."
ACL Workshop on Semiparametric Methods in NLP: Decoupling Logic from Knowledge, Dublin, Ireland, May 2022.
[pdf]
Marcos Treviso, António Góis, Patrick Fernandes, Erick Fonseca, André F. T. Martins.
"Predicting attention sparsity in transformers."
ACL Workshop on Structured Prediction for Natural Language Processing (SPNLP'22), Dublin, Ireland, May 2022.
[pdf]
António Farinhas, Wilker Aziz, Vlad Niculae, André F. T. Martins.
"Sparse Communication via Mixed Distributions."
International Conference on Learning Representations (ICLR'22; selected for oral presentation), May 2022.
[pdf]
Gonçalo R. A. Faria, André F. T. Martins, Mário A. T. Figueiredo.
"Differentiable Causal Discovery Under Latent Interventions."
1st conference on Causal Learning and Reasoning (CLeaR'22), Eureka, USA, April 2022.
[pdf]
André F. T. Martins, Marcos Treviso, António Farinhas, Pedro M. Q. Aguiar, Mário A. T. Figueiredo, Mathieu Blondel, Vlad Niculae. "Sparse Continuous Distributions and Fenchel-Young Losses"
Journal of Machine Learning Research, 2022 (to appear).
[pdf]

2021

Taisiya Glushkova, Chrysoula Zerva, Ricardo Rei, André F. T. Martins.
"Uncertainty-Aware Machine Translation Evaluation"
Findings of the Conference on Empirical Methods in Natural Language Processing (EMNLP'21), November 2021.
[pdf]
Nuno M. Guerreiro, André F. T. Martins.
"SPECTRA: Sparse Structured Text Rationalization"
Conference on Empirical Methods in Natural Language Processing (EMNLP'21), November 2021.
[pdf]
Lucia Specia, Frédéric Blain, Marina Fomicheva, Chrysoula Zerva, Zhenhao Li, Vishrav Chaudhary and André F. T. Martins.
"Findings of the WMT 2021 Shared Task on Quality Estimation" Conference of Machine Translation (WMT'21), November 2021.
[pdf]
Chrysoula Zerva, Daan van Stigt, Ricardo Rei, Catarina Farinha, Pedro Ramos, José G. C. Souza, Taisiya Glushkova, Miguel Vera, Fábio Kepler and André F. T. Martins.
"IST-Unbabel 2021 Submission for the QE Shared Task"
Conference of Machine Translation (WMT'21), November 2021.
[pdf]
Ricardo Rei, Catarina Farinha, Chrysoula Zerva, Dann van Stigt, Craig Stewart, Pedro Ramos, Taisiya Glushkova, André F. T. Martins and Alon Lavie.
"Are References Really Needed? Unbabel-IST 2021 Submission for the Metrics Shared Task"
Conference of Machine Translation (WMT'21), November 2021.
[pdf]
Marcos V. Treviso, Nuno M. Guerreiro, Ricardo Rei, André F. T. Martins.
"IST-Unbabel 2021 Submission for the Explainable Quality Estimation Shared Task"
Workshop on "Evaluation & Comparison of NLP Systems" (Eval4NLP), November 2021.
Best Explainability Approach Award.
[pdf]
António Farinhas, André F. T. Martins, Pedro M. Q. Aguiar.
"Multimodal Continuous Visual Attention Mechanisms"
ICCV 2021 Visual Inductive Priors for Data-Efficient Deep Learning Workshop, October 2021.
[pdf]
Pedro H. Martins, Vlad Niculae, Zita Marinho, André F. T. Martins.
"Sparse and Structured Visual Attention"
IEEE International Conference on Image Processing (ICIP'21), Anchorage, United States, September 2021.
[pdf]
Patrick Fernandes, Kayo Yin, Graham Neubig, André F. T. Martins.
"Measuring and Increasing Context Usage in Context-Aware Machine Translation"
Conference of the Association for Computational Linguistics (ACL'21), August 2021.
[pdf]
Kayo Yin, Patrick Fernandes, Danish Pruthi, Aditi Chaudhary, André F. T. Martins, Graham Neubig.
"Do Context-Aware Translation Models Pay the Right Attention?"
Conference of the Association for Computational Linguistics (ACL'21), August 2021.
[pdf]
Ben Peters and André F. T. Martins.
"Smoothing and Shrinking the Sparse Seq2Seq Search Space (S7)."
Conference of the North American Chapter of the Association for Computational Linguistics (NAACL'21), June 2021.
[pdf]

2020

André F. T. Martins, António Farinhas, Marcos Treviso, Vlad Niculae, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Sparse and Continuous Attention Mechanisms."
Neural Information Processing Systems (NeurIPS'20, spotlight), December 2020.
[pdf]
Gonçalo M. Correia, Vlad Niculae, Wilker Aziz, and André F. T. Martins.
"Efficient Marginalization of Discrete and Structured Latent Variables via Sparsity."
Neural Information Processing Systems (NeurIPS'20, spotlight), December 2020.
[pdf]
Pedro Martins, Zita Marinho, and André F. T. Martins.
"Sparse Text Generation."
Conference on Empirical Methods in Natural Language Processing (EMNLP'20), November 2020.
[pdf]
Tsvetomila Mihaylova, Vlad Niculae, and André F. T. Martins.
"Understanding the mechanics of SPIGOT: Surrogate gradients for latent structure learning."
Conference on Empirical Methods in Natural Language Processing (EMNLP'20), November 2020.
[pdf]
Marcos Treviso and André F. T. Martins.
"The Explanation Game: Towards Prediction Explainability through Sparse Communication."
EMNLP Workshop on Analyzing and Interpreting Neural Networks for NLP (BlackboxNLP'20), November 2020.
[pdf]
M. Amin Farajian, António V. Lopes, André F. T. Martins, Sameen Maruf and Gholamreza Haffari.
"Findings of the WMT 2020 Shared Task on Chat Translation."
Conference on Machine Translation (WMT'20), November 2020.
[pdf]
Lucia Specia, Frédéric Blain, Marina Fomicheva, Erick Fonseca, Vishrav Chaudhary, Francisco Guzmán and André F. T. Martins.
"Findings of the WMT 2020 Shared Task on Quality Estimation."
Conference on Machine Translation (WMT'20), November 2020.
[pdf]
João Moura, Miguel Vera, Daan van Stigt, Fabio Kepler and André F. T. Martins.
"IST-Unbabel Participation in the WMT20 Quality Estimation Shared Task."
Conference on Machine Translation (WMT'20), November 2020.
[pdf]
Vlad Niculae and André F. T. Martins.
"LP-SparseMAP: Differentiable Relaxed Optimization for Sparse Structured Prediction."
International Conference on Machine Learning (ICML'20), July 2020.
[pdf]
Erick Fonseca and André F. T. Martins.
"Revisiting Higher-Order Dependency Parsers."
Annual Meeting of the Association for Computational Linguistics (ACL'20), July 2020.
[pdf]
Ben Peters and André F. T. Martins.
"DeepSPIN at SIGMORPHON 2020: One-Size-Fits-All Multilingual Models."
ACL Workshop on Computational Research in Phonetics, Phonology, and Morphology (SIGMORPHON'20), July 2020.
[pdf]
António Góis, Kyunghyun Cho, and André F. T. Martins.
"Learning Non-Monotonic Automatic Post-Editing of Translations from Human Orderings."
Annual Conference of the European Association for Machine Translation (EAMT'20), November 2020.
[pdf]
António Lopes, M. Amin Farajian, Rachel Bawden, Michael Zhang and André F. T. Martins.
"Document-level Neural MT: A Systematic Comparison."
Annual Conference of the European Association for Machine Translation (EAMT'20), November 2020.
[pdf]
Mathieu Blondel, André F. T. Martins, and Vlad Niculae.
"Learning with Fenchel-Young losses."
Journal of Machine Learning Research, 21 (2020) 1--69.
[pdf]

2019

Gonçalo M. Correia, Vlad Niculae, and André F. T. Martins.
"Adaptively Sparse Transformers."
Conference on Empirical Methods in Natural Language Processing (EMNLP'19), Hong-Kong, China, November 2019.
[pdf]
Erick Fonseca, Lisa Yankovskaya, André F. T. Martins, Mark Fishel, Christian Federmann.
"Findings of the WMT 2019 Shared Tasks on Quality Estimation."
Conference on Machine Translation (WMT 2019), Florence, Italy, August 2019.
[pdf]
Fabio Kepler, Jonay Trénous, Marcos Treviso, Miguel Vera, António Góis, M. Amin Farajian, António V. Lopes, André F. T. Martins.
"Unbabel's Participation in the WMT19 Translation Quality Estimation Shared Task."
Conference on Machine Translation (WMT 2019), Florence, Italy, August 2019.
Best results in the shared task.
[pdf]
António V. Lopes, M. Amin Farajian, Gonçalo M. Correia, Jonay Trénous, and André F. T. Martins.
"Unbabel's Submission to the WMT2019 APE Shared Task: BERT-Based Encoder-Decoder for Automatic Post-Editing."
Conference on Machine Translation (WMT 2019), Florence, Italy, August 2019.
Best results in the shared task.
[pdf]
António Góis and André F. T. Martins.
"Translator2Vec: Understanding and Representing Human Post-Editors."
Proceedings of Machine Translation Summit XVII Volume 1: Research Track (MT Summit 2019), Dublin, Ireland, August 2019.
[pdf] [dataset]
Ben Peters, Vlad Niculae, and André F. T. Martins.
"Sparse Sequence-to-Sequence Models."
Annual Meeting of the Association for Computational Linguistics (ACL'19), Florence, Italy, July 2019.
[pdf]
Gonçalo M. Correia and André F. T. Martins.
"A Simple and Effective Approach to Automatic Post-Editing with Transfer Learning."
Annual Meeting of the Association for Computational Linguistics (ACL'19), Florence, Italy, July 2019.
[pdf]
Fábio Kepler, Jonay Trénous, Marcos Treviso, Miguel Vera, and André F. T. Martins.
"Openkiwi: An open source framework for quality estimation."
Annual Meeting of the Association for Computational Linguistics (ACL'19), System Demonstrations, Florence, Italy, July 2019.
Best system demo paper award.
[pdf]
Ben Peters and André F. T. Martins.
"IT–IST at the SIGMORPHON 2019 Shared Task: Sparse Two-headed Models for Inflection."
ACL Workshop on Computational Research in Phonetics, Phonology, and Morphology (SIGMORPHON'19), Florence, Italy, July 2019.
Interpretability Prize.
[pdf]
Tsvetomila Mihaylova and André F. T. Martins.
"Scheduled Sampling for Transformers."
Annual Meeting of the Association for Computational Linguistics (ACL'19), Student Research Workshop, Florence, Italy, July 2019.
[pdf]
Pedro Henrique Martins, Zita Marinho, and André F. T. Martins.
"Joint Learning of Named Entity Recognition and Entity Linking."
Annual Meeting of the Association for Computational Linguistics (ACL'19), Student Research Workshop, Florence, Italy, July 2019.
[pdf]
Sameen Maruf, André F. T. Martins, and Gholamreza Haffari.
"Selective attention for context-aware neural machine translation."
Conference of the North American Chapter of the Association for Computational Linguistics (NAACL'19), Minneapolis, USA, June 2019.
[pdf]
Afonso Mendes, Shashi Narayan, Sebastião Miranda, Zita Marinho, André F. T. Martins, and Shay B. Cohen.
"Jointly extracting and compressing documents with summary state representations."
Conference of the North American Chapter of the Association for Computational Linguistics (NAACL'19), Minneapolis, USA, June 2019.
[pdf]
Mathieu Blondel, André F. T. Martins, and Vlad Niculae.
"Learning classifiers with Fenchel-Young losses: Generalized entropies, margins, and algorithms."
International Conference on Artificial Intelligence and Statistics (AISTATS'19), Okinawa, Japan.
In Kamalika Chaudhuri and Masashi Sugiyama, editors, Proceedings of Machine Learning Research, volume 89 of Proceedings of Machine Learning Research, pages 606–615. PMLR, 16–18 Apr 2019.
[pdf]

2018

Vlad Niculae, André F. T. Martins, and Claire Cardie.
"Towards Dynamic Computation Graphs via Sparse Latent Structure."
Conference on Empirical Methods in Natural Language Processing (EMNLP'18), Brussels, Belgium, November 2018.
[pdf]
Sameen Maruf, André F. T. Martins, and Gholamreza Haffari.
"Contextual Neural Model for Translating Bilingual Multi-Speaker Conversations."
Conference on Machine Translation (WMT'18), Brussels, Belgium, November 2018.
[pdf]
Lucia Specia, Frédéric Blain, Varvara Logacheva, Ramón Astudillo, and André F. T. Martins.
"Findings of the WMT 2018 Shared Task on Quality Estimation." Conference on Machine Translation (WMT'18), Brussels, Belgium, November 2018.
[pdf]
Ben Peters, Vlad Niculae, and André F. T. Martins.
"Interpretable Structure Induction Via Sparse Attention."
EMNLP Workshop on Analyzing and Interpreting Neural Networks for NLP (BlackboxNLP'18), Brussels, Belgium, November 2018.
[pdf]
Vlad Niculae, André F. T. Martins, Mathieu Blondel, and Claire Cardie.
"SparseMAP: Differentiable Sparse Structured Inference."
International Conference on Machine Learning (ICML'18), Stockholm, Sweden, July 2018.
[pdf]
Chaitanya Malaviya, Pedro Ferreira, and André F. T. Martins.
"Sparse and Constrained Attention for Neural Machine Translation."
Annual Meeting of the Association for Computational Linguistics (ACL'18), Melbourne, Australia, July 2018.
[pdf]
Marcin Junczys-Dowmunt, Roman Grundkiewicz, Tomasz Dwojak, Hieu Hoang, Kenneth Heafield, Tom Neckermann, Frank Seide, Ulrich Germann, Alham Fikri Aji, Nikolay Bogoychev, André F. T. Martins, and Alexandra Birch.
"Marian: Fast neural machine translation in C++."
Annual Meeting of the Association for Computational Linguistics (ACL'18), System Demonstrations, Melbourne, Australia, July 2018. [pdf]

2017

André F. T. Martins and Julia Kreutzer.
"Learning What’s Easy: Fully Differentiable Neural Easy-First Taggers."
Conference on Empirical Methods in Natural Language Processing (EMNLP'17), Copenhagen, Denmark, September 2017.
[pdf]
André F. T. Martins, Fábio N. Kepler and José L. Monteiro.
"Unbabel's Participation in the WMT17 Translation Quality Estimation Shared Task."
Conference on Machine Translation (WMT 2017), Copenhagen, Denmark, September 2017.
[draft pdf]
André F. T. Martins, Marcin Junczys-Dowmunt, Fábio Kepler, Ramon Astudillo, Chris Hokamp and Roman Grundkiewicz.
"Pushing the Limits of Translation Quality Estimation."
Transactions of the Association for Computational Linguistics, 5: 205--218, 2017.
[pdf]

2016

Zita Marinho, André F. T. Martins, Shay Cohen and Noah A. Smith.
"Semi-Supervised Learning of Sequence Models with Method of Moments."
Conference on Empirical Methods in Natural Language Processing (EMNLP'16), Austin, USA, November 2016.
[pdf]
André F. T. Martins, Ramon Astudillo, Chris Hokamp and Fábio Kepler.
"Unbabel's Participation in the WMT16 Word-Level Translation Quality Estimation Shared Task."
Conference on Machine Translation (WMT 2016), Berlin, Germany, August 2016.
Best results in the shared task.
pdf
Daniel C. Ferreira, André F. T. Martins, and Mariana S. C. Almeida.
"Jointly Learning to Embed and Predict with Multiple Languages."
Annual Meeting of the Association for Computational Linguistics (ACL'16), Berlin, Germany, August 2016.
[pdf]
André F. T. Martins and Ramon Astudillo.
"From Softmax to Sparsemax: A Sparse Model of Attention and Multi-Label Classification."
International Conference on Machine Learning (ICML'16), New York, USA, June 2016.
[pdf]

2015

Daniel Fernández-González and André F. T. Martins.
"Parsing as Reduction."
Annual Meeting of the Association for Computational Linguistics (ACL'15), Beijing, China, July 2015.
[pdf] | [code]
Mariana S. C. Almeida, Cláudia Pinto, Helena Figueira, Pedro Mendes, and André F. T. Martins.
"Aligning Opinions: Cross-Lingual Opinion Mining with Dependencies."
Annual Meeting of the Association for Computational Linguistics (ACL'15), Beijing, China, July 2015.
[pdf]
André F. T. Martins.
"Transferring Coreference Resolvers with Posterior Regularization."
Annual Meeting of the Association for Computational Linguistics (ACL'15), Beijing, China, July 2015.
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar, Noah A. Smith, Eric P. Xing.
"AD3: Alternating Directions Dual Decomposition for MAP Inference in Graphical Models."
Journal of Machine Learning Research, 16(Mar): 495--545, 2015.
[pdf] | [code]
Mariana S. C. Almeida and André F. T. Martins.
"Lisbon: Evaluating TurboSemanticParser on Multiple Languages and Out-of-Domain Data."
Proceedings of International Workshop on Semantic Evaluation (SemEval'15), task 18: Broad Coverage Semantic Dependency Parsing, Denver, USA, June 2015.
[pdf] | [code]

2014

Renato Negrinho and André F. T. Martins.
"Orbit Regularization."
Neural Information Processing Systems (NIPS'14), Montreal, Canada, December 2014.
[pdf] | [supplementary material]
André F. T. Martins.
"AD3: A Fast Decoder for Structured Prediction."
In Advanced Structured Prediction, Sebastian Nowozin, Peter V. Gehler, Jeremy Jancsary, and Christoph H. Lampert, Eds.
The MIT Press, 2014.
[pdf] | [code]
André F. T. Martins and Mariana S. C. Almeida.
"Priberam: A Turbo Semantic Parser with Second Order Features."
Proceedings of International Workshop on Semantic Evaluation (SemEval'14), task 8: Broad Coverage Semantic Dependency Parsing, Dublin, Ireland, August 2014.
[pdf] | [code]
Mariana S. C. Almeida, Miguel B. Almeida, and André F. T. Martins.
"A Joint Model For Quotation Attribution and Coreference Resolution."
Annual Meeting of the European Chapter of the Association for Computational Linguistics (EACL'14), Gothenburg, Sweden, April 2014.
[pdf]
Miguel B. Almeida, Mariana S. C. Almeida, André F. T. Martins, Helena Figueira, Pedro Mendes, and Cláudia Pinto.
"A New Multi-Document Summarization Corpus for European Portuguese."
Proceedings of the Language Resources and Evaluation Conference (LREC'14), Reykjavik, Iceland, May 2014.
[pdf]
Dipanjan Das, Desai Chen, André F. T. Martins, Nathan Schneider, and Noah A. Smith.
"Frame-Semantic Parsing."
Computational Linguistics 40:1, pages 9-56, 2014.
[pdf]

2013

André F. T. Martins, Miguel B. Almeida, and Noah A. Smith.
"Turning on the Turbo: Fast Third-Order Non-Projective Turbo Parsers."
Annual Meeting of the Association for Computational Linguistics (ACL'13), Sofia, Bulgaria, August 2013.
[pdf] | [code]
Miguel B. Almeida and André F. T. Martins.
"Fast and Robust Compressive Summarization with Dual Decomposition and Multi-Task Learning."
Annual Meeting of the Association for Computational Linguistics (ACL'13), Sofia, Bulgaria, August 2013.
[pdf]

2012

André F. T. Martins.
"The Geometry of Constrained Structured Prediction: Applications to Inference and Learning of Natural Language Syntax."
PhD Thesis, Carnegie Mellon University and Instituto Superior Tecnico.
Carnegie Mellon SCS Dissertation Award, Honorable Mention. [pdf]
Dipanjan Das, André F. T. Martins, and Noah A. Smith.
"An Exact Dual Decomposition Algorithm for Shallow Semantic Parsing with Constraints."
First Joint Conference on Lexical and Computational Semantics (*SEM 2012), Montreal, Canada.
[pdf]

2011

André F. T. Martins, Noah A. Smith, Mário A. T. Figueiredo, Pedro M. Q. Aguiar.
"Dual Decomposition With Many Overlapping Components."
Empirical Methods in Natural Language Processing (EMNLP'11), Edinburgh, UK, July 2011.
[pdf] | [supplementary material]
André F. T. Martins, Noah A. Smith, Mário A. T. Figueiredo, Pedro M. Q. Aguiar.
"Structured Sparsity in Structured Prediction."
Empirical Methods in Natural Language Processing (EMNLP'11), Edinburgh, UK, July 2011.
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar, Noah A. Smith, and Eric P. Xing.
"An Augmented Lagrangian Approach to Constrained MAP Inference."
International Conference on Machine Learning (ICML'11), Bellevue, Washington, USA, June 2011.
[pdf] | [supplementary material] | [code]
André F. T. Martins, Noah A. Smith, Eric P. Xing, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Online Learning of Structured Predictors with Multiple Kernels."
International Conference on Artificial Intelligence and Statistics (AISTATS'11), Ft Lauderdale, USA.
Geoffrey Gordon, David Dunson, and Miroslav Dudík, eds. JMLR W&CP, vol. 15, 2011.
[pdf]

2010

André F. T. Martins, Noah A. Smith, Eric P. Xing, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Augmented Dual Decomposition for MAP Inference."
NIPS Workshop in Optimization for Machine Learning, Whistler, Canada, December 2010.
[pdf]
André F. T. Martins, Noah A. Smith, Eric P. Xing, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Online MKL for Structured Prediction."
NIPS Workshop in New Directions in Multiple Kernel Learning, Whistler, Canada, December 2010.
[pdf]
André F. T. Martins, Noah A. Smith, Eric P. Xing, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"TurboParsers: Dependency Parsing by Approximate Variational Inference."
Empirical Methods in Natural Language Processing (EMNLP'10), Boston, USA, October 2010.
[pdf] | [extended, pdf] | [erratum!, txt]
André F. T. Martins, Kevin Gimpel, Noah A. Smith, Eric P. Xing, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Learning Structured Classifiers with Dual Coordinate Ascent"
Technical report CMU-ML-10-109.
[pdf]
M. Bicego, A. Perina, V. Murino, A. Martins, P. Aguiar, M. Figueiredo.
"Combining free energy score spaces with information theoretic kernels: application to scene classification."
IEEE International Conference on Image Processing (ICIP'10), Hong Kong, 2010.
M. Figueiredo, P. Aguiar, A. Martins, V. Murino, M. Bicego.
"Information theoretical kernels for generative embeddings based on hidden Markov models." Joint IAPR International Workshops on Structural, Syntactic, and Statistical Pattern Recognition (S+SSPR'10), Cesme, Izmir, Turkey, 2010.
M. Bicego, A. Martins, V. Murino, P. Aguiar, M. Figueiredo.
"2D shape recognition using information theoretic kernels."
IAPR International Conference on Pattern Recognition (ICPR'2010), Istanbul, Turkey, 2010.

2009

André F. T. Martins, Noah A. Smith, and Eric P. Xing.
"Concise Integer Linear Programming Formulations for Dependency Parsing."
Annual Meeting of the Association for Computational Linguistics (ACL'09), Singapore, August 2009.
Best Paper Award.
[pdf]
André F. T. Martins, Noah A. Smith, and Eric P. Xing.
"Polyhedral Outer Approximations with Application to Natural Language Parsing."
International Conference on Machine Learning (ICML'09), Montreal, Canada, June 2009.
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar, Noah A. Smith, and Eric P. Xing.
"Nonextensive Information Theoretic Kernels on Measures."
Journal of Machine Learning Research, 2009, vol.10, pp.935-975.
[pdf]
André F. T. Martins and Noah A. Smith.
"Summarization with a Joint Model for Sentence Extraction and Compression."
NAACL-HLT Workshop on Integer Linear Programming for NLP, Boulder, USA, June 2009.
[pdf]

2008

André F. T. Martins, Dipanjan Das, Noah A. Smith, and Eric P. Xing.
"Stacking dependency parsers."
Empirical Methods in Natural Language Processing (EMNLP'08), Honolulu, Hawaii, October 2008.
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar, Noah A. Smith, and Eric P. Xing.
"Nonextensive entropic kernels."
Technical report CMU-ML-08-106, 2008
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar, Noah A. Smith, and Eric P. Xing.
"Nonextensive entropic kernels."
International Conference on Machine Learning ICML'08, Helsinki, Finland, July 2008.
[pdf]
André F. T. Martins, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Nonextensive Generalizations of the Jensen-Shannon Divergence."
Submitted for publication, 2008.
[arXiv]
André F. T. Martins, Pedro M. Q. Aguiar, and Mário A. T. Figueiredo.
"Tsallis kernels on measures."
IEEE Information Theory Workshop ITW'08, Porto, Portugal, May 2008.
[pdf]

2007

Dipanjan Das, André F.T. Martins.
"A Survey on Automatic Text Summarization."
Literature Survey for the Language and Statistics II course at CMU, November, 2007.
[pdf]
C. Amaral, A. Cassan, H. Figueira, A. Martins, A. Mendes, P. Mendes, C. Pinto, D. Vidal.
"Priberam's Question Answering System in QA@CLEF 2007."
Working Notes for the Cross Language Evaluation Forum (CLEF), 2007.
[pdf]
André F. T. Martins, Mário A. T. Figueiredo, Pedro M. Q. Aguiar.
"Kernels and Similarity Measures for Text Classification."
In Proceedings 6th Conference on Telecommunications, Peniche, Portugal, 2007. [pdf]

2006

André F. T. Martins.
"Generative kernels."
Technical report, Inst. Sup. Técnico, UTL, Lisbon, Portugal.
[pdf]
A. Cassan, H. Figueira, A. Martins, A. Mendes, P. Mendes, C. Pinto and D. Vidal.
"Priberam's Question Answering System in a Cross-Language Environment."
CLEF, Lecture Notes in Computer Science, Vol. 4730, pp. 300-309, Springer, 2006.
Working notes version: [pdf]

2005

C. Amaral, H. Figueira, A. Martins, A. Mendes, P. Mendes, C. Pinto.
"Priberam's Question Answering System for Portuguese."
CLEF, Lecture Notes in Computer Science, Vol. 4022, pp. 410-419, Springer, 2005.
Working notes version: [pdf]
A. Martins.
"Orientação Automática na Baixa Pombalina: classes de equiprojectividade e estimação sequencial a partir de vídeo."
Lisbon, 2005 (unpublished manuscript in Portuguese).
[pdf]
A. Martins, P. Aguiar and M. Figueiredo.
"Orientation in Manhattan: Equiprojective Classes and Sequential Estimation."
IEEE Trans. on Pattern Analysis and Machine Intelligence (PAMI), vol. 27, no. 5, pp. 822-827, May 2005.
[pdf] | [movie #1] | [movie #2] | [movie #3]

2004

A. Martins, A. Mendes, C. Amaral, C. Pinto and D. Laurent.
"Design and Implementation of a Semantic Search Engine for Portuguese."
Proceedings of 4th International Conference on Language Resources and Evaluation (LREC), Lisbon, Portugal, May 2004.
[pdf]

2003

A. Martins, P. Aguiar and M. Figueiredo.
"Navigating in Manhattan: 3D Orientation From Video Without Correspondences."
Proceedings of IEEE International Conference on Image Processing (ICIP), Barcelona, Spain, September 2003.
[pdf]