Eugénio Ribeiro
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Eugénio RibeiroProfessor Auxiliar | SA-HLT
Eugénio Ribeiro is an Assistant Professor in the Department of Information Science and Technology (ISTA) at Iscte - University Institute of Lisbon, an integrated researcher at INESC-ID Lisboa, and an associate researcher at ISTAR-Iscte. He obtained his BSc (2010), MSc (2012), and PhD (2023) degrees in Computer Science and Engineering from Instituto Superior Técnico, with his PhD being awarded with distinction and honor. His research interests encompass a broad range of topics in Artificial Intelligence and Machine Learning, with a primary focus on Natural Language Processing. He has contributed to multiple research projects and authored several publications in international journals and scientific events. He has been recognized for his research and teaching skills through best paper awards, top placements in research challenges, and teaching excellence awards. Additionally, he has been actively involved in organizing scientific events, serving as a reviewer, participating in knowledge-transfer projects, supervising students, and providing training in various contexts.
- Natural Language Processing
- AI for Education and Readability
- AI for Mental Health
- Dialog Systems
- Knowledge Extraction
- Computational Social Science
Total Publications: 62
Article (Author)
- A Cognitive Network Approach to Exploring Semantic and Emotional Patterns in Anxiety and Depression Narratives
Cláudia Calaboiça, Anita Santos, Liliana Meira, Eugénio Ribeiro, Andreia Sofia Teixeira, Tiago Bento Ferreira,
Cognitive Therapy and Research, DOI 10.1007/s10608-026-10730-5, March 2026 - Aprendizado por Transferência para Correçao Automática de Redaçao
Igor Silveira, Eugénio Ribeiro, Nuno J. Mamede, Jorge Baptista,
Linguamática, vol. 17, n. 2, pages 99-116, DOI 10.21814/lm.17.2.493, December 2025 - Story Generation from Visual Inputs: Techniques, Related Tasks, and Challenges
Daniel Oliveira, Eugénio Ribeiro, David Martins de Matos,
Information, vol. 16, n. 9, DOI 10.3390/info16090812, September 2025 - Exploring Few-Shot Approaches to Automatic Text Complexity Assessment in European Portuguese
Eugénio Ribeiro, David Antunes, Nuno J. Mamede, Jorge Baptista,
Journal of the Brazilian Computer Society, vol. 31, n. 1, pages 690–710, DOI 10.5753/jbcs.2025.5820, August 2025 - Avaliação Automática do Nível de Complexidade de Textos em Português Europeu
Eugénio Ribeiro, Nuno J. Mamede, Jorge Baptista,
Linguamática, vol. 16, n. 2, pages 121-145, DOI 10.21814/lm.16.2.449, November 2024 - Automatic Recognition of the General-Purpose Communicative Functions defined by the ISO 24617-2 Standard for Dialog Act Annotation
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Journal of Artificial Intelligence Research (JAIR), vol. 73, pages 397-436, DOI 10.1613/jair.1.13280, January 2022 - Semantic frame induction through the detection of communities of verbs and their arguments
Eugénio Ribeiro, Andreia Sofia Teixeira, Ricardo Ribeiro, David Martins de Matos,
Applied Network Science, vol. 5, DOI 10.1007/s41109-020-00312-z, September 2020 - Deep Dialog Act Recognition using Multiple Token, Segment, and Context Information Representations
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Journal of Artificial Intelligence Research, vol. 66, pages 861-899, December 2019 - Reconhecimento de Actos de Diálogo Hierárquicos e Multi-Etiqueta em Dados em Espanhol
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Linguamática, vol. 11, n. 1, pages 17-40, DOI 10.21814/lm.11.1.278, July 2019 - A Multilingual and Multidomain Study on Dialog Act Recognition Using Character-Level Tokenization
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Information, vol. 10, n. 3, DOI 10.3390/info10030094, March 2019
In Proceedings (Author)
- ComplexityMT: Benchmarking the Interaction Between Text Complexity and Machine Translation
Joseph Imperial, Junhong Liang, Belal Shoer, Abdullah Barayan, Rodrigo Wilkens, Omar Mussa, Dawn Knight, Eugénio Ribeiro, Ekaterina Kochmar, Sowmya Vajjala, Fernando Alva-Manchego, Harish Tayyar Madabushi,
Findings of the Association for Computational Linguistics: EMNLP 2026, Association for Computational Linguistics, pages 9269-9283, October 2026 - Evaluating Prompting Strategies for Clinical Information Extraction in Portuguese using LangExtract
Bruno Rogério S. dos Santos, Eugénio Ribeiro, Leonardo Sampaio Rocha,
Anais do XXIII Encontro Nacional de Inteligência Artificial e Computacional, SBC, pages 2113-2124, Porto Alegre, RS, Brasil, October 2026 - BERT-Based Classification of Cross-Linguistic MCQs According to the Bloom Taxonomy
João Francisco Botas, Ana Rita Peixoto, Eugénio Ribeiro,
15th Symposium on Languages, Applications and Technologies (SLATE 2026), Open Access Series in Informatics (OASIcs), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, vol. 144, pages 4:1-4:17, Dagstuhl, Germany, July 2026 - Cost-Effective Hate Speech Detection in Portuguese Using Lightweight LLMs
Mauro Jorge Costa Cardoso, Eugénio Ribeiro, Fernando Batista,
15th Symposium on Languages, Applications and Technologies (SLATE 2026), Open Access Series in Informatics (OASIcs), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, vol. 144, pages 9:1-9:16, Dagstuhl, Germany, July 2026 - Polarizations in Static Word Embeddings: Investigating Bias in Marginalized Dialects of Portuguese
Raimundo Juracy Campos Ferro Junior, Eugénio Ribeiro, Leonardo Sampaio Rocha,
15th Symposium on Languages, Applications and Technologies (SLATE 2026), Open Access Series in Informatics (OASIcs), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, vol. 144, pages 7:1-7:15, Dagstuhl, Germany, July 2026 - Cross-Language Text Readability Assessment: Leveraging Multilingual Models for Improved Performance in CEFR-Level Classification
Eugénio Ribeiro, Jorge Baptista,
15th Symposium on Languages, Applications and Technologies (SLATE 2026), Open Access Series in Informatics (OASIcs), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, vol. 144, pages 3:1-3:13, Dagstuhl, Germany, July 2026 - Proficiency-Controlled Text Simplification in European Portuguese: A Preliminary Study using Prompting Approaches
Eugénio Ribeiro, David Antunes, Nuno J. Mamede, Jorge Baptista,
Joint Workshop on Readability and Text Simplification (READIxTSAR) @ LREC 2026, pages 151-163, May 2026 - Book Complexity Level Assignment in French and Portuguese
Jorge Baptista, David Antunes, Wafa Aissa, Julien Zakhia Doueihi, Trang Pham Tran Hanh, Eugénio Ribeiro, Thomas François, Raquel Amaro,
Joint Workshop on Readability and Text Simplification (READIxTSAR) @ LREC 2026, pages 12-25, May 2026 - Portho: A Corpus-Based Resource of Orthographic Neighbors in European Portuguese
Eugénio Ribeiro, David Antunes, Nuno J. Mamede, Jorge Baptista,
International Conference on Computational Processing of Portuguese (PROPOR), vol. 1, pages 406-415, April 2026 - From Complexity Scores to Readable Texts: iRead4Skills for Adult Literacy in Portuguese
Jorge Baptista, Eugénio Ribeiro, Nuno J. Mamede, David Antunes, Raquel Amaro,
International Conference on Computational Processing of Portuguese (PROPOR), vol. 2, pages 5-7, April 2026 - Lexicon-Grammar Web
Jorge Baptista, David Antunes, Nuno J. Mamede, Eugénio Ribeiro,
International Conference on Computational Processing of Portuguese (PROPOR), vol. 2, pages 8-10, April 2026 - The iRead4Skills Intelligent Complexity Analyzer
Wafa Aissa, Raquel Amaro, David Antunes, Thibault Bañeras-Roux, Jorge Baptista, Alejandro Catala, Luís Correia, Thomas François, Marcos Garcia González, Mario Izquierdo-Álvarez, Nuno J. Mamede, Vasco Martins, Miguel Neves, Eugénio Ribeiro, Sandra Rodriguez Rey, Elodie Vanzeveren,
Conference on Empirical Methods in Natural Language Processing (EMNLP), November 2025 - UniversalCEFR: Enabling Open Multilingual Research on Language Proficiency Assessment
Joseph Imperial, Abdullah Barayan, Regina Stodden, Rodrigo Wilkens, Ricardo Muñoz Sánchez, Lingyun Gao, Melissa Torgbi, Dawn Knight, Gail Forey, Reka R. Jablonkai, Ekaterina Kochmar, Robert Reynolds, Eugénio Ribeiro, Horacio Saggion, Elena Volodina, Sowmya Vajjala, Thomas François, Fernando Alva-Manchego, Harish Tayyar Madabushi,
Conference on Empirical Methods in Natural Language Processing (EMNLP), November 2025 - INESC-ID @ eRisk 2025: Exploring Fine-Tuned, Similarity-Based, and Prompt-Based Approaches to Depression Symptom Identification
Diogo A.P. Nunes, Eugénio Ribeiro,
CLEF 2025 Working Notes, CEUR-WS, pages 1474--1485, September 2025 - The iRead4Skills Text Complexity Analyzer for European Portuguese
Eugénio Ribeiro, David Antunes, Nuno J. Mamede, Jorge Baptista,
INForum, September 2025 - Portuguese Far-Right Discourse on Social Media: Insights from Topic Modeling
Mauro Jorge Costa Cardoso, Eugénio Ribeiro, Fernando Batista,
Symposium on Languages, Applications and Technologies (SLATE), June 2025 - iRead4Skills @ IberSPEECH 2024: Project presentation and developments for the Portuguese language
Jorge Baptista, Eugénio Ribeiro, Nuno J. Mamede,
IberSPEECH, pages 297--299, November 2024 - Automatic Text Readability Assessment in European Portuguese
Eugénio Ribeiro, Nuno J. Mamede, Jorge Baptista,
International Conference on Computational Processing of Portuguese (PROPOR), pages 97--107, March 2024 - Text Readability Assessment in European Portuguese: A Comparison of Classification and Regression Approaches
Eugénio Ribeiro, Nuno J. Mamede, Jorge Baptista,
International Conference on Computational Processing of Portuguese (PROPOR), pages 551-557, March 2024 - Exploring the Automated Scoring of Narrative Essays in Brazilian Portuguese using Transformer Models
Eugénio Ribeiro, Nuno J. Mamede, Jorge Baptista,
International Conference on Computational Processing of Portuguese (PROPOR), vol. 2, March 2024 - Automatic Recognition of the General-Purpose Communicative Functions Defined by the ISO 24617-2 Standard for Dialog Act Annotation (Extended Abstract)
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
International Joint Conference on Artificial Intelligence (IJCAI), pages 6948-6953, Macao, August 2023 - Active Learning Improves the Teacher’s Experience: A Case Study in a Language Grounding Scenario
Filipe Vaz Reynaud, Eugénio Ribeiro, David Martins de Matos,
IberSPEECH 2022, ISCA, pages 141-145, ISCA, Granada, November 2022 - Using Topic Information to Improve Non-exact Keyword-Based Search for Mobile Applications
Eugénio Ribeiro, Ricardo Ribeiro, Fernando Batista, João oliveira,
Information Processing and Management of Uncertainty in Knowledge-Based Systems, 18th International Conference, IPMU 2020, Communications in Computer and Information Science, Springer, vol. 1237, pages 373-386, Springer, June 2020 - Mapping the Dialog Act Annotations of the LEGO Corpus into ISO 24617-2 Communicative Functions
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Proceedings of the 12th Conference on Language Resources and Evaluation (LREC 2020), ELRA, pages 531–539, ELRA, May 2020 - Semantic Frame Induction as a Community Detection Problem
Eugénio Ribeiro, Andreia Sofia Teixeira, Ricardo Ribeiro, David Martins de Matos,
Complex Networks 2019, Springer, pages 274-285, Springer, Lisbon, Portugal, December 2019 - L2F/INESC-ID at SemEval-2019 Task 2: Unsupervised Lexical Semantic Frame Induction using Contextualized Word Representations
Eugénio Ribeiro, Vânia Mendonça, Ricardo Ribeiro, David Martins de Matos, Alberto Sardinha, Ana Lúcia Santos, Luísa Coheur,
Proceedings of the 13th International Workshop on Semantic Evaluation (SemEval-2019), ACL, pages 130-136, ACL, Minneapolis, Minnesota, USA, May 2019 - End-to-End Multi-Level Dialog Act Recognition
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
IberSPEECH 2018, ISCA, pages 301-305, ISCA, Barcelona, November 2018 - A Study on Dialog Act Recognition Using Character-Level Tokenization
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
Artificial Intelligence: Methodology, Systems, and Applications, 18th International Conference, AIMSA 2018, LNAI, Springer, pages 93-103, Springer, Varna, Bulgaria, September 2018 - A Curiosity Model for Artificial Agents
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
European Conference on Artificial Life (ECAL), MIT Press, pages 561-568, MIT Press, Lyon, France, September 2017 - Automatic Detection of Hyperarticulated Speech
Eugénio Ribeiro, Fernando Batista, Isabel Trancoso, Ricardo Ribeiro, David Martins de Matos,
IberSPEECH 2016, Lecture Notes in Computer Science, Springer International Publish, vol. 10077, pages 182--191, Springer International Publish, Lisbon, November 2016 - Assessing User Expertise in Spoken Dialog System Interactions
Eugénio Ribeiro, Fernando Batista, Isabel Trancoso, José Lopes, Ricardo Ribeiro, David Martins de Matos,
IberSPEECH 2016, Lecture Notes in Computer Science, Springer International Publish, vol. 10077, pages 245--254, Springer International Publish, Lisbon, November 2016 - Exploiting Phone Log-Likelihood Ratio Features for the Detection of the Native Language of Non-Native English Speakers
Alberto Abad, Eugénio Ribeiro, Fábio Natanael Kepler, Ramon Fernandez Astudillo, Isabel Trancoso,
Interspeech 2016, San Francisco, US, September 2016 - SPA: Web-based Platform for easy Access to Speech Processing Modules
Fernando Batista, Pedro dos Santos Lopes Curto, Isabel Trancoso, Alberto Abad, Jaime Rodrigues Ferreira, Eugénio Ribeiro, Helena Moniz, David Martins de Matos, Ricardo Ribeiro,
LREC, European Language Resources Association (ELRA), pages 3886--3892, European Language Resources Association (ELRA), Portorož, Slovenia, May 2016 - Combining Multiple Approaches to Predict the Degree of Nativeness
Eugénio Ribeiro, Jaime Rodrigues Ferreira, Julia Olcoz, Alberto Abad, Helena Moniz, Fernando Batista, Isabel Trancoso,
Interspeech 2015, pages 488-492, Dresden, Germany, September 2015
Proceedings (Editor)
- Atas do 16º Simpósio Nacional de Informática - INForum 2025
Filipe Araújo, Eugénio Ribeiro,
, Zenodo, ISBN 10.5281/zenodo.19640655, September 2026 - 15th Symposium on Languages, Applications and Technologies (SLATE 2026)
Fernando Batista, Eugénio Ribeiro, Ricardo Ribeiro, André L. Santos,
, Open Access Series in Informatics (OASIcs), Schloss Dagstuhl – Leibniz-Zentrum für Informatik, ISBN 10.4230/OASIcs.SLATE.2026, Dagstuhl, Germany, July 2026 - Proceedings of the Joint Workshop on Readability and Text Simplification (READIxTSAR) @ LREC 2026
Matthew Shardlow, Thomas François, Raquel Amaro, Jorge Baptista, Rémi Cardon, Eugénio Ribeiro, Horacio Saggion, Regina Stodden, Amalia Todirascu, Rodrigo Wilkens,
, ELRA Language Resources Association (ELRA), ISBN 10.63317/3odyoa9tpigg, May 2026 - Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 2
Marlo Souza, Iria de-Dios-Flores, Diana Santos, Larissa Freitas, Jackson Wilke da Cruz Souza, Eugénio Ribeiro,
, ISBN 979-8-89176-387-6, April 2026 - Proceedings of the 17th International Conference on Computational Processing of Portuguese (PROPOR 2026) - Vol. 1
Marlo Souza, Iria de-Dios-Flores, Diana Santos, Larissa Freitas, Jackson Wilke da Cruz Souza, Eugénio Ribeiro,
, ISBN 979-8-89176-387-6, April 2026
Technical Report (Author)
- iRead4Skills WP4 - Report on Readability Features
Alice Pintard, Thomas François, Jorge Baptista, Raquel Amaro, Marcos Garcia González, Eugénio Ribeiro, Rodrigo Wilkens,
TechnicalReport, INESC-ID Lisboa, Centro de Linguística da Universidade Nova de Lisboa, Université Catholique de Louvain, October 2023
Miscellaneous (Author)
- Story Generation from Visual Inputs: Techniques, Related Tasks, and Challenges
Daniel Oliveira, Eugénio Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/2406.02748, web, June 2024 - Towards Learning Through Open-Domain Dialog
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/2202.03040, February 2022 - Automatic Recognition of the General-Purpose Communicative Functions defined by the ISO 24617-2 Standard for Dialog Act Annotation
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/2003.03556, March 2020 - Hierarchical Multi-Label Dialog Act Recognition on Spanish Data
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1907.12316, July 2019 - Deep Dialog Act Recognition using Multiple Token, Segment, and Context Information Representations
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1807.08587, July 2018 - A Study on Dialog Act Recognition using Character-Level Tokenization
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1805.07231, May 2018 - Assessing User Expertise in Spoken Dialog System Interactions
Eugénio Ribeiro, Fernando Batista, Isabel Trancoso, José Lopes, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1701.05011, January 2017 - Mapping the Dialog Act Annotations of the LEGO Corpus into the Communicative Functions of ISO 24617-2
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1612.01404, December 2016 - The Influence of Context on Dialogue Act Recognition
Eugénio Ribeiro, Ricardo Ribeiro, David Martins de Matos,
, https://arxiv.org/abs/1506.00839, June 2015
Thesis (Author)
- Towards Artificial Entities that Learn Through Dialog: Intention-Based Knowledge Extraction and Learning
Eugénio Ribeiro, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal, Thesis, February 2023 - Situated Dialog for speaking Robots
Eugénio Ribeiro, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal, Thesis, November 2012
Total Supervisions: 7
Master's Theses
- Text Mining and semantic classification of board games using NLP
Marco João
Eugénio Ribeiro (advisor), Pedro Mariano (coadvisor)
Master's Thesis, ISCTE, 2024-09-25 - Ongoing - Prescriptive Maintenance: Using NLP to Identify and Prevent Payment Incidents
João Mário Deitado Saraiva
Ricardo Ribeiro (advisor), Eugénio Ribeiro (coadvisor)
Master's Thesis, ISCTE, 2024-12-02 - 2026-07-17 - Análise e Normalização de Transcrições Médicas através de PLN
David Bernardes Dias
Eugénio Ribeiro (advisor), José Barateiro (coadvisor)
Master's Thesis, INESC-ID Lisboa, ISCTE, 2024-10-27 - 2025-11-20 - Unveiling the Far-Right's Political Ascent in Portugal: An NLP and AI Approach
Mauro Jorge Costa Cardoso
Fernando Batista (advisor), Eugénio Ribeiro (coadvisor)
Master's Thesis, ISCTE, 2024-11-28 - 2025-11-04 - Impact of Cinematic Aspects on Ratings: A Sentiment Analysis of Movie Reviews
Catarina Sousa
Eugénio Ribeiro (advisor),
Master's Thesis, ISCTE, 2024-10-28 - 2025-10-30 - Revisiting natural language processing tasks for European Portuguese: taking advantage of large language models
Miguel Gonçalves
Luísa Coheur (advisor), Eugénio Ribeiro (coadvisor)
Master's Thesis, Departamento de Engenharia Informática, Instituto Superior Técnico, Universidade de Lisboa, 2023-09-20 - 2024-11-14 - Domain learning through dialog
Filipe Vaz Reynaud
David Martins de Matos (advisor), Eugénio Ribeiro (coadvisor)
Master's Thesis, Instituto Superior Técnico, Universidade de Lisboa, 2020-09-01 - 2022-06-01
Total Projects: 1
International Projects
- iRead4Skills - Intelligent Reading Improvement System for Fundamental and Transversal Skills Development
Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, European Commission, Societal Digital Transformation, 2023-03-01 - 2026-02-28