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Nuno Guimarães is currently a researcher at the Laboratory of Artificial Intelligence and Decision Support (LIAAD), an R&D unit of INESC-TEC Research Laboratory. He is part of the HealthFromPortugal (HfPT) project and was the Co-PI of the Pticola project (CPCA - IAC/AV/594794/2023). In addition, he is also an invited professor at the Faculty of Sciences at the University of Porto. Nuno was awarded a PhD studentship by FCT (SFRH/BD/129708/2017) to tackle the detection of false information on social networks. He completed his Ph.D. at the Faculty of Sciences University of Porto with the thesis entitled “Towards realistic scenarios concerning the identification of unreliable information in social networks”. Previously, Nuno was a researcher in REMINDS (UTAP-ICDT/EEI-CTP/0022/2014) - where he tackled the problem of detecting journalistically relevant information in social media - and AFINA-TE (PTDC/DTP-DES/1328/2012) - where he developed solutions to monitor and educate children to a healthier lifestyle through the exposition of information, interactive applications and educational games. Nuno has over 20 published papers distributed between international peer-review conferences, journals, and book chapters. His main research topics are Natural Language Processing, Large Language Models, Narrative Extraction, and Fake News Detection.
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Identification

Personal identification

Full name
Nuno Ricardo Pinheiro da Silva Guimarães

Citation names

  • Guimarães, Nuno

Author identifiers

Ciência ID
9F1F-08AA-AC00
ORCID iD
0000-0003-2854-2891

Email addresses

  • nuno.r.guimaraes@inesctec.pt (Professional)

Websites

Knowledge fields

  • Exact Sciences - Computer and Information Sciences - Computer Sciences

Languages

Language Speaking Reading Writing Listening Peer-review
Portuguese (Mother tongue)
English Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
Education
Degree Classification
2024/11/11 - 2024/11/15
Concluded
 Formação Profissional de Essential Project Management (Outros)
Associação Portuguesa de Gestão e Engenharia Industrial, Portugal
 Aprovado
2017/09/01 - 2022/06/21
Concluded
 Ciência de Computadores (Doutoramento)
Universidade do Porto Faculdade de Ciências, Portugal
"Towards realistic scenarios concerning the identification of unreliable information in social networks" (THESIS/DISSERTATION)
 Aprovado
2014/09/01 - 2016/11/01
Concluded
 Ciência de Computadores (Mestrado)
Major in Área de especialização: Ciência de Computadores (sem especialização definida)
Universidade do Porto Faculdade de Ciências, Portugal
"Lexicon Expansion System for Domain and Time Oriented Sentiment Analysis" (THESIS/DISSERTATION)
 16 valores
2009/09/01 - 2014/06/01
Concluded
 Ciência de Computadores (Licenciatura)
Universidade do Porto Faculdade de Ciências, Portugal
Affiliation

Science

Category
Host institution 		Employer
2023/01/01 - Current Contracted Researcher (Research) Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência, Portugal
Laboratório de Inteligência Artificial e Apoio à Decisão, Portugal
2022/07/01 - 2022/12/31 Postdoc (Research) Universidade do Porto Faculdade de Ciências, Portugal
Universidade do Porto Faculdade de Ciências, Portugal

Teaching in Higher Education

Category
Host institution 		Employer
2022/01/03 - Current Invited Assistant (University Teacher) Universidade do Porto, Portugal
Universidade do Porto Faculdade de Engenharia, Portugal
2021/10/04 - 2022/02/28 Invited Assistant (Polytechnic Teacher) Instituto Politécnico do Porto, Portugal
Instituto Politécnico do Porto Instituto Superior de Engenharia do Porto, Portugal
2020/10 - 2021/02 Invited Assistant (Polytechnic Teacher) Instituto Politécnico do Porto, Portugal
Instituto Politécnico do Porto, Portugal
2019/09 - 2020/03 Invited Assistant (Polytechnic Teacher) Instituto Politécnico do Porto Instituto Superior de Engenharia do Porto, Portugal
Instituto Politécnico do Porto Instituto Superior de Engenharia do Porto, Portugal
Projects

Grant

Designation Funders
2017/11/01 - 2021/11/30 Analyzing and Developing Veracity Indicators for Building an Automatic Detector of False Online News
SFRH/BD/129708/2017
Universidade do Porto Faculdade de Ciências, Portugal
 Fundação para a Ciência e a Tecnologia
Concluded

Contract

Designation Funders
2024/01 - Current PTicola - Increasing Computationally Language Resources for Portuguese (FCT/CPCA-IAC/2023/01)
FCT/CPCA-IAC/2023/01
Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência, Portugal
Ongoing
2025 - 2026 CitiLink - Enhancing municipal transparency and citizen engagement through AI: from unstructured to structured data
2024.07509.IACDC
Universidade da Beira Interior, Portugal

Universidade do Porto Faculdade de Letras, Portugal

Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência, Portugal
Ongoing
2019/01 - 2019/12 INESC TEC ¿ INESC Tecnologia e Ciência
154759UID
UID/EEA/50014/2019
Instituto de Engenharia de Sistemas e Computadores, Portugal

Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência, Portugal
Fundação para a Ciência e a Tecnologia
Concluded
2015/04/27 - 2017/11/10 REMINDS - Sistema para Mineração e Deteção de Relevância
UTAP-ICDT/EEI-CTP/0022/2014
Instituto de Engenharia de Sistemas e Computadores, Portugal
 Fundação para a Ciência e a Tecnologia
Concluded
2013/05/01 - 2015/10/31 Programa de Intervenção em crianças e adolescentes para promoção da Aptidão Física, Atividade Física e Conhecimentos Alimentares
PTDC/DTP-DES/1328/2012
Research Fellow
Universidade do Porto Centro de Investigação em Actividade Física Saúde e Lazer, Portugal

Universidade do Porto Faculdade de Desporto, Portugal
Fundação para a Ciência e a Tecnologia
Concluded
Outputs

Publications

Book chapter
  1. Luís Filipe Cunha; Nuno Guimarães; Alexandra Mendes; Ricardo Campos; Alípio Jorge. "MedLink: Retrieval and Ranking of Case Reports to Assist Clinical Decision Making". 2025.
    10.1007/978-3-031-88720-8_13
  2. Rúben Almeida; Hugo Sousa; Luís F. Cunha; Nuno Guimarães; Ricardo Campos; Alípio Jorge. "Physio: An LLM-Based Physiotherapy Advisor". 2024.
    10.1007/978-3-031-56069-9_16
  3. Nuno Guimarães; Kimmo Vehkalahti; Pedro Campos; Joachim Engel. "Exploring Climate Change Data with R". 2022.
    10.1007/978-3-031-20748-8_11
Conference paper
  1. Piskorski, Jakub; Stefanovitch, Nicolas; Alam, Firoj; Campos, Ricardo; Dimitrov, Dimitar; Jorge, Alípio; Pollak, Senja; et al. "Overview of the CLEF-2024 CheckThat! Lab Task 3 on Persuasion Techniques". Paper presented in CLEF-2024 CheckThat!, Grenoble, 2024.
    Published
  2. Guimarães, Nuno and Campos, Ricardo and Jorge, Al´ipio; Gamallo, Pablo and Claro, Daniela and Teixeira, António and Real, Livy and Garcia, Marcos a. "Perfil Público: Automatic Generation and Visualization of Author Profiles for Digital News Media". 2024.
  3. Sousa, Hugo; Guimarães, Nuno; Jorge, Alípio; Campos, Ricardo. "GPT Struct Me: Probing GPT Models on Narrative Entity Extraction". 2023.
    10.1109/wi-iat59888.2023.00063
  4. Guimaraes, N; Figueira, A; Torgo, L. "Profiling Accounts Political Bias on Twitter". 2021.
    10.23919/cisti52073.2021.9476652
  5. Guimaraes, N; Figueira, A; Torgo, L. "Analysis and Detection of Unreliable Users in Twitter: Two Case Studies". 2020.
    10.1007/978-3-030-49559-6_3
  6. Guimaraes, N; Figueira, A; Torgo, L. "Knowledge-based Reliability Metrics for Social Media Accounts". 2020.
    10.5220/0010140403390350
  7. Guimaraes, Nuno; Vehkalahti, Kimmo; Campos, Pedro. "Fake news and Big Data: An overview of solutions". Paper presented in 62nd ISI World Statistics Congress, Kuala Lumpur, 2019.
    Published
  8. Figueira, Álvaro; Guimarães, Nuno; Pinto, José. "A System to Automatically Predict Relevance in Social Media". 2019.
    Published • 10.1016/j.procs.2019.12.160
  9. Guimaraes, NRPDS; Figueira, APDBBR. "Building a Semi-Supervised Dataset to Train Journalistic Relevance Detection Models". 2018.
    10.1109/dasc-picom-datacom-cyberscitec.2017.204
  10. Guimaraes, N; Miranda, F; Figueira, A. "Human vs. Automatic Annotation Regarding the Task of Relevance Detection in Social Networks". 2018.
    10.1007/978-3-319-75928-9_85
  11. Guimarães, N; Figueira, A; Torgo, L. "Contributions to the Detection of Unreliable Twitter Accounts through Analysis of Content and Behaviour". 2018.
    10.5220/0006932800920101
  12. Figueira, A; Guimarães, N; Torgo, L. "Current State of the Art to Detect Fake News in Social Media: Global Trendings and Next Challenges". 2018.
    10.5220/0007188503320339
  13. Guimaraes, N; Torgo, L; Figueira, A. "Twitter as a Source for Time- and Domain-Dependent Sentiment Lexicons". 2018.
    10.1007/978-3-319-78196-9_1
  14. Guimarães, Nuno. "Detecting Journalistic Relevance on Social Media: A Two-case Study Using Automatic Surrogate Features". 2017.
    10.1145/3110025.3122120
  15. Cunha, D; Guimarães, N; Figueira, A. "An architecture for a continuous and exploratory analysis on social media". 2017.
  16. Guimaraes, N.; Torgo, L.; Figueira, A.. "Lexicon expansion system for domain and time oriented sentiment analysis". 2016.
    10.5220/0006081704630471
  17. Guimarães, Nuno. "AFINA-te - A Healthy Lifestyle Information Website, Online Food Diary and Exercise Log Directly Towards Children". 2015.
    10.5220/0005459403930398
  18. Ribeiro, José Carlos; Ramos, Helena; Ferro-Lebres, Vera; Aires, Luísa; Mota, Jorge; Guimarães, Nuno; Esteves, Raquel; Moreira, Pedro; Marçal, Gustavo. "Physical activity levels and nutritional knowledge¿s among children and adolescents". 2014.
Journal article
  1. Nuno Guimarães; Ricardo Campos; Alípio Jorge. "Pre-trained language models: What do they know?". WIREs Data Mining and Knowledge Discovery (2024): https://doi.org/10.1002/widm.1518.
    10.1002/widm.1518
  2. Nuno Guimarães; Álvaro Figueira; Luis Torgo. "Can Fake News Detection Models Maintain the Performance through Time? A Longitudinal Evaluation of Twitter Publications". Mathematics (2021): https://www.mdpi.com/2227-7390/9/22/2988.
    10.3390/math9222988
  3. Rodrigues, T.; Guimarães, N.; Monteiro, J.. "The landscape of schizophrenia on twitter". European Psychiatry 64 S1 (2021): S368-S368. http://dx.doi.org/10.1192/j.eurpsy.2021.985.
    Open access • Published • 10.1192/j.eurpsy.2021.985
  4. Guimarães, N; Figueira, A; Torgo, L. "Towards a pragmatic detection of unreliable accounts on social networks". Online Soc. Networks Media (2021):
    10.1016/j.osnem.2021.100152
  5. Guimaraes, N; Miranda, F; Figueira, A. "Identifying journalistically relevant social media texts using human and automatic methodologies". INTERNATIONAL JOURNAL OF GRID AND UTILITY COMPUTING (2020):
    10.1504/ijguc.2020.103971
  6. Figueira, ¿lvaro; Guimaraes, Nuno; Torgo, Luis. "A Brief Overview on the Strategies to Fight Back the Spread of False Information". Journal of Web Engineering 18 4 (2019): 319-352. http://dx.doi.org/10.13052/jwe1540-9589.18463.
    10.13052/jwe1540-9589.18463

Other

Other output
  1. An organized review of key factors for fake news detection. 2021. Guimarães, N; Figueira, A; Torgo, L.
Activities

Oral presentation

Presentation title Event name
Host (Event location)
2024/02/06 Natural Language Processing: A brief introduction Checkmarx Small Talk
Checkmarx (Braga, Portugal)
2022/09/29 Unreliable content detection in social media settings: technological solutions, citizen engagement and the promotion of digital literacy Thinking Citizen Science – Challenges and opportunities for the Social Sciences
Faculdade de Letras da Universidade do Porto (Porto, Portugal)
2021/06/29 Identification of Unreliable Accounts in Social Networks: Current approaches and real-world scenarios Text Analysis and Machine Learning Group (TAMALE) Talks
Ottawa University (Ottawa, Canada)
2021/06/23 Profiling Accounts Political Bias on Twitter 16th Iberian Conference on Information Systems and Technologies (CISTI)
(Chaves, Portugal)
2020/11/03 Knowledge-based reliability metrics for social media accounts 16th International Conference on Web Information Systems and Technologies
(Online)
2019/07/25 Unreliable content on Social Media: can we trust our feed? Data Science Presentations
Farfetch (Porto, Portugal)
2019/04/12 Unreliable content on Social Media: can we trust our feed? DNLP Group Talk
Dalhousie University (Halifax, Nova Scotia, Canada)
2018/09/18 Contributions to the detection of unreliable Twitter accounts through analysis of content and behaviour 10th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
(Sevilha, Spain)
2017/11/06 Building a Semi-Supervised Dataset to Train Journalistic Relevance Detection Models 3rd Intl Conf on Big Data Intelligence and Computing
(Orlando, FL, United States)
2016/11/09 Lexicon expansion system for domain and time oriented sentiment analysis 8th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge Management
(Porto, Portugal)
2015/05/23 AFINA-te - A Healthy Lifestyle Information Website, Online Food Diary and Exercise Log Directly Towards Children 7th International Conference on Computer Supported Education
(Lisboa, Portugal)

Supervision

Thesis Title
Role 		Degree Subject (Type)
Institution / Organization
2023/10/01 - 2027/06/30 Injecting Medical Ontology Data into Large Language Models for Clinical Records
Co-supervisor
 Doutoramento em Ciência de Computadores (PhD)
Universidade do Porto Faculdade de Ciências, Portugal
2024/09/01 - 2025/06/30 Data Filling Method for Sleep Reports and Medical Free Text
Co-supervisor
 Mestrado em Informática Médica (Master)
Universidade do Porto Faculdade de Medicina, Portugal
2023/09/01 - 2024/06/30 Narrative Extraction from Synthetically-Generated Clinical Texts in European Portuguese
Co-supervisor
 Mestrado em Engenharia e Ciência de Dados (Master)
Universidade do Porto Faculdade de Engenharia, Portugal
2022/10/01 - 2023/12/17 Imbalanced MultiClass Classification with Concept Drift
Supervisor
 Mestrado em Ciência de Dados (Master)
Universidade do Porto Faculdade de Ciências, Portugal

Course / Discipline taught

Academic session Degree Subject (Type) Institution / Organization
2021/05/01 - 2021/08/15 Excel Workshop For Literary and Cultural Studies (Outros) Centre for English Translation and Anglo-Portuguese Studies, Portugal

Interview (newspaper / magazine)

Activity description Newspaper / Forum
2020/06/07 A verdade que nós andamos a esconder sobre a covid Expresso
2020/03/28 Fake news no Twitter sobre vírus quintuplicam num mês Expresso

Journal scientific committee

Journal title (ISSN) Publisher
2023/01/01 - 2023/12/31 Engineering Applications of Artificial Intelligence (0952-1976) Elsevier
2022/01/01 - 2022/12/31 Machine learning (0885-6125) Springer
2022/01/01 - 2022/12/31 Language Resources and Evaluation (1574-020X) Springer

Mentoring / Tutoring

Topic Student name
2022/03/01 - 2022/06/30 A WebApp for Reliability Detection in Social Media Filipe David
2021/01/03 - 2021/04/30 Dashboard development for REMINDS system Márcia Teixeira
2019/01/03 - 2019/06/30 REMINDS-Adapt: An adaptive model to improve the current performance of the REMINDS system José Gabriel Moreira Pinto