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#1 - WorldCIST 2019: Carneiro, J., Alves, P., Marreiros, G., & Novais, P. (2019, April). A multi-agent system framework for dialogue games in the group decision-making context. In World Conference on Information Systems and Technologies (pp. 437-447). Springer, Cham.

#2 - DCAI 2019: Carneiro, J., Alves, P., Marreiros, G., & Novais, P. (2019, June). A Conceptual Group Decision Support System for Current Times: Dispersed Group Decision-Making. In International Symposium on Distributed Computing and Artificial Intelligence (pp. 150-159). Springer, Cham.

#3 - HAIS 2019: Alves, P., Carneiro, J., Marreiros, G., & Novais, P. (2019, September). Modeling a Mobile Group Recommender System for Tourism with Intelligent Agents and Gamification. In International Conference on Hybrid Artificial Intelligence Systems (pp. 577-588). Springer, Cham.

#4 - Concurrency and Computation 2019: Conceição, L., Martinho, D., Andrade, R., Carneiro, J., Martins, C., Marreiros, G., & Novais, P. (2019). A web-based group decision support system for multicriteria problems. Concurrency and Computation: Practice and Experience, 33(2), e5298.

#5 - AAMAS 2020: Carneiro, J., Andrade, R., Alves, P., Conceição, L., Novais, P., & Marreiros, G. (2020, May). A consensus-based group decision support system using a multi-agent MicroServices approach. In Proceedings of the 19th International Conference on Autonomous Agents and MultiAgent Systems (pp. 2098-2100).

>>> AAMAS Demonstration Video: Click here to watch on Youtube

#6 - DCAI 2020: Conceição, L., Carneiro, J., Marreiros, G., & Novais, P. (2020, June). Applying Machine Learning Classifiers in Argumentation Context. In International Symposium on Distributed Computing and Artificial Intelligence (pp. 314-320). Springer, Cham.

#7 - UMAP 2020: Alves, P., Saraiva, P., Carneiro, J., Campos, P., Martins, H., Novais, P., & Marreiros, G. (2020, July). Modeling Tourists' Personality in Recommender Systems: How Does Personality Influence Preferences for Tourist Attractions?. In Proceedings of the 28th ACM conference on user modeling, adaptation and personalization (pp. 4-13).

#8 - Applied Sciences 2020: Carneiro, J., Martinho, D., Alves, P., Conceição, L., Marreiros, G., & Novais, P. (2020). A multiple criteria decision analysis framework for dispersed group decision-making contexts. Applied Sciences, 10(13), 4614.

#9 - Neurocomputing 2021: Carneiro, J., Alves, P., Marreiros, G., & Novais, P. (2021). Group decision support systems for current times: Overcoming the challenges of dispersed group decision-making. Neurocomputing, 423, 735-746.

#10 - PAAMS 2021: Carneiro, J., Meira, J., Novais, P., & Marreiros, G. (2021, October). Using Machine Learning to Predict the Users Ratings on TripAdvisor Based on Their Reviews. In Practical Applications of Agents and Multi-Agent Systems (pp. 127-138). Springer, Cham.

#11 - Electronics 2022: Meira, J., Carneiro, J., Bolón-Canedo, V., Alonso-Betanzos, A., Novais, P., & Marreiros, G. (2022). Anomaly Detection on Natural Language Processing to Improve Predictions on Tourist Preferences. Electronics, 11(5), 779.

#12 - PAAMS 2022: Alves, P., Gomes, D., Rodrigues, C., Carneiro, J., Novais, P., & Marreiros, G. (2022, July). Grouplanner: A Group Recommender System for Tourism with Multi-agent MicroServices. In International Conference on Practical Applications of Agents and Multi-Agent Systems (pp. 454-460). Cham: Springer International Publishing.

>>> PAAMS Demonstration Video: Click here to watch on Youtube

#13 - UMUAI 2023: Alves, P., Martins, H., Saraiva, P., Carneiro, J., Novais, P., & Marreiros, G. (2023). Group recommender systems for tourism: how does personality predict preferences for attractions, travel motivations, preferences and concerns?. User Modeling and User-Adapted Interaction, 1-70. (Appendices in Tab below)

#14 - RECSYS 2023: Alves, P., Martins, A., Novais, P., & Marreiros, G. (2023, September). Improving Group Recommendations using Personality, Dynamic Clustering and Multi-Agent MicroServices. In Proceedings of the 17th ACM Conference on Recommender Systems (pp. 1165-1168). (RecSys '23). Association for Computing Machinery, New York, NY, USA. https://doi.org/10.1145/3604915.3610653

>>> RecSys'23 Demonstration Video: Click here to watch on Youtube

#15 - Expert Systems With Applications 2024: Alves, P., Martins, A., Negrão, F., Novais, P., Almeida, A., & Marreiros, G. (2024). Are Heterogeinity and Conflicting Preferences No Longer a Problem? Personality-Based Dynamic Clustering for Group Recommender Systems. Expert Systems with Applications, Volume 255, Part D, 2024, 124812. ISSN 0957-4174, https://doi.org/10.1016/j.eswa.2024.124812

#16 - Under Review (2025): Alves, P., Trindade, J., Monteiro, G., Campos, P., Saraiva, P., Marreiros, G., & Novais, P. (2025). "You Want to Play a Game?" Detecting Two Personality Traits with Short-Duration Mobile Games.

"You Want to Play a Game?" Detecting Two Personality Traits with Short-Duration Mobile Games

Appendix A - Used questionnaire forms (Portuguese version)

IPIP-NEO-120 Personality Questionnaire

Pre-Questionnaire

Time Travel Game Post-Questionnaire

Which Way Game Post-Questionnaire

Appendix B - Questionnaires Responses

Full Dataset

Pre-Questionnaire responses

TT Post-Questionnaire responses

WW Post-Questionnaire responses

Appendix C

Participants' Personality Statistics

Appendix D

Pearson Correlations and Independent Samples T-Tests

Appendix E

Simulations Invitation Poster

Personality Minigames (Installable APK for Android Devices)

Time Travel Minigame

Which Way Minigame

ANDROID APPLICATION: Click here to install the app

PROTOTYPE demonstration VIDEO - Part 1: Click here to watch on Youtube

PROTOTYPE demonstration VIDEO - Part 2: Click here to watch on Youtube

USER MANUAL: Click here to view the user manual

PhD. thesis:

#1 "Negotiation in Group Decision Support Systems - an Approach based in Argumentation and Satisfaction", by João Carneiro. Discussed on 2018-03-23, with a final classification of "Very Good", receiving and honorable mention from Associação Portuguesa para a Inteligência Artificial (APPIA), on 2019-09-05.

#2 "Argumentation Dialogues in Web-based GDSS: An approach using Machine Learning Techniques", by Luís Conceição. Discussed on 2023-04-14, with a final classification of "Very Good".

#3 "Group Recommender Systems for Tourism: Overcoming the Cold-Start Problem and Conflicting Preferences by using Artificial Intelligence and Serious Games" (December, 2024), by Patrícia Alves. Under Review.


MSc. dissertations:

#1 "Deteção de Emoções em argumentos trocados no contexto de tomada de decisão em grupo", by João Moreira. Discussed on 2020-11-12. Final grade of 16 values

#2 "Decision Support System for facility location problems in fleet management", by João Martins. Discussed on 2020-11-13. Final grade of 19 values.

#3 "Sistema de Recomendação de Recursos Humanos e Gestão de informação em Projetos de I&D", by Tiago Cardoso. Discussed on 2020-11-20. Final grade of 17 values.

#4 "Recomendação de Pontos de Interesse para Grupos - Uma Abordagem baseada em Sistemas Multi-Agente e no Feedback dos Turistas" by André Martins. Discussed on 2023-07-27. Final grade of 19 values.

#5 "Using Gamification to Predict the Users' Personality in Recommender Systems" by João Trindade. Discussed on 2023-11-17. Final grade of 18 values.

#6 "Recommending based on the Tourist’s Context using Intelligent Agents in a Group Recommender System for Tourism" by Francisco Negrão. Discussed on 2023-11-13. Final grade of 17 values.

#7 "Predicting Tourist Preferences and Concerns based on the Tourists’ Personality and Demographic Data using Machine Learning Techniques" by Maria Pereira. Not Delivered.

#8 "Development of an Ontology of Tourist Attractions for Recommending Points of Interest in a Group Recommender System for Tourism" by David Silva. Discussed on 2023-11-17.

#9 "A Virtual Pet to Accompany and Motivate the Users in a Group Recommender System for Tourism" by Edgar Cordeiro. Discussed on 2023-11-09.

#10 "Utilização de jogos sérios para prever o traço de personalidade moralidade dos utilizadores em sistemas de recomendação" by Raúl Coelho. June, 2024. Final grade of 17 values.

#11 "Using Serious Games to Predict the Trust Personality Trait in Recommender Systems" by João Pereira. July, 2024.

#12 "Uso de Jogos Sérios para Prever o Traço de Personalidade Cooperação em Sistemas de Recomendação" by José Dias. September, 2024. Final grade of 19 values.

#13 "Uso de Jogos Sérios para Prever o Traço de Personalidade Ansiedade em Sistemas de Recomendação" by Luís Teixeira. September, 2024.

#14 "Using Serious Games to Predict the Orderliness Personality Trait in Recommender Systems" by Tomás Martins. September, 2024. Final grade of 17 values.

#15 "Apriori Algorithm Implementation in an Agent based Group Recommendation System" by Fausto Alves. September, 2024. Final grade of 19 values.


Internships under the Grouplanner project or funding:

#1 "Desenvolvimento de um Sistema Multi-Agente para a Tomada de Decisão Colaborativa", by Daniel Dias. Discussed on 2019-02-12. Final grade of 17 values.

#2 "Desenvolvimento de uma Aplicação móvel para um Sistema de Apoio à Decisão em Grupo", by João Santos. Discussed on 2019-09-24.

#3 "Desenvolvimento de um Sistema de Apoio à Decisão em Grupo baseado na Web", by Célio Serqueira. Discussed on 2019-10-03. Final grade of 18 values.

#4 "Desenvolvimento de um Sistema de Recomendação para Grupos de Turismo" by Álvaro Gomes. Discussed on 2021-09-28.

#5 "Desenvolvimento de um Sistema de Recomendação para Grupos de Turismo (aplicação móvel)" by Catarina Rodrigues. Discussed on 2021-10-06. Final grade of 17 values.

#6 "Desenvolvimento de um Sistema Multi-Agente usando Microserviços num Sistema de Recomendação para Grupos de Turismo" by Domingos Gomes. Discussed on 2022-10-12. Final grade of 19 values.

#7 "Using Minigames and Artificial Intelligence Techniques to Implicitly Acquire the Users' Personality in a Group Recommender System" by Gonçalo Monteiro. Discussed on 2023-09-28. Final grade of 18 values.

#8 "Integrating Pet Notification Systems into Tour Group Recommendation Platform" by Enmiao Ye. June, 2024

#9 "Gamificação de um Sistema de Recomendação para Grupos de Turismo (aplicação móvel)" by Filipe Magalhães. July, 2024.

#10 "Como motivar utilizadores num sistema de recomendação para grupos de turismo?" by Anna Vasylyshyna. July, 2024. Final grade of 17 values.

#11 "Desenvolvimento de um Animal Virtual e Elementos de Gamificação para Integração em Aplicações Móveis" by Vicente Teixeira. September, 2024. Final grade of 18 values.

#12 "Estudo do Impacto de um Animal Virtual na Experiência do Utilizador" by Diogo Magalhães. September, 2024.

#13 "Virtual Pet e Gamificação: Uma Nova Abordagem para Aplicações de Turismo" by Cláudia Gomes. September, 2024.

#14 "Motivação dos Utilizadores de um Sistema de Recomendação para Grupos de Turismo usando Gamificação" by Nuno Alves. Not Delivered.

#15 "Utilização de Contexto e de um Animal Virtual para Acompanhar Utilizadores usando Notificações com Recomendações Turísticas" by Guilherme Melo. September, 2024.

#16 "Criação de Jogos para Dispositivos Móveis com Foco no Aumento da Empatia dos Utilizadores" by Joana Neto. September, 2024. Final grade of 19 values.