The International Conference of the Catalan Association for Artificial Intelligence (CCIA) is an annual event that serves as a meeting point for researchers in Artificial Intelligence based in the area of the Catalan speaking territories (south France, Catalonia, Valencia, Balearic Islands and Alghero in Italy) and from around the world.
This book constitutes the proceedings of the 23rd edition of the CCIA, held in Lleida, in October 2021. The conference was held virtually due to the COVID-19 pandemic. Previous editions of the CCIA have been in Tarragona (1998), Girona (1999), Vilanova i la Geltrú (2000), Barcelona (2001, 2004, 2014, 2016), Castelló de la Plana (2002), Mallorca (2003), L’Alguer (Italy) (2005), Perpinyà (France) (2006), Andorra (2007), Sant Martí d’Empúries (2008), Cardona (2009), L’Espluga de Francolí (2010), Lleida (2011), Alacant (2012), Vic (2013), València (2015), Deltebre (2017), Roses (2018) and Colònia de Sant Jordi (2019). There was no CCIA in 2020 because of the severe restrictions caused by the COVID-19 pandemic.
The 42 long papers and 9 short papers presented in this volume were carefully reviewed and selected from 59 submissions. The reviewing process was made possible thanks to the 93 artificial intelligence experts who make up the program committee, plus some additional referees. We would especially like to thank them for their efforts in this task, as well as thanking the authors of the 59 submissions for their work.
The accepted papers deal with all aspects of artificial intelligence including: Combinatorial Problem Solving and Logics for Artificial Intelligence, Sentiment Analysis and Text Analysis, Data Science and Decision Support Systems, Machine Learning, Computer Vision, and Explainability and Argumentation. This book of proceedings also includes abstracts of the two invited talks, given by Prof. Patty Kostkova and Prof. João Marques-Silva.
We want to express our sincere gratitude to the Catalan Association for Artificial Intelligence (ACIA), the Research Group in Energy and Artificial Intelligence (GREiA), the Universitat de Lleida (UdL), the Universitat de Girona (UdG) and the Universitat Rovira i Virgili (URV) for their support.
Universitat de Lleida (Lleida), October 2021
Mateu Villaret, Universitat de Girona
Aïda Valls, Universitat Rovira i Virgili
Teresa Alsinet, Universitat de Lleida
Cèsar Fernández, Universitat de Lleida