PhD Defense in Digital Media: ”Artificial Intelligence and Infodemic: a study on fact-checked Health Communication and synthetic media”

Candidate:
Haline Costa Maia

Date, Time and Place:
February 24th 2025, 10:30, Sala de Atos DEEC (I -105), Faculty of Engineering, University of Porto.

President of the Jury:
António Fernando Vasconcelos Cunha Castro Coelho, PhD, Associate Professor with Habilitation, Department of Informatics Engineering, Faculdade de Engenharia, Universidade do Porto.

Members:
Christopher Mathieu, PhD, Associate Professor, Department of Sociology, Faculty of Social Sciences, Lund University;
Stefania Milan, PhD, Professor of Critical Data Studies, Department of Media Studies, Faculty of Humanities, University of Amsterdam;
António Maria Salvado Coxito Granado, PhD, Associate Professor with Habilitation, Department of Communication Sciences, Faculdade de Ciências Sociais e Humanas, Universidade Nova de Lisboa;
Ioli Ribeiro Campos, PhD, Assistant Professor, Faculdade de Ciências Humanas, Universidade Católica Portuguesa;
Helena Laura Dias de Lima, PhD, Associate Professor, Department of Communication and Information Sciences, Faculdade de Letras, Universidade do Porto (Supervisor);
Alexandre Miguel Barbosa Valle de Carvalho, PhD, Assistant Professor, Department of Informatics Engineering, Faculdade de Engenharia, Universidade do Porto.

The thesis was co supervised by Prof. Sérgio Sobral Nunes, Associate Professor at the Department of Informatics Engineering, Faculdade de Engenharia, Universidade do Porto.

Abstract:

The proliferation of health misinformation, especially during critical times such as pandemics, has underscored the need for effective mechanisms to verify and disseminate accurate health news. This research, guided by Value Sensitive Design (VSD), investigates the integration of Artificial Intelligence (AI) in health fact-checking, aiming to enhance the speed and reliability of information dissemination while ensuring ethical compliance. The study addresses these key research questions: How can AI facilitate the rapid dissemination of authenticated health information? What benefits does AI integration bring to health fact-checking processes? How can AI promote ethically responsible practices in the dissemination of counter-information? Through systematic reviews, case studies, and empirical research, including co-design workshops and surveys, the research evaluates existing AI applications. It develops guidelines for incorporating AI in journalism and public health information systems. This dissertation follows a structured approach centered around the three distinct phases of VSD. During the Conceptual Investigations phase, systematic reviews and meta-analyses were conducted on publications from 2020 to 2022, using the PRISMA process to analyze 57 studies. During the Technical Investigations phase, case studies and semi-structured interviews were conducted with stakeholders. In the Empirical Investigations, technological probes using AI for the dissemination phase of health fact-checking were tested through co-design workshops, focus groups, and surveys. The data collected in the Technical and Empirical phases were analyzed using thematic and exploratory methods. Findings indicate that while AI significantly enhances the efficiency of fact-checking processes, challenges related to equality, governance, and stakeholder trust remain prevalent. The study also explores the socio-technical dynamics of AI applications in fact-checking, emphasizing the importance of value-driven design to mitigate ethical risks and promote inclusivity. The implications of this research are far-reaching, offering guidelines for developing AI-driven tools that are not only technologically effective but also culturally sensitive and ethically sound. By fostering a better understanding of AI’s role in managing health misinformation, this work contributes to the broader discussion on technology governance and the ethical dimensions of digital media in public health contexts.

Keywords:  AI Ethics; Infodemic; Generative Media; Fact-Checking; Health Misinformation; Media Literacy; Journalism Innovation.

PhD Defense in Digital Media: ”Interfacing peer-produced knowledge: a framework for shadow libraries based on pervasive games”

Candidate:
Pedro Miguel Sá Couto Condeço Ribeiro

Date, Time and Place:
February 19th 2025, at 9:30, Sala de Atos (L202A), Department of Industrial Engineering and Management of the Faculty of Engineering of University of Porto

President of the Jury:
António Fernando Vasconcelos Cunha Castro Coelho, PhD, Associate Professor with Habilitation, Department of Informatics Engineering, Faculdade de Engenharia, Universidade do Porto.

Members:
Rodrigo Hernández Ramírez, PhD, Senior Lecturer in Design da Sydney School of Architecture, Design and Planning da The University of Sydney, Austrália;
Luísa Maria Lopes Ribas, PhD, Assistant Professor, Design and Communication Department, Faculdade de Belas Artes, Universidade de Lisboa;
Teresa Isabel Lopes Romão, PhD, Associate Professor, Department of Informatics, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa;
Catarina Franco Lélis da Cruz, PhD, Assistant Professor, Department of Communication and Art, Universidade de Aveiro;
José Miguel Santos Araújo Carvalhais Fonseca, PhD, Full Professor, Department of Design, Faculdade de Belas Artes, Universidade do Porto (Supervisor);
Rui Pedro Amaral Rodrigues, PhD, Associate Professor, Departament of Informatics Engineering, Faculdade de Engenharia, Universidade do Porto.

The thesis was co supervised by Pedro Cardoso, PhD, Assistant Professor, Department of Design, Faculdade de Belas Artes, Universidade do Porto.

Abstract:
Shadow libraries are media repositories whose primary goal is to enable access to resources that were previously restricted or inaccessible through other means. These informal publishing streams have the additional capacity to interface knowledge that does not fit or does not aim to fit within formal distribution models.
As a case study, we researched Portuguese-student shadow libraries (PSSLs) as spaces significant beyond their distributive capacity. Through physical, digital and hybrid interfaces, PSSLs challenge contemporary access to published research, enabling community members to produce and distribute informal knowledge and actively questioning the stability of peers’ roles, dependencies, and interdependencies.
This research started by investigating PSSLs community members’ current needs and requirements. Subsequently, we analysed how prominent shadow libraries align with these needs and how available platforms have the necessary affordances to respond to them. Informed by present constraints, we established a set of software requirements to support the creation and transformation of multiple shadow libraries, enable the collection of plural voices and interventions, and ensure these spaces accommodate a diverse range of resources.
In the second moment of our research, we studied shadow libraries from a new lens. We explored potential library discourses using mechanics from pervasive games as a tool with particular traits and potential. In the context of this research, these are particularly relevant due to their capacity to extend experiences beyond fixed timeframes, leading to users’ sustained and continuous involvement; extend the relationship between users and their environment, exploring the boundaries between physical and digital spaces; extend the possible interfaces for interaction introducing new hypotheses for interaction and user engagement; extend the dynamics between users and their community by integrating external variables and reshaping social interactions; extend users’ engagement at a more personal and meaningful level.
Through a practice-based research methodology, we led community members to reconsider shadow library’s distribution and production dynamics, as well as community interactions. Contributions from these explorations establish a holistic set of design strategies that challenge dominant shadow library practices and highlight the importance of protecting projects’ motivations, community requirements, dependencies, and informal principles. Collectively, the strategies and dependencies identified establish a framework for expanding shadow libraries in response to communities’ evolving needs, ultimately shaping access, distribution, production, and publication of knowledge, and peer synergies.

Keywords:
Shadow Libraries; Peer-produced knowledge; Design; Pervasive Games; Game mechanics; Publishing.

DEI Talks | “AI and the Worlds of Work“ by Prof. Christopher Mathieu (Lund University)

The talk “AI and the Worlds of Work “ will be presented February the 25th, at 11:00, in room I-105, moderated by António Coelho (DEI).

Abstract:

“The effects of AI on work is a central point of discussion and negotiation in many fields. Machines and mechanical tools have replaced some but not all physical manual labour. The assumption is that AI will bring similar changes, eradicating some jobs, transforming many and having little impact on others. At the moment we know very little about which jobs AI will replace, transform, increase or have little real impact on, but we know that the scope of work and jobs is wide, and that changes do not occur automatically, they are usually negotiated, and negotiations have already begun to take place in a number of sectors. While industrial machines largely replaced low-skill, low-paid physically demanding manual work, the assumption is that AI will increasingly have an impact on high-skill, high-qualification, and high-consequence cognitive and even “creative” work. As AI poses challenges to workers of higher standing and better organized, the deployment and use of AI is subject to negotiation and contestation, both at workplaces and in central negotiations between employers and employee representatives. Worlds of work differ from technical and social perspectives, and as we already see, AI is confronted differently dependent upon what types of employees are being impacted and in which jurisdiction. This lecture examines the various reactions to the “threats” and “possibilities” of AI among different types of workers from telecoms to entertainment in Europe and North America, arguing that institutional factors play a significant role in these negotiations and subsequent use and deployment of AI.”

About the Speaker:

Chris Mathieu is Reader in the Sociology of Work and Organisations at the Department of Sociology, Lund University, and previously (2002-2014) Associate Professor at the Department of Organisation, Copenhagen Business School. From 2015-2018 he was coordinator of the Horizon 2020 project QuInnE (quinne.eu) – Quality of Jobs and Innovation Generated Employment Outcomes. His primary research areas include film production as well as medical education and practice. Book publications include: Careers in Creative Industries (Routledge, 2012); Accomplishing Cultural Policy in Europe (Routledge 2022); and The Oxford Handbook of Job Quality (OUP, 2022). A recent article on AI as a focus area of labour negotiations is: Ilsøe, A., Larsen, T. P., Mathieu, C., & Rolandsson, B. (2024). Negotiating about Algorithms: Social Partner Responses to AI in Denmark and Sweden. ILR Review, 77(5), 856-868. https://doi.org/10.1177/00197939241278956f

DEI Talks | “Towards Industry and Operator 5.0: Challenges and Opportunities“ by Dr. Rodolfo Haber (CSIC/UPM)

The talk “Towards Industry and Operator 5.0: Challenges and Opportunities“ will be presented January 24th, at 15:00, room B011, moderated by Gil Gonçalves (DEI).

Abstract:

“Built on the pillars of human-centricity and resilience, Industry 5.0 is focused on fostering the industry towards a new paradigm that not only remains within economic boundaries but also actively contributes to well-being and sustainability. The adoption of Industry 5.0 principles is just at the beginning phase in Europe, where the paradigm is transitioning from awareness and methods development to implementation including the Operator 5.0. In this conference, the industrial human needs, human factors and potential future applications are analysed, exploring the links with cyber-physical human systems and enabling technologies. The initiative of Community of Practice of Industry 5.0 (CoP Industry 5.0, European Commission) is also presented. Transitioning from Operator 4.0 to Operator 5.0 involves advancing beyond the integration of digital technologies into fostering a more human-centric, intelligent, and resilient workforce in smart manufacturing environments. Key related issues with Operator 5.0 will be also discussed.”

About the Speaker:

Rodolfo Haber received the Ph.D. degree in Industrial Engineering from the Universidad Politécnica de Madrid, Spain, in 1999. Researcher of the Spanish Council for Scientific Research (CSIC) since 2006. From 2020-24, he has been Director of the Center for Automation and Robotics of the Spanish Council for Scientific Research (CSIC) and Polytechnic University of Madrid (UPM). He has authored 3 books, 14 patents, 1 trade secret, 21 book chapters, and dozen of articles in indexed journals and conference papers (h-index:42). He has been co-founder of the starts-up Kinequo S.L. (2015), Xymbot Digital Solutions S.L. (2020) and Invofox SL (2022). Since 2002, he has belonged to the IFAC’s TC3.1/5.1 Computers for Control/Manufacturing Plant Control of IFAC, ASME TC Model Identification and Intelligent Systems and IEEE IES TC on Industrial Cyber-Physical Systems. He is member of the Editorial Board of several journals, editing nowadays a Collection Topic “Smart manufacturing systems and industry 4.0

Technologies” (Scientific Reports, Nature Portfolio). He represents CSIC in “Data, AI and Robotics (DAIRO)” EU Association and he is member of Industry 5.0 Community of Practice Initiative (European Commission). His main research activities are focused on cyber-physical systems, Internet-of-Everything, intelligent systems, modelling, control and supervisory systems, artificial cognitive systems and Industry 5.0.

LinkedIn: https://es.linkedin.com/in/rodolfo-haber-43b82b14

ResearchGate: https://www.researchgate.net/profile/Rodolfo-Elias-Haber-Guerra

GoogleScholar: https://scholar.google.es/citations?user=07IZQjQAAAAJ&hl=es

DEI Talks | “Key Challenges in Cyber Security and Cyber Resilience” by José Alegria

The talk “Key Challenges in Cyber Security and Cyber Resilience” will be presented November 27th, at 14:00, room B021, moderated by Prof. António Pimenta Monteiro (DEI).

 Abstract:

 Cybersecurity and cyber resilience must be viewed holistically under an active doctrine covering five dimensions: A) Governance, B) Prevention, C) Protection, D) Early Detection and Fast Counterresponse, and, finally, F) Quick Recovery. Prevention and Protection are designed as “inhibitor” dimensions to minimize the probability of a cyber-attack materializing and succeeding.

In this talk, we will discuss this active cyber governance doctrine and identify key, challenging, new research areas.

 About the Speaker:

 José Alegria (PhD) RedShift Board Advisor and CIIWA Ambassador and Strategy Advisor. Both focused on cybersecurity.

Former Chief Security Officer and CISO at Altice Portugal. Former Worldwide Coordinator of the CyberWatch Program at the Altice Group. Former Member of European Cybercrime Center (EC3) Advisory Group on Communication Providers at EUROPOL.

Previously, CTO at ONI Telecom, CEO of BanifServ, General Manager of IT Services at Banking Groups BBI/BFE and BFB/BPI, member of the Executive Board at IBM Portugal, and head of Data General’s European EuroACE competence center.

Senior Lecturer at New University of Lisbon, Computer Science Department. Fulbright-Hays and Gulbenkian Scholar at The Ohio State University, Columbus, OH, USA.

Over 25 years of experience in applying advanced software technology to cybersecurity (complex event processing, event correlation, new languages, multi-paradigm frameworks, actor systems, data science, and machine learning applied to cybersecurity).

Co-advised over 66 MSc Thesis in Cybersecurity-related fields.”

DEI Talks | “Evaluating Diversification in Group Recommendation of Points of Interest” by Prof. Frederico Durão

The talk “Evaluating Diversification in Group Recommendation of Points of Interest” will be presented November 21st, at 15:00, room I-105, moderated by Prof. Rosaldo Rossetti (DEI).

 Abstract:

With the massive availability and use of the Internet, the search for Points of Interest (POI) is becoming an arduous task. POI Recommendation Systems have, therefore, emerged to help users search for and discover relevant POIs based on their preferences and behaviors. These systems combine different information sources and present numerous research challenges and questions. POI recommender systems traditionally focused on providing recommendations to individual users based on their preferences and behaviors. However, there is an increasing need to recommend POIs to groups of users rather than just individuals. People often visit POIs together in groups rather than alone. Thus, some studies indicate that the further users travel, the less relevant the POIs are to them. In addition, the recommendations belong to the same category, without diversity. This work proposes a POI Recommendation System for a group using a diversity algorithm based on members’ preferences and their locations. The evaluation of the proposal involved both online and offline experiments. Accuracy metrics were used in the evaluation, and it was observed that the level at which the results were analyzed was relevant. For the top 3, recommendations without diversity performed better, but diversification positively impacted the results at the top 5 and 10 levels.

 About the Speaker:

Frederico Araújo Durão is an Associate Professor at the Institute of Computing of the Federal University of Bahia. Frederico Durão did his post-doctoral research at Insight Centre for Data Analysis, University College Cork, Ireland in 2016/2017. In 2012, he obtained his PhD in Computer Science from the University of Aalborg, Denmark. Frederico Durão has reviewed and published several articles in conferences and journals relevant to the areas of Information Systems, Recommender Systems, and Semantic Web. Currently is a senior researcher and the project leader of the RecSys Research Group in Brazil.

DEI Talks | “Insert Coin” – A long-term study of education gamification by Prof. Daniel Gonçalves

The talk ““Insert Coin” – A long-term study of education gamification” will be presented December 9th, at 3pm, room I-105, moderated by Prof. Daniel Mendes (DEI).

Abstract:

“Education nowadays still follows, for the most part, the traditional lecture-based teaching paradigm that has been the leading approach for well over a century. This flies in the face of current personal learning dynamics, in a world where information is increasingly at our fingertips. This mismatch between student expectations and classroom practice directly impacts their interest, engagement, and will to learn. Gamification has shown promise, in recent years, as a way to bring a game-like experience to several contexts, including education. Using it, learning becomes a game, with expected increases in motivation and, consequently, learning outcomes. Over a period of thirteen years we have gamified a MSc-level course, Multimedia Content Production. We tried to appeal to student’s nature as gamers and provide a flexible experience whereby they can exercise their autonomy. We will present how the game experience has evolved over that period of time and the lessons learned based on student expectations and reactions in this context. What is more, it soon became clear to us that students do not all react to the gamified experience in the same way. We can profile them using a four-cluster taxonomy, that has shown resilience throughout the years and that serves as the basis for an adaptive learning experience that will, finally, allow us to depart from the monolithic one-size-fits-all approach to education.”

About the Speaker:

Daniel Gonçalves is full professor at the Computer Science Department of Instituto Superior Técnico – University of Lisbon, and a researcher in the Graphics and Interaction area at INESC-ID, where he specializes in Human-Computer Interaction (HCI), in particular in Education Gamification and Information Visualization. With a prolific academic output, he has authored over 200 scientific articles and a textbook on HCI, guided 11 doctoral and 100+ master’s students, and played a prominent role in various research projects in the area.

DEI Talks | “Design and AI Innovation” by Prof. Jodi Forlizzi

The lecture “Design and AI Innovation” will be presented on October 24, at 11:00, in INESC TEC’s Auditorium B.

Abstract:

“As early as 2011, Marc Andreesen identified that the world was facing a broad technological and economic shift in which software companies were poised to command much of the world’s economy. Now, 13 years later, the emergence of computing, data, and AI have impacted all industries. In this talk, I will examine how AI is changing my discipline, design, but also how design is changing AI. I will reflect on these ideas along with the emergence and rapid growth of generative AI and Large Language Models. I will identify new spaces for product innovation that utilize the most fruitful elements of the practice of design and AI as a design material.”

 Bio:

Jodi Forlizzi is the Herbert A. Simon Professor of Computer Science and Human-Computer Interaction in the School of Computer Science at Carnegie Mellon University. She is also the Associate Dean of Diversity, Equity, and Inclusion in the School of Computer Science. Jodi has advocated for design research in all forms, mentoring peers, colleagues, and students in its structure and execution, and today it is an important part of the HCI community. Jodi studies the ethical impacts of human interaction with AI systems in front-line service industries including healthcare and hospitality. She also develops methods and tools to ensure that product developers can mitigate ethical harms and bias during product development. Jodi is an ACM SIGCHI Fellow and recently received its Lifetime Research Award. She recently testified to the US Senate in one an AI Innovation Briefing and is a central advisor to the AFL-CIO Tech Institute regarding technology research.

Creativity Talk | “The Role of Design in Purposeful and Pragmatic AI” by Prof. Jodi Forlizzi

What we design is changing; therefore, how we design is also changing. In this talk, I will set the context for the role of design in creating purposeful and pragmatic technology, both historically and today. I will then highlight some of our research showing the impact of design in creating, developing, and deploying AI and autonomous systems, with the goal of creating better social systems, better economic relations, and a better world in which to live.

The 15th Creativity Talk, ‘The Role of Design in Purposeful and Pragmatic AI‘, will be held on October 23 at 17:30 in room B032, moderated by António Coelho (DEI).

The session will also be streamed online via the YouTube channel of this lecture series.

Jodi Forlizzi is the Herbert A. Simon Professor of Computer Science and Human-Computer Interaction in the School of Computer Science at Carnegie Mellon University. She is also the Associate Dean of Diversity, Equity, and Inclusion in the School of Computer Science. Jodi has advocated for design research in all forms, mentoring peers, colleagues, and students in its structure and execution, and today it is an important part of the HCI community. Jodi studies the ethical impacts of human interaction with AI systems in front-line service industries including healthcare and hospitality. She also develops methods and tools to ensure that product developers can mitigate ethical harms and bias during product development. Jodi is an ACM SIGCHI Fellow and recently received its Lifetime Research Award. She recently testified to the US Senate in one an AI Innovation Briefing and is a central advisor to the AFL-CIO Tech Institute regarding technology research.

Free access but mandatory registration here.

DEI Talks | “Accelerating Implicit Mechanics” by Robert F. Lucas

“Historically, the run time of implicit mechanics has been dominated by the time required to solve a large sparse linear system. The default solver is a multifrontal sparse matrix factorization, which will reliably solve ill conditioned, indefinite problems. The multifrontal method turns a sparse matrix factorization into a directed acyclic graph of smaller, dense “frontal” matrix factorizations, and these can be accelerated using Graphics Processing Units. As the number of processors used grows into the thousands, reordering the sparse matrix to reduce the storage and operations required to factor it, is the emerging computational bottleneck. Reordering is NP-complete, and in computational mechanics the preferred heuristic is nested dissection, i.e., recursive graph partitioning. Finding a balanced min cut is NP-hard, and classical codes such as ParMetis have limited parallel scaling. This talk will also discuss on-going work to explore a new generation of specialized devices for solving optimization problems. These include the D-Wave adiabatic quantum annealer, so called Silicon annealers produced by Fujitsu and Toshiba, the LightSolver Laser Processing Unit. The Digital Annealer is a dedicated chip that uses non-von Neumann architecture to minimize data movement in solving combinatorial optimization problems.”

“Accelerating Implicit Mechanics” will be presented October 10, at 15:00, room Vasco Sá (L119) – Sala de Atos do Departamento de Engenharia Mecânica.

“Dr. Robert F. Lucas received his BSc, MSc, and PhD degrees in Electrical Engineering from Stanford University in 1980, 1983, and 1988 respectively. He is currently an Ansys Fellow where he is responsible for the default multifrontal linear solver used in LS-DYNA and MAPDL. Previously, he was the Operational Director of the University of Southern California (USC) – Lockheed Martin Quantum Computing Center. Before joining USC, he was the Head of the High-Performance Computing Research Department in the National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory and before that the Deputy Director of DARPA’s Information Technology Office. From 1988 to 1998 he was a member of the research staff of the Institute for Defense Analyses’s Center for Computing Sciences. From 1979 to 1984 he was a member of the Technical Staff of the Hughes Aircraft Company.”

Note: This talk is preceded by another talk, geared towards Mechanical Engineering and focusing on the use of ANSYS/LS-DYNA for modeling and simulation, by the same speaker at 14:00, in the same room, entitled “An Industrial Grand Challenge”. You are all welcome.