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< Back Aina Errando PhD Researcher aina.errando@vub.be With a background in journalism, she has studied a master’s degree in Political Science: International and European Governance (VUB), an Advanced Master’s in European Integration (BSOG), and a Master’s in Digital and Data Journalism (Nebrija Univeristy). As a PhD researcher in the ALGEPI project (understanding ALGorithmic gatekeepers to promote EPIstemic welfare), she works analysing some of the most pressing challenges facing the media industry today. Her research focuses on algorithmic gatekeepers and media strategies, exploring why and how algorithms are designed to fit and influence media consumption. In an algorithmic media environment, it is crucial to understand which mechanisms help retain or regain trust in media as well as to assess how algorithmic gatekeepers can contribute to or hinder media diversity. Visit my research profile

< Back The platformization of Public Service Media. A comparative analysis of five BVOD services in Western and Northern Europe Iordache, C., & Raats, T. (2023). The platformization of Public Service Media. A comparative analysis of five BVOD services in Western and Northern Europe. International Journal of Media and Cultural Politics , 19 (1), 3-22. https://doi.org/10.1386/macp_00070_1 Recent developments in the media industries have signalled the need for public service media (PSM) organizations to reposition themselves in order to reach audiences, and also secure financial sustainability and programming rights. In repositioning themselves, PSM have increasingly embraced some of the core characteristics of platforms by developing a central video-on-demand (VOD) service as portal to PSM services, investing in exclusive content and using data to create richer user experiences and gain insights into audience practices. However, this ‘platformization’ process comes with both challenges and opportunities to reach the public service remit. This article conducts an analysis of the on-demand portals of PSM, to uncover how platformization is reshaping the PSM core remit and values, and how these are transposed in online services and offerings. The research employs a comparative case study analysis of five VOD services of PSM in Western and Northern Europe: Belgium-Flanders (VRT.NU), BelgiumWallonia (RTBF Auvio), Finland (Yle Areena), Ireland (RTÉ Player) and Norway (NRK TV). The results discuss three main categories: interfaces and features, strategies for catalogue and content curation, and tools for discoverability and prominence. Platforms, Public Service Media Previous Read the article Next

< Back Webinar: Streaming in Vlaanderen 1 Oct 2024 Ontdek alle trends en inzichten in ons webinar! Benieuwd naar hoe Vlamingen hun favoriete content streamen? Sluit op 31 oktober aan bij het 1e proeftuin webinar! We introduceren de eerste inzichten uit ons project 'Streaming Affordances voor kleine mediamarkten', ondersteund door VLAIO en de Vlaamse Minister van Media. Tijdens het webinar krijg je een diepgaand overzicht van: De voorkeuren en motivaties van Vlaamse streamers Hoe technologie, context en content hun kijkgedrag beïnvloeden De resultaten van interviews, dagboekonderzoeken en een grootschalige survey Mis deze kans niet om waardevolle inzichten op te doen over de snel veranderende wereld van streaming. Schrijf je vandaag nog in en ontdek hoe de Vlaming met media omgaat! Details: 📆 Datum: 31 oktober 2024 🕚 Tijd: 11u-12u 💻 Online Meld je aan voor deze webinar via onderstaande link: Registreren Previous Next

< Back Jeroen Peeters Senior Researcher Manager Jeroen.peeters@vub.be Jeroen holds a PhD in Political Communication (University of Antwerp, 2022). His doctoral research explored the critical role of issue selection in political social media communication, examining both what politicians choose to highlight and what content citizens prefer to see. This comprehensive approach provided valuable insights into the digital political sphere. After his PhD, Jeroen worked as a researcher for a major media company. Jeroen works as a Senior Researcher at the Vrije Universiteit Brussel (VUB) within the Media Economics and Policy unit at SMIT. His research interests focus on video streaming services and recommender systems in Flanders. He is the research manager for 2 projects. De Proeftuin tries to gain fundamental insights into user behaviour of streaming consumers. The project wants to strengthen the offer, positioning, visibility and discoverability of Flemish streaming platforms in order to improve the overall experience users have with these platforms. The Serendipity Engine project sets out to support societal stakeholders in designing recommender systems to foster serendipity in public contexts. Visit my research profile

< Back Looking back at IUI 2025 31 Mar 2025 Ulysse attended the conference and presented at the AXAI workshop Pristine beaches, a bright turquoise sea, impressive rock formations and pink flamingo’s… Cagliari has it all. Despite the undeniable beauty of Sardinia’s capital, the most memorable element of my stay was however related to Intelligent User Interfaces. You read that right: I was lucky enough to attend the yearly conference on Intelligent User Interfaces (IUI) - which turned out to be an exceptionally inspirational and instructive experience. It shouldn’t come as a surprise that my interest was sparked by the central theme - the conjunction between Artificial Intelligence (AI), and how User Interfaces (UI) can optimally accommodate for them. But the real experience went above and beyond my initial expectations. In this article, I break it down in 3 key elements. 1. The overarching theme: AI should benefit the user Believe it or not, but the word “user” was mentioned even more often than “LLM” (see paragraph 3; “There is no escaping LLMs”). Shouldn’t be too surprising for a conference focusing on user interfaces, right? Well, it struck me that this community really tries to model user preferences and -needs accurately, for which it draws a lot more often from cognitive and behavioral research than is common in computer science. As I’m also considering to conduct user experiments to evaluate the effects of explanations on the complex experience of the system, this focus meant that I learned a lot about suitable methodologies. During the course of the week, my belief in the importance of putting the user central has been fortified as well. Now more than ever, it is important to guard user agency and autonomy, and to prevent over-reliance on increasingly capable and connected AI systems. The current generative AI boom raises a lot of concerns among various affected stakeholders. Sometimes, it feels like these tools are at least partly exploitative in nature - a concern that was vividly expressed by professor Giulio Jacucci in his opening keynote at the HAI-GEN workshop. 2. The AXAI workshop: Explanations should be adaptive to be impactful Throughout the presentations in the AXAI (Adaptive eXplainable AI) workshop session, I learned that adaptivity can be geared towards multiple users and use cases, and is therefore often interpreted differently by various researchers and fields. Some focus on adapting explanations to the user at hand, in terms of content, or complexity. Others consider adaption to context. In any case, it seems that LLMs offer a great avenue to increase the level of adaptation in many cases, although this may spark concerns regarding trustworthiness. Related to that topic, I presented our paper ( link ), co-authored with Lien and supervised by Annelien. What set it apart was mainly its ridiculously long title: “Mitigating Misleadingness in LLM-Generated Natural Language Explanations for Recommender Systems: Ensuring Broad Truthfulness Through Factuality and Faithfulness”. Not exactly the title of Sabrina Carpenter’s next hit, but it certainly sparked some lively discussion. I opened my presentation with a straightforward example of gender bias in a job recommender: it generated the exact same “high-quality” explanation for two different users—a female designer recommended design jobs and a male designer steered toward management roles. This example served as a way to illustrate the benefit of incorporating uncertainty and interactive counterfactuals into explanations, to enable greater transparency and scrutability. I recognized a similar call for communicating uncertainty as a means to obtain transparency in Prof. Q. Vera Liao’s keynote on Thursday. I was also pleased to see Prof. Turchi present “Talking Back - human input and explanations to interactive AI systems“, an inspiring study on interactive counterfactuals using SHAP values as sliders. It sparked my interest in further exploring the integration of interactive explanations with SHAP in content-based recommender systems. My presentation then proceeded with stating the difference between explanations and justifications, and how LLMs enable the generation of plausible justifications at scale. This can pose a problem of unfounded trust in recommender systems, especially since earlier research has shown that the mere presence of explanations already enhances the trust and item acceptance. This underscores the importance of truthful explanations - which brought me to the core of my presentation: to assess “truthfulness”, we should agree on a definition and an operationalization. This is where I propose to frame truthfulness as “providing accurate information”, consisting of both factuality and faithfulness. Unfortunately, we often see that different research disciplines consider different aspects of truthfulness: while computer science works often focus on factuality, social science merely investigates faithfulness. Luckily, as Krzysztof Gajos mentioned in Wednesday’s morning panel, the field of IUI is well-positioned to bridge these different perspectives into truly useful interfaces. Slide from AXAI presentation: "Defining truthfulness" I proceeded with mentioning the 4 evaluation perspectives to assess explanation quality in recommender systems, as proposed by Ge et al., while also mentioning the 7 explanation goals as defined by Tintarev in 2007. I was curious if the audience would deem this evaluation method useful outside of recommender systems as well, and it indeed proved to be fertile ground for discussion. While most workshop participants agreed that the dimensions could be useful, the explanation goal of “persuasion” was contested, as this should be seen as a side-effect or external result, not something to optimize for. To end my presentation, I went over some possible mitigation strategies that focus on prompting, interface and model-based approaches (all are further discussed in the paper). Slide from AXAI presentation: "Mitigation strategies for LLM-generated misleading explanations" Besides the "Talking back" paper, the presentations most relevant to my area of interest in this session were "Toward a Human-Centered Metric for Evaluating Trust in Artificial Intelligence Systems" and "'Loss in Value': What it reveals about WHO an explanation serves well and WHEN". By the way, in the morning, I attended another great workshop: HAI-GEN, in which the shift to an intent-based paradigm was stressed multiple times. I was very happy to hear this, as I’m also convinced that we are effectively moving to a new way of interaction with our systems, were we move from command-based interaction towards a more natural way of communicating our goals to digital systems. As far as I’m aware, the term “intent-based interaction” was coined by Jakob Nielsen in a now-famous blog post . I find this very inspiring and consider it one of the main guiding threads for my research. There is no escaping LLMs As announced in the opening talk, I indeed noticed that LLMs were ubiquitous. From self-improving LLM-agents that learn to play Minecraft, to LLMs that optimize meeting schedules: a lot of authors (including myself) reported on the promises and perils of incorporating language models to enhance interactivity, accessibility or automation. The popularity of LLMs should however not be mistaken for devotion. Many times I realized, as a scientific community, we have the privilege to be critical, and look beyond the hype - so that we can report on both the opportunities as well as the limitations of LLMs. That doesn’t mean that we shouldn’t be excited about the seemingly endless possibilities of this new technology of course. But as was rightfully highlighted by Prof. Burnett, we should consider it in a responsible way. By doing so, we can provide valuable insights that help to steer the development and implementation of AI-models beyond purely profit-driven goals. Conclusion: An inspiring conference at the heart of my research interests This post could have been much longer if I had included all my notes. I'll end it here for now, but in the coming weeks, I hope to frequently revisit these notes to reignite the inspiration I felt from attending the conference, listening to speakers, admiring impressive research projects, and meeting some of the most influential HCI researchers. Two memorable encounters will forever remain in my mind: the first was a lunch conversation with Professor Ted Selker, the creator of the well-known red pointing stick on my ThinkPad (though there's a more familiar term for it; if you know, you know). The second? A close encounter with a startled yet adorably cute beaver during a run around Cagliari’s stunning salt mines. I hope to reconnect with many of the inspiring individuals I met at the conference in the future. In the meantime, let’s continue our ongoing pursuit of the perfect intelligent interface. Previous Next

< Back Tim Raats Associate Professor tim.raats@vub.be Most of us have grown up with public service broadcasting and linear television as the focal point for news, entertainment and TV drama. While television and public broadcasting still exist today, and still take up crucial positions in the European media landscape, the entire audio-visual constellation has – and is – changing at a rapid pace. My research interests lie on the crossroads of these changes and continuities. In my work, I combine policy research, production studies and media economics to analyse shifts in small audio-visual ecosystems. My expertise areas are public broadcasting policies and strategies on the on the one hand, (with specific attention for public broadcasting partnerships) and the sustainability of television industries in small markets, where I specialized in financing and production of TV drama. I currently lecture various media policy courses (political economy of the creative industries, media policy, EU Media Policy) at the Communication Studies Department of the Vrije Universiteit Brussel. I obtained a PhD in 2014 on the role and position of public service media in a networked society. As a senior researcher at imec-SMIT, I have been involved in contract research for various stakeholders (including VRT, the Flemish Sector Council), either as researcher, lead researcher or supervisor. Recent projects I was involved in include MeCETES (2014-2016) which analysed patterns of film and TV distribution in Europe, a 2016 stakeholder evaluation of the Flemish Game Fund, and a study examining the effectiveness of support mechanisms for television in Flanders (2016-2017) (in collaboration with Econopolis). Visit my research profile

< Back Public service algorithms: Balancing the scales between public mission and market pressures at the BBC and VRT. Iordache, C., Martin, D., & Johnson, C. (2025). Public service algorithms: Balancing the scales between public mission and market pressures at the BBC and VRT. MedieKultur: Journal of Media and Communication Research, 40(78), 59-80. https://doi.org/10.7146/mk.v40i78.147182 The public service media (PSM) shift to digital-first strategies has generated a rethinking of priorities in content production and distribution. This not only involves the integration of algorithms for the curation of their video-on-demand portals, but also a far-reaching reform at the organisational level. As personalisation through recommender systems is increasingly popularised by commercial streaming services, PSM are faced with a balancing act between market pressures and fulfilling their public mission. This article contributes to this discussion by investigating how public service algorithms are developed in practice in the cases of the BBC (UK) and VRT (Flanders-Belgium), and how their implementation is guided by the organisations’ remits. Through document analysis and semi-structured interviews conducted in 2024 with 16 PSM representatives, we discuss the ways in which market, policy, and organisational contexts inform the use of algorithms by the two organisations and suggest the need for a re-theorisation of public service algorithms. Public Service Media Previous Read the article Next

< Back Presenting VRT's digital first strategy 20 Jun 2024 Preliminary findings of Pieter's case study: The digital-first strategy of VRT In the span of a month, Pieter Van der Elst got to present his PhD work-in-progress at two different international conferences. First, he participated in the RIPE conference held in Lisbon from 16 til 18 May 2024. The RIPE conference is dedicated to research on Public Service Media (PSM) for innovation and sustainability. In a paper presentation about his case study on Flemish public broadcaster VRT's digital-first audio strategy, he outlined the innovative approaches VRT has adopted to adjust their operations to the platform era media landscape. The RIPE conference brings together established and junior researchers working on the topic of Public Service Media in the digital age. A perfect match with Pieter's work to present the preliminary findings, gather valuable feedback, and have some interesting discussions. Pieter's next stop was the workshop on 'Television Strategies in an On-Demand Driven Media Culture', at the Danish Aarhus University. In the two-day gathering on 13 and 14 June 2024, Pieter presented the VRT case study to academics and industry representatives, in hopes of enriching their work on television with his learnings and take-aways on digital audio. Previous Next

< Back Piecing the puzzle of VOD offerings: A comparison of eight US and local services in Flanders Iordache, C., Raats, T., Pakvis, M., & Asmar, A. (2023). Piecing the puzzle of VOD offerings: A comparison of eight US and local services in Flanders. Journal of Digital Media and Policy , 14 (3), 357 - 376. https://doi.org/10.1386/jdmp_00134_1 The study conducts a catalogue analysis that zooms in on the small market of Flanders (Belgium), and the content strategies of the eight most popular local and US-based players in the market. Through the comparative analysis, we investigate three main directions. First, we analyse the similarities and differences in the catalogue offerings of US and local video-on-demand (VoD) services. Second, we delve into the strategies of local players as they compete with US streamers and other legacy players. Third, we analyse the share and the characteristics of the Flemish titles on offer. The data was collected in the spring of 2022 and consists of 13,500 title entries. The findings point to a set of complex market dynamics. Local services and US-based players are competing and collaborating to create a jigsaw puzzle of on-demand offerings, through various strategies of complacency, resistance, differentiation and diversification/mimicry. Platforms Previous Read the article Next

< Back How Should We Measure Filter Bubbles? Michiels, L., Vannieuwenhuyze, J., Leysen, J., Verachtert, R., Smets, A., & Goethals, B. 2023. How Should We Measure Filter Bubbles? A Regression Model and Evidence for Online News. In Proceedings of the 17th ACM Conference on Recommender Systems. News media play an important role in democratic societies. Central to fulfilling this role is the premise that users should be exposed to diverse news. However, news recommender systems are gaining popularity on news websites, which has sparked concerns over filter bubbles. More specifically, editors, policy-makers and scholars are worried that these news recommender systems may expose users to less diverse content over time. To the best of our knowledge, this hypothesis has not been tested in a longitudinal observational study of real users that interact with a real news website. Such observational studies require the use of research methods that are robust and can account for the many covariates that may influence the diversity of recommendations at any given time. In this work, we propose an analysis model to study whether the variety of articles recommended to a user decreases over time in such an observational study design. Further, we present results from two case studies using aggregated and anonymized data that were collected by two western European news websites employing a collaborative filtering-based news recommender system to serve (personalized) recommendations to their users. Through these case studies we validate empirically that our modeling assumptions are sound and supported by the data, and that our model obtains more reliable and interpretable results than analysis methods used in prior empirical work on filter bubbles. Our case studies provide evidence of a small decrease in the topic variety of a user's recommendations in the first weeks after they sign up, but no evidence of a decrease in political variety. Recommender Systems Previous Read the article Next

Unveiling groundbreaking research, innovative projects, and insights on Streaming, Recommender Systems, and Platformization (SRP) in European Media Markets. Streaming, Recommenders and Platformization in European Media Industries S trategic Research Programme at imec-SMIT, Vrije Universiteit Brussel SRP Media In our digital age, understanding the interplay between technology, society, and economics is crucial. Our research aims to analyze and ensure the economic and cultural sustainability of content production, aggregation, and consumption in an era of streaming, recommenders and platformization in European Media Industries. SRP Media is part of the Media Economics & Policy unit at imec-SMIT, Vrije Universiteit Brussel . Our research Latest news updates Impressions of IBC 2025 AI Summer School 2025 Report Published: How to Ensure Visibility and Prominence for Media Services of General Interest in Flanders Ciao from EMMA in Rome! Talking about Stakeholder Perspectives at WMEMC Second Annual ALGEPI Workshop Policy Brief on Public Service Media in Belgium Looking back at IUI 2025 More updates Contact us Pleinlaan 9, 1050 Brussels, Belgium Submit Thanks for your message!

< Back Media Industries Conference, London 19 Apr 2024 An overview of our presentations at Media Industries in London From April 16 to 19, 2024, the Media Industries Conference took place at King’s College London. Our SRPMedia team was well represented with presentations related to our doctoral research tracks on news recommenders and public service media , our living lab project on streaming affordances in small media markets , and presentations on the ALGEPI and PSM-AP projects. Last but not least, the De Gruyter Handbook of Media Economics was presented, which contains several contributions from our team and is co-edited by Tim Raats. In this post, we provide an overview of the various presentations delivered by our team. Integrating Recommenders and Platformization in Small Media Markets’ Legacy Players In our presentation we offered insightful perspectives on navigating the challenges and opportunities within the evolving media landscape in Flanders. From exploring streaming and recommender systems in Flemish media to analyzing the importance of scalability in small markets. The Flemish public service media VRT has been working to establish a strong central brand with content brands inspired by findability. They are challenged to reclaim control over their audiences, rather than have to rely on third parties (like social media) to reach audiences. In their distribution strategy they adopt a 50% human, manual curated, and 50% curation by algorithms both for audio and video taking into account contextual factors for example offer a podcast in the morning and user is in the car, but entertainment or series when user is at home watching on TV. VRT chooses taste-broadening as way to go by recommending unconsumed content that is deemed to be in range of consumers interest, but still diverse enough. Additionally, we question the value of news recommender systems by examining the return on investment for commercial news organizations. Finally, the findings from the diary study show that the social aspect remains relevant even with the rise of VOD services, with viewing giving a sense of community. Also while SVOD services provide personalized interfaces, local BVOD services seem to function more as generic content collections with limited navigation support. Gatekeeping in the Digital Age: Newsroom Resistance to News Personalization? Aina Errando shared some valuable insights from her research, conducted in collaboration with Heritiana Ranaivoson and Adelaida Afilipoaie as part of the ALGEPI project . Their presentation highlighted the current challenges in implementing News Recommender Systems (NRS) in Spanish newsrooms, emphasizing the importance of bridging “tech-editorial gaps” and promoting collaboration among stakeholders within news organizations. Platformization Meets Universality Catalina Iordache presented insights from the comparative policy analysis of the platformization process of public service media (PSM) in seven media markets, as part of the PSM-AP project. Findings show a wide range of priorities set in the policy documents and digital strategies of PSM organizations, with a focus on People--connecting to and with audiences, Personalization - the use of recommender systems and the development of (public service) algorithms, and Prominence - with regard to PSM services/apps, content, and brands. Universality remains a core principle in the formulation of online strategies and regulatory recommendations. De Gruyter Handbook of Media Economics During a roundtable the new Handbook of Media Economics was presented, edited by Ulrike Rohn , M. Bjørn von Rimscha and Tim Raats . The handbook presents key contributions from scholars worldwide, providing a comprehensive exploration of current trends in media industries from diverse perspectives. Within the framework of understanding contemporary and future trajectories in media markets and industries, the volume delves into their influence on media organization and delivery, along with broader societal and market implications. Encompassing research at the crossroads of economics, management, political economy, and production studies, the handbook emphasizes the necessity for a robust interdisciplinary dialogue. Beyond scrutinizing present and forthcoming industry developments, the handbook addresses pivotal issues pertaining to media economics research methods and pedagogy. It serves as a valuable resource for scholars, students, and media professionals, providing insights into media economics as an academic field and delving into the multifaceted dynamics that shape the media landscape. Doing this, it contributes to the ongoing discourse on the evolving nature of media markets and their profound impact on society. The handbook is co-edited by Tim Raats and contains the following contributions from our team: Tim Raats, Developing a curriculum for media economics Alessandro D’Arma, Jeanette Steemers & Tim Raats, Public service media: Challenges for delivering universal public service in the platform age Catalina Iordache, The effects of streaming on media markets Heritiana Ranaivoson, Annelien Smets,& Pieter Ballon, Challenges and opportunities for recommender systems in media markets De Gruyter Handbook on Media Economics will be published on 20 May, 2024. Previous Next