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< Back Brett Binst PhD Researcher brett.binst@vub.be Brett Binst currently works on the ‘Serendipity Engine’ project as a PhD student. In this project, he studies serendipity in urban recommender systems. More specifically, he studies why system providers would design for serendipity, how they can design for it (through an affordances perspective) and the experience of serendipity in users of these urban recommender systems. Brett Binst acquired a Bachelor of science in Psychology at the VUB in 2020. Next, he completed his Master’s degree in Sociology in 2022. His masterthesis was a study into the preconditions and inequality of having an opinion about AI, inspired on Bourdieu’s theoretical framework laid out in La Distinction. Before starting on the Serendipity Engine project, he worked on the Barometer project, on behalf of the Koning Boudewijn Foundation in which he mainly performed quantitative analyses, comparing the labour market situation of migrants and natives. Visit my research profile

< Back The RecSys Conference 2024 8 Oct 2024 Our contributions to the 18th ACM Conference on Recommender Systems From 14 until 18 October 2024, the 18th ACM Conference on Recommender Systems takes place in Bari, Italy. Our SRP Media researchers have various contributions to this conference, as well as the preceding ACM Europe School on Recommender Systems . ACM Europe School on Recommender Systems 2024 During the ACM Europe School on Recommender Systems, leaders in the field give lectures on the practice, research, and state of the art in Recommender Systems. This year, there will be 120 attendees among which 90 students. Click here for the full program . On Tuesday 8 Octobe r, Lien Michiels will teach a lecture on Best Practices for Offline Evaluation . On Friday 11 October, Annelien Smets lectures a course on Digital Economics and Recommender Systems . The ACM Europe School on Recommender Syste ms is organized by Ludovico Boratto (University of Cagliari, Italy) , Cataldo Musto (University of Bari, Italy) , and Fedelucio Narducci (Polytechnic University of Bari, Italy) . How to Evaluate Serendipity in Recommender Systems: the Need for a Serendiptionnaire During the Doctoral Symposium , Brett Binst will present his work from the Serendipity Engine project. Recommender systems can assist in various user tasks and serve diverse values, including exploring the item space. Serendipity has recently received considerable attention, often seen as a way to broaden users’ tastes and counteract filter bubbles. However, the field of research on serendipity is fragmented regarding its evaluation methods, which impedes the progress of knowledge accumulation. This research plan proposes two studies to address these issues. First, a systematic literature review will be conducted to provide insights into how serendipity is currently studied in the field. This review will serve as a reference for novice researchers and help mitigate fragmentation by presenting a thorough overview of the field. This systematic literature review has already revealed a significant gap: the lack of a validated, widely accepted method for evaluating serendipity. Therefore, the second part of this research plan is to develop a validated questionnaire, the serendiptionnaire, to measure serendipity. This tool will provide a ground truth for evaluating serendipity, aiding in answering fundamental questions within the field and validating offline metrics. GenUI(ne) CRS: UI Elements and Retrieval-Augmented Generation in Conversational Recommender Systems with LLMs [demo] During the poster session on Tuesday, Ulysse Maes will present joint work with Lien Michiels and Annelien Smets . Previous research has used Large Language Models (LLMs) to develop personalized Conversational Recommender Systems (CRS) with text-based user interfaces (UIs). However, the potential of LLMs to generate interactive graphical elements that enhance user experience remains largely unexplored. To address this gap, we introduce “GenUI(ne) CRS,” a novel framework designed to leverage LLMs for adaptive and interactive UIs. Our framework supports domain-specific graphical elements such as buttons and cards, in addition to text-based inputs. It also addresses the common LLM issue of outdated knowledge, known as the “knowledge cut-off,” by implementing Retrieval-Augmented Generation (RAG). To illustrate its potential, we developed a prototype movie CRS. This work demonstrates the feasibility of LLM-powered interactive UIs and paves the way for future CRS research, including user experience validation, transparent explanations, and addressing LLM biases. It’s (not) all about that CTR: A Multi-Stakeholder Perspective on News Recommender Metrics During the poster session on Thursday, Hanne Vandenbroucke will present joint work with Annelien Smets . Recommender systems are increasingly used by news media organizations. Existing literature examines various aspects of news recommender systems (NRS) from a computational, user-centric, or normative perspective. Yet research advocates studying the complexities of real-world applications around NRS. Recently, a multi-stakeholder approach to NRS has been adopted, allowing to understand different stakeholder perspectives on NRS development and evaluation within the news organization. However, little research has been done on the different key performance indicators (KPIs) and metrics considered valuable by different stakeholders. Based on 11 interviews with professionals from two commercial news publishers, this paper demonstrates that stakeholders prioritize distinct KPIs and metrics related to the reach-engagement-conversion-retention funnel. The evaluation of NRS performance is often limited to short-term metrics like CTR, overlooking the multiplicity of stakeholders involved. Our findings reveal how different purposes, KPIs, and metrics are valued from the journalistic, commercial, and tech logic. In doing so, this paper contributes to the multi-stakeholder approach to NRS, advancing our understanding of the real-world complexity of NRS development and evaluation. Navigating Discoverability in the Digital Era: a Theoretical Framework During the MuRS: Music Recommender Systems Workshop 2024 , Rebecca Salganik will present joint work with Valdy Wiratama , Heritiana Ranaivoson and Adelaida Afilipoaie (FairMuse). The proliferation of digital technologies in the distribution of digital content has prompted concerns about the effects on cultural diversity in the digital era. The concept of discoverability has been presented as a theoretical tool through which to consider the likelihood that content will be interacted with. The multifaceted nature of this broad theme has been explored through a variety of domains that explore the ripple effects of platformization, each with its own unique lexicography. However, there is yet to be a unified framework through which to consider the complex pathways of discovery. In this work we present the discovery ecosystem, consisting of six individual, interconnected components, that encompass the pathway of discovery from start to finish. Workshop on Normative Design and Evaluation of Recommender Systems (NORMalize) On October 18, Lien Michiels is co-organizing t he Second Workshop on Normative Design and Evaluation of Recommender Systems. Previous Next

< Back Second Annual ALGEPI Workshop 19 May 2025 Insights on AI, Innovation and Media Regulation On April 23rd, 2025, the Université de Namur hosted the second ALGEPI Annual Workshop , bringing together researchers, students, and industry experts to discuss how AI is shaping the media landscape. The day was packed with presentations on artificial intelligence, algorithmic recommender systems, media regulation, and user-centric innovation. Some highlights: Prof. Heritiana Ranaivoson kicked off the day by outlining the ALGEPI project, which is a collaborative effort aiming to tackle the challenges AI poses to epistemic welfare. Dr. Lien Michiels dissected the elusive concept of filter bubbles, stressing the need for diverse, but standardised research methods and validated metrics that consider all stakeholders to gather robust evidence and make meaningful normative judgements about diversity and recommender systems. Aina Errando , Michelle Kulig, and Hanne Vandenbroucke shared some findings from their comparative systematic literature review on the multi-stakeholder challenges and opportunities of news recommender systems in newsrooms. Their work highlights the need for more interdisciplinary and multi-method research to address both organisational and societal challenges, and also to explore the opportunities of news recommender systems more holistically. For the full report on the 2nd ALGEPI workshop, have a look at https://www.algepi.com/ai-innovation-media-regulation-insights-ii-annual-workshop/ Previous Next

< Back Dubbing wars: localisation strategies of transnational streaming services for Spanish ‘original’ works Gallo, P., & Iordache, C. (2026). Dubbing wars: localisation strategies of transnational streaming services for Spanish ‘original’ works. Convergence: The International Journal of Research into New Media Technologies , 1-17. https://doi.org/10.1177/1354856526141627 This research investigates the intricate process of localising subscription video-on-demand (SVOD) services on a transnational scale, with a specific focus on the translation of Spanish ‘original’ and ‘exclusive’ works of Netflix and Prime Video. As SVOD companies expand their services internationally, the necessity of adapting to diverse national markets becomes paramount. Language emerges as a pivotal factor in this process: audiovisual works must provide adequate subtitling and dubbing options to address the diverse linguistic nuances of international audiences. The research aims to analyse the language localisation strategies for Spanish works in transnational SVOD services, by examining the dubbing and subtitling options offered. The article provides a mapping of the strategies and partners adopted by these companies focussing on a sample of local works. Additionally, by collecting data from the two SVOD services and through interviews with dubbing studios, the research analyses mergers, acquisitions and power relations between dubbing companies, as well as the impact on competition generated by transnational streaming services. Both Netflix and Amazon have increasingly added more language options for content offerings as part of their internationalisation, which has favoured the proliferation of a specific type of company and business model in the dubbing sector. This consists of transnational corporations that have provided localisation services in the wake of the internationalisation of streamers, and that have managed to keep up with the demands through mergers and acquisitions with studios in foreign countries. Platforms Previous Read the article Next

< Back Lien Michiels Postdoctoral Researcher lien.michiels@vub.be Lien Michiels is a Postdoctoral Researcher at imec-SMIT, Vrije Universiteit Brussel and the Adrem Data Lab in the Department of Computer Science at the University of Antwerp. Her research focuses on diversity, discovery and filter bubbles in recommender systems. Previously, she combined her PhD research with her work as a Machine Learning Engineer at Froomle , who provide their recommendation platform as a service to media companies around the globe. She obtained a master's degree in Mathematical Engineering at the KULeuven in 2017. Visit my research profile

< Back Our presentations at ECREA 1 Oct 2024 The SRP team presented their work at the ECREA 2024 Conference The 10th edition of the European Communication Research and Education Association Conference (ECREA) took place on 24-27 September 2024 in Ljubljana, Slovenia. The VUB’s Communication Sciences department had a large delegation of over 25 researchers at the conference, including several SRP team members. On Wednesday 25 September, Tim Raats presented a paper entitled ‘ Ensuring visibility of European public service media. An analysis of policy, industry and academic views on prominence measures in Belgium ’, as part of the session ‘Public service and the public interest in European Media’, in the Communication, Law and Policy section. The presentation was based on research conducted together with SRP colleagues Adelaida Afilipoaie and Pieter Van der Elst . On Thursday 26 September, Catalina Iordache presented research conducted together with Catherine Johnson (University of Leeds) on ‘ Balancing the scales between public service algorithms and editorial curation , the cases of BBC and VRT. The presentation was part of pre-constituted panel on ‘Comparative approaches to public service media disruption: The transformation of values, norms and prevailing structures in the age of platforms’, hosted by the Public Service Media in the Age of Platforms ( PSM-AP ) project. And on the final day of the conference, Friday 27 September, Noëmie Forest presented the paper ‘What will we be streaming tonight? And why? An analysis of motivations for VOD consumption in Belgium’, co-authored with Isabelle Puskas, Wendy Van den Broeck and Tim Raats. The presentation was part of the session on Audiovisualities and Audiences, in the section Audience and Reception Studies. Tim Raats and Catalina Iordache also presented their ongoing work on assessing discoverability and prominence on VOD services as part of the roundtable ‘ Re-conceptualising the television 'text' for the platform age: textual analysis, texts and interfaces ’, organised in the Television Studies section. As part of the business meetings, Catalina Iordache and Tim Raats have also be re-elected as vice-chairs of their respective sessions Media Industries and Cultural Production and Communication, Law and Policy . Previous Next

< Back 10 trends in streaming market 1 Mar 2024 Report of the Living Lab project Discover the first deliverable of the Streaming Affordances for Small Media Markets living Lab project, in which the research team outlines 10 key trends in the international streaming market that have an impact on developments in the Flemish market (the report is in Dutch). The 10 trends highlight a diversification of genre and payment modules, and a quest of streamers for revenue and profit rather than market dominance and number of subscribers. Trendrapport voor 'proeftuin Streaming Affordances for Small Media Markets .pdf Download PDF • 3.74MB Previous Next

< Back GenUI(ne) CRS: UI Elements and Retrieval-Augmented Generation in Conversational Recommender Systems with LLMs Maes, U. , Michiels, L. & Smets, A. , (8 Oct 2024). GenUI(ne) CRS: UI Elements and Retrieval-Augmented Generation in Conversational Recommender Systems with LLMs. Proceedings of the 18th ACM Conference on Recommender Systems. Bari: ACM , p. 1177-1179 Previous research has used Large Language Models (LLMs) to develop personalized Conversational Recommender Systems (CRS) with text-based user interfaces (UIs). However, the potential of LLMs to generate interactive graphical elements that enhance user experience remains largely unexplored. To address this gap, we introduce "GenUI(ne) CRS," a novel framework designed to leverage LLMs for adaptive and interactive UIs. Our framework supports domain-specific graphical elements such as buttons and cards, in addition to text-based inputs. It also addresses the common LLM issue of outdated knowledge, known as the "knowledge cut-off," by implementing Retrieval-Augmented Generation (RAG). To illustrate its potential, we developed a prototype movie CRS. This work demonstrates the feasibility of LLM-powered interactive UIs and paves the way for future CRS research, including user experience validation, transparent explanations, and addressing LLM biases. Recommender Systems Previous Read the article Next

< Back Noëmie Forest Researcher noemie.janine.forest@vub.be Eager to investigate the role of platforms and streamers in constantly evolving media ecosystems, Noëmie joined SMIT as a researcher in the Media Economics and Policy unit in 2023. She will research personalization and recommender systems, and their value in media markets. Noëmie studied Communication Sciences at the Vrije Universiteit Brussel, between 2018 and 2022, with a specialisation in media, strategic communication, and marketing. Her specialisation gave her the chance to immerse herself in this subject through her thesis, “Does one size fit all? – How do five Belgian food brands position themselves on the international market?”. Noëmie dived into the world of different brands, and earned herself a great distinction in 2022. Before starting at SMIT, she worked at Think BBDO as strategic executive, to assist organizations in their branding and communication. Visit my research profile

< Back Valdy Wiratama Researcher valdy.wiratama@vub.be Growing up during the Web 2.0 era, the Internet left a favorable impression on my engagement with content. From dissecting events through discourses on Twitter to discovering new music on MySpace, the Internet enabled me to access a wider range of information and adjust my preferences at a reduced rate. While I can easily comprehend these effects as a media consumer, I can only imagine the ramifications on actors, musicians, and even print journalists. Lower barriers to entry amplify their competition, while the resulting oversupply threatens the exposure of smaller creators. With a current comprehension that requires more observations, my professional work is dedicated to understanding the supply side of the media industry and its relationship with the Internet. Particularly, I am invested in recorded music and its ever-evolving response towards platformization, online intermediaries, and the long tail hypothesis. As for the foundation that guides my outset in rationalizing phenomena, the baseline principle that I commonly work with is economics. I earned a Bachelor’s degree in economics from the University of Indonesia in 2018 and a Master of Arts degree (M.A.) in cultural economics and entrepreneurship from Erasmus University Rotterdam in 2022. To obtain the latter, I completed a thesis with the title ‘Backstage at the Pandemic: How the COVID-19 Pandemic Affected Music Production, Distribution, and Promotion among Unsigned Musicians in the United States.’ After defending the thesis, I joined an independent record label in The Netherlands before transitioning to a role that centers around fairness in the music industry (the FairMusE project) at imec-SMIT, VUB in 2023. Visit my research profile

< Back Ashley Amerson Product Manager This is placeholder text. To change this content, double-click on the element and click Change Content. Want to view and manage all your collections? Click on the Content Manager button in the Add panel on the left. Here, you can make changes to your content, add new fields, create dynamic pages and more. Your collection is already set up for you with fields and content. Add your own content or import it from a CSV file. Add fields for any type of content you want to display, such as rich text, images, and videos. Be sure to click Sync after making changes in a collection, so visitors can see your newest content on your live site. info@mysite.com 123-456-7890

< Back Brad Grecco Marketing Associate This is placeholder text. To change this content, double-click on the element and click Change Content. Want to view and manage all your collections? Click on the Content Manager button in the Add panel on the left. Here, you can make changes to your content, add new fields, create dynamic pages and more. Your collection is already set up for you with fields and content. Add your own content or import it from a CSV file. Add fields for any type of content you want to display, such as rich text, images, and videos. Be sure to click Sync after making changes in a collection, so visitors can see your newest content on your live site. info@mysite.com 123-456-7890