Date: September 22–26, 2025
Venue: O2 Universum, Prague
Project Manager: Kristýna Bernerová

Introduction:
The ACM RecSys 2025 conference took place from September 22 to 26, 2025, in the heart of Europe – Prague. This prestigious event attracted leading experts in recommender systems from around the world. Participants gathered in the modern O2 Universum Congress Center, which became the epicenter of discussions about the future of technology, artificial intelligence, and ethics in recommender systems. The conference was held under the auspices of the President of the Czech Republic.

Main Section:
The conference program was rich and diverse. Participants could look forward to keynote speeches, workshops, panel discussions, and research paper presentations. Key topics included fairness in recommender systems, hybrid models combining large language models with traditional approaches, and the energy efficiency of algorithms. The workshops covered a wide range of specialized areas, such as the evaluation and use of recommender systems with large language models, recommender systems for sustainability and social good, or context-aware recommender systems, allowing participants to explore the latest trends and practical applications in greater depth. The conference also featured an industry track and a doctoral symposium, which enabled the connection between academia and practice. The workshops further supported interdisciplinary collaboration and an innovative approach to research.

Cultural and Social Program:
The conference also included a rich cultural and social program. Evening events were held at the Červený Jelen restaurant, located in the historic Špork Palace. Participants could enjoy excellent gastronomy and beer from the world’s largest beer tank. The venue, including the original bank vault, provided a unique atmosphere for informal meetings and networking.

Awards:
At the RecSys 2025 conference in Prague, awards were also presented for the best long and short papers, recognizing outstanding research contributions in the field of recommender systems.

Conclusion:
The RecSys 2025 conference in Prague once again confirmed its position as a key event in the field of recommender systems. Participants left with new knowledge, inspiration, and valuable contacts that will help them take their research and projects to the next level. The conference also promoted diversity and inclusion, for example through the Women in RecSys initiative, which provided a platform to share experiences, celebrate female role models in the field, and recognize the best research contributions by women. Prague proved to be an ideal place for professionals to meet and exchange knowledge in the fields of technology and innovation.

Special thanks go to Project Manager Kristýna Bernerová and her team for their professional approach, meticulous organization, and extraordinary effort, which made it possible to hold the conference at such a high level.