ACM Conference on Recommender Systems Returns in Hybrid Physical/Virtual Format

RecSys 2021 to Feature Contributions by Leading Researchers and Major Companies

New York, NY, September 20, 2021 – The latest research and advancements in recommender systems will be presented at RecSys 2021, the 15th ACM Conference on Recommender Systems. RecSys will be held from September 27 through October 1 physically in Amsterdam, Netherlands, with an inclusive format that makes possible remote attendance for those who need it.

The conference, hosted by the Association for Computing Machinery’s Special Interest Group on Computer-Human Interaction (ACM SIGCHI), is the premier international forum for the presentation of new research results, systems and techniques in the broad field of recommender systems. RecSys brings together the major international research groups working on recommender systems, along with many of the world’s leading companies active in e-commerce and other adjacent domains.

RecSys 2021 will feature a full program of research papers, workshops, and tutorials, as well as an industry track and a doctoral symposium. Highlights include the return of the RecSys Challenge, which this year will focus on the real-world task of Tweet engagement prediction in a dynamic environment. Also returning this year is “Women in RecSys,” a coordinated set of program offerings and networking events to foster diversity among the RecSys community.

“Graph Neural Networks for Knowledge Representation and Recommendation”
Max Welling, Research Chair, Machine Learning, University of Amsterdam and Distinguished Scientist, Microsoft Research

“Regulating Recommenders”
Natali Helberger, Professor of Law and Digital Technology, University of Amsterdam, and Member, Board of Directors, Institute of Information Law

Contact Jim Ormond at for media registration and related inquiries.


SIGCHI, the ACM Special Interest Group on Human-Computer Interaction (HCI), is the premier international society for professionals, academics and students who are interested in human-technology and human-computer interaction (HCI). SIGCHI serves as a forum for ideas on how people communicate and interact with computer systems. This interdisciplinary group of computer scientists, software engineers, psychologists, interaction designers, graphic designers, sociologists, and anthropologists is committed to designing useful, usable technology which has the potential to transform individual lives.

About ACM

ACM, the Association for Computing Machinery, is the world's largest educational and scientific computing society, uniting educators, researchers, and professionals to inspire dialogue, share resources, and address the field's challenges. ACM strengthens the computing profession's collective voice through strong leadership, promotion of the highest standards, and recognition of technical excellence. ACM supports the professional growth of its members by providing opportunities for life-long learning, career development, and professional networking.

Jim Ormond
ACM Media Relations

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