Conferences & Calendar
Table of Contents
Our Google Conference & Event Calendar
Our calendar shows all the conferences we consider relevant for the RecSys community. For selected conferences, we also include submission deadlines. To see a list of all events, switch to the “Agenda” tab and select “Look for more”. Open the calendar in a new browser window for a better overview. Click the “+” at the bottom of the calendar to add the calendar to your own Google account. If you want to help us maintain the calendar, please contact us.
Overview of Academic Conferences for Recommender-Systems Research
When it comes to publishing and discovering cutting-edge research in recommender systems (RecSys), several conferences are of key importance. Below is a list of the most relevant conferences in this domain, ordered by their relevance to RecSys research. We also include their typical timeframes, CORE rankings, and information on acceptance rates where available.
1. ACM Recommender Systems (RecSys)
CORE Ranking: A
Typical Timeframe: September or October
Acceptance Rate: Approximately 20-25%
The ACM Recommender Systems (RecSys) conference is the most specialized and prestigious venue for recommender system research. It covers all aspects of recommender systems, including algorithms, user studies, and industry applications. With a CORE A ranking, it is widely considered the top conference to publish or present research specifically focused on recommender systems. RecSys also organizes tutorials, workshops, and industry tracks, making it a comprehensive event for both researchers and practitioners.
2. ACM SIGIR Conference on Research and Development in Information Retrieval
CORE Ranking: A*
Typical Timeframe: July or August
Acceptance Rate: Approximately 20%
ACM SIGIR is one of the oldest and most respected conferences in the field of information retrieval (IR), and its impact extends into recommender systems, particularly in areas like search-based recommendations, personalization, and ranking algorithms. While not exclusively focused on recommender systems, SIGIR is highly relevant for research intersecting with IR methodologies, making it a valuable venue for publishing and discovering recommender system research with an IR focus.
3. The Web Conference (formerly WWW)
CORE Ranking: A*
Typical Timeframe: April or May
Acceptance Rate: Approximately 15-20%
The Web Conference (WWW) focuses on a broad range of topics related to the World Wide Web, including recommender systems, machine learning, and user modeling. It is a prestigious venue for interdisciplinary work that links recommendation technologies with web data, social networks, and user behavior on the web. Given its broad scope and high impact, it is a great venue for showcasing recommender systems research with a strong web component.
4. ACM International Conference on Web Search and Data Mining (WSDM)
CORE Ranking: A
Typical Timeframe: February or March
Acceptance Rate: Approximately 15%
WSDM is a highly selective conference that focuses on data mining, search, and web technologies. Its relevance to recommender systems lies in its emphasis on machine learning, large-scale data processing, and user behavior modeling—key areas of research for modern recommender systems. WSDM is known for its technical depth and attracts high-quality submissions from researchers working on recommendation algorithms and system evaluations.
5. User Modeling, Adaptation, and Personalization (UMAP)
CORE Ranking: B
Typical Timeframe: June or July
Acceptance Rate: Approximately 25-30%
UMAP is a conference focused on systems that adapt to individual user needs, making it particularly relevant for recommender systems research involving personalization, user modeling, and adaptive interfaces. While not as broad in scope as some of the A* conferences, UMAP provides a focused venue for user-centric research, making it a strong choice for recommendation-related work that emphasizes personalization.
6. European Conference on Information Retrieval (ECIR)
CORE Ranking: A
Typical Timeframe: March or April
Acceptance Rate: Approximately 25-30%
ECIR is the leading European conference on information retrieval and has increasingly included recommender systems research, especially work that bridges IR and recommender systems technologies. Its relevance to recommender systems research is growing, particularly in topics such as personalized search and hybrid approaches that combine IR and recommendation methods.
7. Conference on Information and Knowledge Management (CIKM)
CORE Ranking: A
Typical Timeframe: October or November
Acceptance Rate: Approximately 20-25%
CIKM focuses on information management, knowledge discovery, and data mining, with a particular emphasis on integrating diverse data sources and improving knowledge extraction. It has become an increasingly important venue for recommender systems research, especially for those working on integrating large-scale data sources, improving recommendation accuracy, or applying knowledge management techniques in recommender systems.
News About Recommender-Systems Events
Is SIGIR 2025 desk-rejecting RecSys manuscripts only to reverse its decision later?
On X (Twitter), some researchers report that SIGIR 2025 had desk-rejected a large proportion of submissions (35%), most of them being related to recommender systems. Xiangnan He even concluded that recommender systems — mentioned in the call for papers and historically one of the most popular topics — were “kicked off from ACM SIGIR” entirely. […]
ACM UMAP 2025: (Preliminary) Call for Papers
UMAP (B ranked) released a preliminary Call for Papers for the UMAP 2025 conference in New York from June 16 – 20, 2025. We also updated our conference calendar. The ACM UMAP 2025 conference will focus on user modeling, adaptation, and personalization. Topics include recommender systems, generative AI, intelligent interfaces, ethical issues, and sustainability. Key […]
ACM RecSys 2025 to be held in Prague
The next edition of the ACM RecSys Conference will take place in Prague, Czech Republic, from September 22 to 26, 2025. ACM RecSys, an A-ranked conference, continues to attract top-tier research in recommendation algorithms, evaluation metrics, and applications in various domains. Prague, a well-established academic hub with institutions excelling in computer science and AI, offers […]
ACM RecSys Registration 2024 Opens NOW
Registration for the ACM RecSys Conference 2024 is now open! To register for RecSys 2024, participants must use the designated registration portal. The main conference registration is mandatory for attendance, which includes an evening reception at the Villa Romanazzi Carducci with food and drinks. Each registration comes with one ticket, and additional guest tickets can […]
2023 ACM RecSys Conference with the lowest number of industry sponsors since 2015
The 17th ACM Conference on Recommender Systems (ACM RecSys) in Singapore has ended some weeks ago. Like every year, there were many amazing presentations, and many well-known IT companies sponsored the conference, including Google, Meta, Amazon, and Netflix. However, the number of sponsors of the ACM RecSys conference took a sharp fall this year. Only […]
The first Dutch-Belgian Workshop on Recommender Systems
I have been advocating more ‘local’ initiatives to connect the regional recommender-systems communities for a long time (e.g. I am still hoping for a European RecSys Conference). As such, I am very glad to see the announcement of the “DBWRS“. The DBWRS is the first Dutch-Belgian Recommender Systems Workshop, taking place 14-15 December 2023 in […]
Stats on Submitted & Accepted Papers and Acceptance Rate at the ACM Recommender Systems Conference until 2023
Update 13-11-2023: I added the numbers for 2023 The ACM Conference on Recommender Systems regularly releases numbers relating to its acceptance rate. We visualized the numbers as shown below and it’s good to see that the number of submitted papers slowly but steadily increases over time. From just above 100 papers in the first years […]
Big Update of our RecSys Conference Calendar
We updated our conference calendar with the latest dates and locations for all major conferences relating to recommender systems, including SIGIR, UMAP, CIKM, SIGCHI, and machine learning conferences like NeurIPS and ICML. The map below shows the locations of a few selected conferences.
List of 18 Workshops at ACM RecSys 2023 published
ACM RecSys released the list of 18 accepted workshops. That’s quite a number, and as high as in 2021. Looking at time, the number of workshops constantly increased from 3 workshops in 2009 to 10 in 2015 and, as mentioned, 18 workshops in 2021 and 2023. For a full list and details, visit the ACM […]
The Web Conference 2023 requires at least one full non-student registration for accepted papers, even for students.
The Web Conference 2023 (formerly WWW) is a notable conference in the field of recommender-systems. This year, the conference chairs decided that authors of accepted papers must register at least for one full on-site non-student 3-day ticket, starting at $900, even if the presenting, or all, author(s) are students. That is quite uncommon to my […]
Is SIGIR 2025 desk-rejecting RecSys manuscripts only to reverse its decision later?
On X (Twitter), some researchers report that SIGIR 2025 had desk-rejected a large proportion of submissions (35%), most of them being related to recommender systems. Xiangnan He even concluded that recommender systems — mentioned in the call for papers and historically one of the most popular topics — were “kicked off from ACM SIGIR” entirely. […]
ACM UMAP 2025: (Preliminary) Call for Papers
UMAP (B ranked) released a preliminary Call for Papers for the UMAP 2025 conference in New York from June 16 – 20, 2025. We also updated our conference calendar. The ACM UMAP 2025 conference will focus on user modeling, adaptation, and personalization. Topics include recommender systems, generative AI, intelligent interfaces, ethical issues, and sustainability. Key […]
RecSys Summer School 2025 in Vienna Announced: A Must-Attend for Students
Yesterday, at the closing session of the ACM Recommender Systems Conference in Bari, exciting news was shared. The RecSys Summer School 2025 will take place in Vienna from September 15-19, 2025. Just one week later, the ACM RecSys Conference 2025 will be held in Prague. This is an incredible opportunity for students interested in recommender […]
ACM RecSys 2025 to be held in Prague
The next edition of the ACM RecSys Conference will take place in Prague, Czech Republic, from September 22 to 26, 2025. ACM RecSys, an A-ranked conference, continues to attract top-tier research in recommendation algorithms, evaluation metrics, and applications in various domains. Prague, a well-established academic hub with institutions excelling in computer science and AI, offers […]
Dagstuhl Seminar 24211: Evaluation Perspectives of Recommender Systems — Driving Research and Education
Recommender-Systems Evaluation is and maybe always has been a challenge. The Dagstuhl Seminar 24211 attempted to improve the current state of recommender-systems evaluation, and as a participant, I may report that it succeeded ;-). The Dagstuhl Seminar 24211, held from May 20 to May 24, 2024, focused on “Evaluation Perspectives of Recommender Systems: Driving Research […]
ACM RecSys Registration 2024 Opens NOW
Registration for the ACM RecSys Conference 2024 is now open! To register for RecSys 2024, participants must use the designated registration portal. The main conference registration is mandatory for attendance, which includes an evening reception at the Villa Romanazzi Carducci with food and drinks. Each registration comes with one ticket, and additional guest tickets can […]
RecSys Workshops at SIGIR 2024
The SIGIR 2024 — the 47th International ACM SIGIR Conference on Research and Development in Information Retrieval — is taking place in July in Washington. As usual, SIGIR features several workshops related to recommender systems. Exciting this year are particularly the Third Workshop on Personalization and Recommendations in Search (PaRiS) and the International Workshop on […]
Yes! In 2024, there will be another Summer School on Recommender Systems (in Bari, Italy)
Once in a while, there are recommender-systems summer schools co-located with the ACM Recommender Systems Conference. Also, this year, there will be a summer school organized by Ludovico Boratto, Cataldo Musto and Fedelucio Narducci. Supposedly, as in previous years, there will be a panel of mentors who belong to the most reputable recsys researchers in […]
The ‘ACM TORS’ journal had a successful first-year
ACM Transactions on Recommender Systems (ACM TORS) had a successful first year. Since March 2023 four issues have been published.
“Recommender Systems – Frontiers in Big Data” has published 18 articles since its launch
We regularly report about the ACM TORS journal, but there is another journal for recommender systems research: The “Recommender Systems” journal that is part of the “Frontiers in Big Data” series. The Recommender Systems journal even was launched a few months before ACM TORS was announced. While the Frontiers Media publisher is subject to criticism, […]