Call for Contributions

We invite you to submit technical contributions to RecSys 2026 – the vibrancy of the RecSys conference series is due to the creativity and efforts of members of the RecSys community. We have several different categories of contribution you may use to share research results, disseminate industry experiences, and convene groups. We will also post a list of accepted workshops to solicit workshop papers later this Spring.

In addition to the opportunities listed here, we invite you to participate as a sponsor or as a student volunteer.

RecSys 2026 is also pleased to introduce Research and Practice Notes, short-form contributions that allow researchers and practitioners to share interesting findings, experiences, methods, and cases. R&P Notes will be presented as posters at the conference.

Important Dates

ACM RecSys 2026 will be held in Minneapolis, Minnesota, USA, September 28 – October 2, 2026 (with Doctoral Symposium scheduled for September 27).

With regard to the research paper submission process, the most important dates are:

	Submission	Rebuttal	Notification	Camera-ready
Long papers	Abstr.: Apr 14, 2026 Paper: Apr 21, 2026	Jun 4-9, 2026	Jul 9, 2026	Jul 27, 2026
Short papers	Abstr.: Apr 14, 2026 Paper: Apr 21, 2026	Jun 4-9, 2026	Jul 9, 2026	Jul 27, 2026
Past, Present and Future papers	Abstr.: Apr 14, 2026 Paper: Apr 21, 2026	Jun 4-9, 2026	Jul 9, 2026	Jul 27, 2026
Reproducibility and Replicability papers	Abstr.: Apr 28, 2026 Paper: May 5, 2026	–	Jul 9, 2026	Jul 27, 2026
Resource papers	Abstr.: Apr 28, 2026 Paper: May 5, 2026	–	Jul 9, 2026	Jul 27, 2026
Industry papers	Paper: May 21, 2026	–	Jul 9, 2026	Jul 27, 2026

 

Further dates for the other submissions:

	Submission	Notification	Camera-ready
Workshop proposals	Mar 10, 2026	Apr 3, 2026	Jul 20, 2026
Tutorial proposals	Apr 28, 2026	May 13, 2026	Jul 20, 2026
Doctoral Symposium	Jun 9, 2026	Jul 9, 2026	Jul 27, 2026
Demo	Jul 15, 2026	Aug 10, 2026	Aug 17, 2026
Research and Practice Notes	Jul 15, 2026	Aug 10, 2026	Aug 17, 2026

 

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone.

Main Track: Long / short / past, present and future papers

The 20th ACM Conference on Recommender Systems (RecSys 2026), the leading conference for research on the foundations and applications of recommendation technologies, will take place from September 28 to October 2nd, 2026, in Minneapolis, Minnesota, USA.

CFP IN BRIEF

We look forward to receiving your contributions for RecSys 2026 handled by the program chairs:

• Long papers: We welcome high-impact original papers that contribute to all aspects of recommender systems. The paper length should be commensurate with the depth of contribution, comprehensiveness of analyses, and thorough discussion of related work. Each accepted paper will be included in the conference proceedings and presented at the conference. We expect the review process to be highly selective.
• Short papers: This track is intended for contributions that can be described completely and rigorously within a smaller page limit. These papers should present focused, self-contained research stories supported by experimental validations.
• Past, present and future papers: To mark the twentieth year of the RecSys Conference, this track encourages papers that consider a broad perspective on how the field has evolved and the challenges and directions that lay ahead.

The RecSys community values recommender systems’ human and economic impacts as much as the underlying algorithms. Therefore, we invite contributions to RecSys 2026 that cover the full spectrum of recommender system research. As always, we will prioritize the quality and potential impact of the submitted work.

• Submissions will be handled electronically via EasyChair. The abstracts are due by April 14, 2026, and the papers are due by April 21, 2026.
• Submissions should be anonymous (see Anonymity policy) and will be reviewed by at least three members of the Program Committee and overseen by a Senior PC member. There will be a rebuttal phase during which authors can provide a brief narrative to clarify any misconceptions that may have arisen from the reviews.
• At the time of submission, information about all authors and authorship order must be established — no changes will be allowed after the review process begins. Moreover, authors must declare conflicts of interest with PC and SPC members before submitting the full paper. Failure to declare COI can result in desk-rejection. (See Authorship policy and Desk Rejection policy.)
• RecSys 2026 has a no dual submission policy, which means submitted manuscripts must not be under review at another publication venue, including other RecSys 2026 tracks. Submission of the paper to pre-print sites like arXiv is allowed under strict guidelines. (See Pre-Print policy.)
• Contributions must be self-contained. The main text of the submitted paper is limited to 8 content pages for long papers and 4 content pages for short papers and past/present/future papers (using the ACM 2-column template). Reference pages do not count towards the content pages. Authors are encouraged to submit auxiliary material to enhance reproducibility; or include a link to an anonymous repository for code, pre-registered studies, and dataset information within their paper. Reviewers, however, are not required to review these materials.

Contributions will be reviewed based on their relevance to the RecSys community, scientific rigor, and impact.

At least one author from each accepted submission must attend the conference in person to present their work and participate in the Q&A session. (See In-Person Attendance policy.)

Along with other ACM conferences, RecSys 2026 is moving toward full open access. The Article Processing Charge (APC) is covered if the corresponding author‘s institute is enrolled in ACM Open plan, or the fee has to be paid by the authors before publishing. (See ACM’s New Open Access Publishing Model.)

IMPORTANT DATES FOR LONG, SHORT, AND PAST/PRESENT/FUTURE PAPERS

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone.

• Submission open: March 2, 2026
• Paper abstracts (main track) due: April 14, 2026
• Papers (main track) due: April 21, 2026
• Author rebuttal period for papers: June 4-9, 2026
• Paper notifications: July 9, 2026
• Camera-ready due: July 27, 2026 (strict)

DETAILED SUBMISSION GUIDELINES

Submitted contributions should focus on original and significant work that provides lasting value. The research should address the theory and/or practice of recommender systems. We welcome contributions that showcase innovative uses of algorithms, novel interfaces and explore the benefits and challenges of applying recommender system technology in real-world applications that impact a broad audience and environment.

Evaluations of proposed solutions or applications must align with the claims made in the paper. Depending on the nature of the contribution, this could include simulation studies, offline evaluations, A/B tests, or controlled user experiments.

Research methods and technical procedures should be detailed enough to allow for scrutiny and reproducibility. In other words, contributions should be self-contained. While we understand that user data may be proprietary or confidential, we encourage the sharing of anonymized and cleaned datasets, along with data collection procedures and code. Hence, to enhance reproducibility, we encourage authors to include in their manuscript, when pertinent, a link to an anonymous repository where they can include for example their code or data. Authors can also submit auxiliary material to enhance reproducibility (e.g., experiment details, proof details, appendixes, and study pre-registration). For this, the authors may refer to Anonymous GitHub. However, reviewers are not obligated to review these materials.

Results should be communicated clearly, and the implications of the findings for RecSys and other fields should be explicitly discussed.

Papers must describe original work that has not been previously published, not accepted for publication elsewhere, and not simultaneously submitted or currently under review in another journal or conference, including the other tracks of RecSys 2026. See this brief checklist to strengthen a RecSys paper, for authors and reviewers.

• LONG PAPER submissions should report on substantial contributions of lasting value. The maximum length is 8 pages (including figures, tables, appendices and acknowledgements). Reference pages do not count towards the 8 page limit. Each accepted long paper will be included in the conference proceedings and presented in the form of a talk or poster as part of the main conference program. We expect the review process to be highly selective: the acceptance rates for full papers in the past three years were 20-24%.
• SHORT PAPER submissions are for contributions that can be described completely and rigorously within a smaller page limit. The maximum length is 4 pages for all the technical content, with additional pages for references allowed. Each accepted short paper will be included in the conference proceedings and presented in the form of a talk or poster as part of the main conference.
• PAST, PRESENT, AND FUTURE PAPER submissions celebrate the innovation and growth of the community, put forward innovative future applications, or provide material that helps set a future research agenda for the Recommender System community. To mark the twentieth year of the RecSys Conference, this track encourages papers that consider a broad perspective on how the field has evolved and the challenges and directions that lay ahead. We encourage position papers, both qualitative and quantitative historical analyses, reflections on persistent or fleeting trends in the field, and blue sky future agendas for recommender research. The maximum length is 4 pages for all the technical content, with additional pages allowed for references. Each accepted Past, Present, Future paper will be included in the conference proceedings and presented in the form of a talk or poster as part of the main conference.

A recorded video presentation of each accepted submission should be submitted within one week after the camera-ready deadline. Recorded video presentations will be disseminated through the ACM Digital Library and other ACM Channels.

Submissions must be anonymous and should be submitted as a PDF electronically via EasyChair by selecting the “RecSys 2026 Main Track” (See Submission link).

The review of manuscripts will follow a mutually anonymous review process, and submissions not properly anonymized will be desk-rejected without review.

Relevant Areas & Topics

• Foundations of recommender systems
• Human-centered and interactive recommendation
• Explainability, transparency, and user control in recommender systems
• Fairness, safety, diversity, bias-mitigation, and societal impact of recommender systems
• Legal and ethical aspects of recommender systems
• Sustainable and eco-aware recommender systems
• Recommenders for multi-stakeholder, cross-domain, and multimodal contexts
• Generative, agentic, and reasoning-based recommendation
• Conversational, knowledge-based, and context-aware recommenders
• Recommendation evaluation methodologies and metrics beyond accuracy
• Recommender systems data, reproducibility, and benchmarking resources
• Real-world applications, case studies, and deployment insights of recommenders

REVIEW PROCESS

RecSys follows a mutually anonymous review process. Papers will be reviewed by at least three members of the Program Committee and overseen by a Senior PC member, who will assess submissions based on their relevance, originality, rigor, and the impact of their contribution to the field. Reviewers are also asked to consider the replicability of reported research. Papers that are out of scope, incomplete, or lack sufficient evidence to support their main claims may be rejected without a full review. (See Desk Rejection policy.)

After the review phase and before acceptance decisions, reviews will be shared with the authors and authors will be provided the opportunity to submit a short anonymous rebuttal (500 characters), the sole purpose of which is to indicate any factual errors or misconceptions in reviews. Rebuttals should not include any revision suggestions, new material or responses to the reviews, and doing so will disqualify the rebuttal from being included in the review discussion. Further information will be provided along with the reviews.

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Main track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Author Anonymity
• Pre-Print Policy
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement
• ACM’s New Open Access Publishing Model

PROGRAM CHAIRS

For CFP-related questions, please reach out to the RecSys 2026 Program Chairs: .

Call for Reproducibility Papers

The reproducibility of empirical results is a cornerstone of scientific research and a prerequisite to ensure continuous progress in our field. ACM RecSys 2026 therefore strongly encourages submissions that replicate or analyze prior works in similar or alternative settings or contribute to an increased level of reproducibility in the future.

TYPES OF CONTRIBUTIONS

We encourage the submission of different types of papers, including:

• Reproducibility and Replicability papers, that analyze prior works in different contexts, such as across different domains, using different datasets, or comparing against alternative baselines.
• Resource papers that lay the foundation for future reproducibility, for example, by introducing new datasets or open-source software frameworks for evaluating recommender systems.

Note that two paper classes accepted last year — methodology and reflective works — are no longer included. Papers whose primary contribution is methodological should be submitted as research papers to the main track. If you are unsure whether your work fits the reproducibility track, please contact the track chairs in advance at .

IN BRIEF

• Submissions will be handled electronically via EasyChair.
• Submissions of reproducibility papers must be anonymous; resource paper submissions are not anonymous and should include author names.
• Submissions will be reviewed by at least three members of the Program Committee and overseen by a Senior PC member.
• At the time of submission, information for all authors and authorship order must be established — no changes will be allowed after the review process begins. Moreover, authors must declare conflicts of interest with PC and SPC members before submitting the paper. Failure to declare COI can result in desk-rejection.
• RecSys 2026 prohibits dual submissions, which means submitted manuscripts must not be under review at another publication venue, including other RecSys 2026 tracks.
• Contributions must be self-contained, within the number of pages allowed for paper type.
• The paper must include all the relevant artifacts (source code, data, etc.), installation instructions, and documentation of hardware configurations on which the artifacts were successfully tested. These artifacts and documents must be available to the reviewers and meet the anonymity requirements. Resource paper submissions must describe resources already publicly available, and provide a link to the public distribution. Failure to provide the relevant artifacts will result in desk rejection. Incomplete or non-executable artifacts will negatively affect the peer review outcome.
• Contributions will be reviewed based on their relevance to the RecSys community, scientific rigor (including responsible research practices), and likely impact.

IMPORTANT DATES

• Abstract submission deadline: April 28, 2026
• Paper submission deadline: May 5, 2026
• Author Notification: July 9, 2026
• Camera-ready version deadline: July 27, 2026

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone.

During the review period, the track chairs may contact corresponding authors with technical questions raised during artifact review. Authors should look for these e-mails and respond promptly.

SUBMISSION GUIDELINES

Submitted contributions should focus on the original and significant work conducted by the authors (i.e., reproducibility and replication papers should primarily focus on the reproducibility or replication study conducted, not on reiterating what was published in the work being reproduced or replicated; resource papers should discuss the new work of the authors creating the resource). Prior work should be cited, but in general large excerpts of prior work should not be included in your submission.

All submissions must be in ACM’s double-column format as specified in the common submission requirements. Further specific requirements and evaluation criteria differ by paper type. Note that appendices are included in the page limit, and the length of a submission should be appropriate to the significance of its contribution.

At the time of submission, all relevant materials (artifacts) necessary to fully assess the validity of the work, including source code, data, and installation instructions required to reproduce the reported experiments, must be available to the reviewers under reasonably liberal terms and be sufficiently well-documented. If execution of the artifacts depends on specialized hardware or other computing resources, these requirements must be clearly documented, and we strongly encourage authors to make their artifacts partially executable and reproducible in widely-available environments (i.e., common CPU and GPU configurations).

Each accepted paper will be included in the conference proceedings, and will be scheduled for either poster or oral presentation (format to be determined by the chairs) as part of the main conference program. We encourage authors to create a companion website that hosts all relevant material.

Reproducibility and Replicability Papers

Reproducibility and Replicability papers are up to 8 pages (plus up to 2 additional pages for references), and describe reproduction, replication, and/or re-analysis of prior work. Papers must go beyond merely re-running a previous experiment to yield new knowledge about the prior work’s applicability, generalizability, comparison with respect to alternative baselines, performance on additional evaluation designs, or other extensions and reflections that use the process of reproduction or replication to contribute new scientific insights.

Submissions from the original authors of the reproduced experiments will not be accepted. As noted above, all relevant materials and artifacts must be available; providing non-executable or poorly documented artifacts will negatively impact the peer review outcome, and failure to provide the required materials will result in desk rejection. During the rebuttal phase, authors will have the opportunity to respond to reviewers’ requests for clarifications regarding the artifacts.

To promote a fair evaluation of new algorithms and approaches with state-of-the-art baselines and allow other researchers to reproduce the results presented in RecSys papers, we suggest the authors refer to one of the frameworks listed in https://github.com/ACMRecSys/recsys-evaluation-frameworks. Note however that the correctness of third-party implementations should not be taken for granted. As for the datasets to use in experimental evaluations, authors may refer to the repositories available at https://github.com/ACMRecSys/recsys-datasets.

The peer review process for reproducibility papers is mutually anonymous. This means that neither the submitted paper nor the paper artifacts (source code, data etc.) can include information identifying the authors or their organization. Specifically, do not include the authors’ names and affiliations, refer to your previous work in the third person (e.g., “Musto and Ferrari Dacrema (2025) recommended that RecSys submissions be anonymized by referring to the authors’ prior work in the third person.”), and avoid providing any other information that would allow reviewers to identify the authors, such as acknowledgments of individuals and funding sources. However, it is acceptable to explicitly refer in the paper to the companies or organizations that provided datasets, hosted experiments or deployed solutions if there is no implication that the authors are currently affiliated with the mentioned organization. Reviewers are instructed not to search for tech reports, pre-prints, and other information about your research. Your responsibility is focused on making sure that the paper submission itself does not reveal your identity as the author.

To provide all relevant materials that are needed to fully assess the validity of the submission and keep the anonymity of their submission, the authors may refer to https://anonymous.4open.science/.

Each paper will be reviewed by members of the program committee of the track. The review criteria, among others, will include the following specific aspects:

• Novelty: What is new about the reported findings or insights? If the paper reiterates previous findings, what is new about the analysis or arguments, and are the conclusions relevant to the research practices currently adopted by the community?
• Impact: What is the expected impact of the reported findings or insights?
• Rigor: Is the work technically sound? Are the choices made justified?
• Artifacts Availability: Is the submitted work repeatable? Are the artifacts well-documented, consistent with the paper and executable?

Resource Papers

Resource papers are up to 4 pages (not including references), and describe a new resource for the recommender systems community to advance reproducible research. Resources may be data sets, software packages, community-accessible infrastructure, evaluation instruments (e.g., libraries of validated survey scales), or other resources that support recommender systems research, development, and/or education.

Resources must be already available in publicly-accessible form, with sufficient documentation, public code, etc. to enable them to be used. Submissions must include a reference or link to the public-facing site hosting the resource; if elements of resources require registration (e.g., datasets with permissive licensing but requiring explicit license acknowledgement), the submission must also contain a link to a shared folder or repository accessible to the reviewers where they can obtain a copy of the protected materials for the purpose of peer review. Due to the public availability requirement, resource papers are not required to be anonymous, so the resource paper peer review process is single-anonymous. This means that submissions should include identifying information about the authors and their organization. Additionally, there is no need to anonymize the paper artifacts, such as code, notebooks, datasets, or any other external resources.

Authors must ensure continued and minimally-restricted access to the resource both during the review process and afterward by citing it at a permanent location. For example, datasets should be available in repositories such as FigShare, Zenodo, Datorium, Dataverse, or other dataset-sharing services or domain-specific repositories. Similarly, software code should be hosted in a public repository such as GitHub, Bitbucket, or an institutional open data repository.

The purpose of the public availability requirements above is that a resource paper should describe a resource that exists, not only a resource that is promised to exist, and so that reviewers can examine the documentation and artifacts as they are made available to the public. The paper itself should be self-contained, so that readers can understand the resource and its potential use cases and assess its applicability to their research, but technical details (such as API documentation and database schemas) can be placed in the public site. Due to the prohibition on dual submission, the resource should not yet be described in a peer-reviewed publication (with the exception of very brief descriptions in methods sections of papers using the resource before it was submitted for resource paper publication).

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Reproducibility track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Author Anonymity (except for Resource papers)
• Pre-Print Policy (except for Resource papers)
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement
• ACM’s New Open Access Publishing Model

REPRODUCIBILITY CHAIRS

• Ludovico Boratto, University of Cagliari, Italy
• Michael Ekstrand, Drexel University, USA

E-mail:

Call for Industry Contributions

The 20th ACM Conference on Recommender Systems (RecSys 2026), the leading conference for research on the foundations and applications of recommendation technologies, will take place from September 28 to October 2nd, 2026, in Minneapolis, Minnesota, USA.

Industry practitioners are invited to submit contributions to the RecSys 2026 Industry Track, to be included in the proceedings as an industry paper. The industry track is focused on challenges and practical solutions to significant real-world issues faced by industry practitioners. We encourage submissions that describe substantial real-world challenges and novel deployed systems that power recommendations in commercial settings. This includes design and interaction aspects of recommender systems. We also recognize that diverse speaker backgrounds and topics facilitate richer discussions at the conference; therefore we especially encourage colleagues from backgrounds that are under-represented in the conference series to submit their work. Please note that industry contributions are independent of sponsorship and are selected from the present call for submissions by a single-blind review process.

All submissions will be reviewed for relevance to real-world challenges, novelty, and contribution to the community. Shared data sets and code are encouraged, as are insights into quantitative and/or qualitative evaluation results. However, industry-track submissions can focus on real, commercial data and proprietary results, and, as such, the level of detail and evaluation is not required but encouraged considering the reduced reproducibility requirements when compared to the main research track. Real-world impact and ethical considerations of the systems described will also be taken into account. Note that proposals consisting of sales pitches for products will not be considered.

Examples of submissions to the Industry Track include, but are not limited to:

• Lessons learned from real-world deployment of recommender systems, including case studies, retrospectives, and user studies.
• Challenges faced by practitioners that are under-studied in the research community or novel to particular recommendation applications.
• Societal impact, fairness, bias, diversity, and inclusion in real-world recommender systems.
• Design and human interaction aspects of recommender systems.
• User control, transparency, and explainability mechanisms evaluated in real-world systems.
• Conversational and natural-language recommender systems, including multi-turn and mixed-initiative interactions in real-world recommenders.
• Generative recommender systems.
• LLM applications in recommendation and personalization tasks.
• Multimodal recommender systems combining text, images, audio, and video in production.
• Novel recommender system applications.
• Novel techniques that solve significant issues in real world settings such as scalability, performance, and reliability at production scale.
• Holistic overviews or component deep dives of recommender system pipelines, including ETL, candidate generation, research and production training, feature stores, and inference.
• Privacy- and security-preserving recommender systems in production (e.g., differential privacy, federated learning, adversarial learning for attack/defense).
• Online and offline metrics used to evaluate recommender systems in their interaction in production settings.
• Novel evaluation metrics beyond accuracy and their relationship to real-world outcomes.

Authors of the selected contributions will be invited to present a poster at the conference poster sessions, and selected contributions might be invited to give an oral presentation. Each accepted contribution will be included in the conference proceedings.

Papers must describe original work that has not been previously published, not accepted for publication elsewhere, and not simultaneously submitted or currently under review in another journal or conference, including the other tracks of RecSys 2026. See this brief checklist to strengthen a RecSys paper, for authors and reviewers.

Submissions should report on substantial contributions of lasting value. The length is 4-8 pages (including figures, tables, appendices, bios, and acknowledgements). Reference pages do not count towards the limit of 8 pages. Each accepted paper will be included in the conference proceedings and presented in the form of a talk or poster as part of the main conference program.

IMPORTANT DATES

• Submission open: March 2, 2026
• Paper due: May 21, 2026
• Paper notifications: July 9, 2026
• Camera-ready due: July 27, 2026 (strict)

All submissions and reviews will be handled electronically via EasyChair. Deadlines refer to 23:59 (11:59 pm) in the AoE (Anywhere on Earth) time zone.

FORMATTING

ACM’s archival publication format separates content from presentation in the Digital Library to enhance accessibility and improve the flexibility and resiliency of our publications. Following the ACM publication workflow, all authors should submit contributions for review in a double-column format. Please note that the page limit and format requirements are strict. No complying submissions will be desk-rejected.

Authors can also submit auxiliary material to enhance reproducibility (e.g., experiment details, proof details), but contributions must be self-contained, and reviewers are not required to review the auxiliary material. The quality of the contribution should be at the main track level minus the limitations due to the nature of the industrial track (e.g., difficulties in sharing proprietary datasets or business metrics).

ANONYMITY

Contributions are not anonymous. Please include information identifying the authors and their organization.

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Industry track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement
• ACM’s New Open Access Publishing Model

INDUSTRY CHAIRS

• Arnie Bhadury, Google, Canada
• Felice Antonio Merra, Cognism, United Kingdom
• Zhenhua Dong, Huawei, China

E-mail:

Call for Research&Practice Notes

As a new track, we are pleased to invite you to contribute to the 20th ACM Conference on Recommender Systems (RecSys 2026). Research and Practice Notes should present innovative ideas that are still in development and have shown promising preliminary results. This track also serves as a platform for disseminating new research directions. In contrast, mature studies with fully validated experimental results are better suited for the general call, either as long or short papers. Therefore, papers rejected from the main track are not suitable as Research and Practice Notes submissions.

The Research and Practice Notes track of RecSys offers an opportunity to share smaller-scale work or work still in progress in a form that does not preclude future publication. They are different from long, short, and research papers in that they do not need to be complete works – they simply need to represent relevant and interesting work within the scope of the conference. The topics listed in the main-track call for papers serve as a reference, but we also encourage submissions with clear relevance to recommender systems that extend this list.

Accepted contributions for this track will be presented as posters, where the informal setting encourages presenters and participants to engage in lively discussions about the presented work. All accepted contributions will be published by ACM. We note that according to the ACM’s New Open Access Publishing Model, Research and Practice Notes are published as extended abstracts, and as a result, the ACM Open article processing charges do not apply.

Each accepted contribution is expected to be presented in person. At least one author from each accepted submission must attend the conference in person to present and discuss their work at the conference poster session. Remote presentations or videos will not be permitted for accepted contributions.

IMPORTANT DATES

• Submission: July 15, 2026
• Notification: August 10, 2026
• Camera Ready: August 17, 2026

Deadlines refer to 23:59 (11:59 pm) in the AoE (Anywhere on Earth) time zone.

SUBMISSION GUIDELINES

The maximum length is 2 pages plus an additional page that may include only references, tables, and figures in the double-column format. Submissions must be anonymous and should be submitted as a PDF electronically via EasyChair by selecting the “RecSys 2026 Research and Practice Notes” track.

The reviewing process will be mutually anonymous. The submissions must not include any information that identifies the authors or their institutions.

GENERAL POLICIES

In addition to these guidelines, the following RecSys 2026 general policies apply to the R&P Notes track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Author Anonymity
• Pre-Print Policy
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement

RESEARCH AND PRACTICE NOTES CHAIRS

• Adir Solomon, University of Haifa, Israel
• Ruixuan Sun (Sophia), University of Minnesota, USA

E-mail:

Call for Doctoral Symposium Submissions

The ACM RecSys 2026 Doctoral Symposium provides an opportunity for doctoral students to explore and develop their research ideas and interests under the guidance of distinguished researchers from both academia and industry. Students who feel that they would benefit from this kind of feedback on their work are invited to apply for this unique opportunity, which allows them to share their work with peers and senior researchers in the field.

The strongest candidates will be those who have already made some research progress, but still have the flexibility to adjust their research plans. Typically, this means they have reviewed the state-of-the-art, defined their topic and completed some research. However, they still have at least a year of research remaining before completing their dissertation (in many universities this corresponds to the dissertation proposal stage). Feedback from previous attendees has been very positive, and the Doctoral Symposium has been considered useful for providing research guidance.

The symposium has the following objectives:

• Provide a supportive setting for feedback on students’ current research and guidance on future research directions.
• Offer each student feedback and fresh perspectives on their work from faculty and students outside their existing peer groups.
• Promote the development of a supportive community of researchers and a spirit of collaborative research.
• Contribute to the conference goals through interaction with other researchers and conference events.

Student participants will have their extended abstracts included in the conference proceedings. They will also present a poster of their work at the conference.

SYMPOSIUM FORMAT AND PARTICIPATION EXPECTATIONS

The RecSys 2026 doctoral symposium is intended to be an in-person experience and participants are expected to physically attend the entire symposium scheduled ahead of the main conference on September 27, 2026, and are also expected to attend the RecSys 2026 conference which will be held from September 28 to October 2nd, 2026, in Minneapolis, Minnesota, USA.

We strongly encourage in-person attendance. Students are expected to attend in-person and they will have space during one of the poster sessions for a poster presenting their work in order to get valuable feedback from the RecSys audience in addition to the good networking opportunities.

The format of the symposium will be primarily student presentations and Q&A opportunities with senior researchers in the field. The specific format details will be designed to provide maximum feedback to students. Being accepted into the symposium is an honor, and involves a commitment to both giving and receiving thoughtful commentary with an eye towards shaping the field and upcoming participants in the research area.

IMPORTANT DATES

• Doctoral Symposium submission deadline: June 09, 2026
• Doctoral Symposium submission notification: July 09, 2026
• Deadline for the camera-ready version of the extended abstract: July 27, 2026

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone.

SUBMISSION GUIDELINES

Applications are invited from graduate students pursuing a PhD project who would benefit from detailed workshop discussions of their doctoral research by a panel of established researchers. All submissions and reviews will be handled electronically.

Applications should include the following:

• A one-paragraph statement of expected benefits of participation, including questions regarding your dissertation that you would like to ask your symposium mentors. This can either be the first section of your extended abstract or a separate page before the extended abstract, and should also state your current stage in your PhD.
• An extended abstract (see below).
• A curriculum vitae or resumé.
• A brief letter of recommendation from your doctoral advisor, focused on how your participation in the Doctoral Symposium will benefit your dissertation research.

Here are some Doctoral Symposium outlines to use while preparing your submission.

Submit these four items in a single PDF file to EasyChair by 23:59, AoE (Anywhere on Earth) on June 09, 2026 by selecting the “RecSys 2026 Doctoral Symposium” track.

The maximum length for extended abstracts is 5 pages (plus up to 2 pages of references) in the double-column format.

Please write your extended abstract to the same quality standards as a regular RecSys submission. The extended abstract must explain the doctoral work clearly. Please carefully read the selection criteria section below which states the important aspects that you should pay attention to.

CONFIDENTIALITY

Confidentiality of submissions is maintained during the review process, where only the DS Chairs will have access to the submissions. All rejected submissions will be kept confidential in perpetuity. Submissions should contain no information or materials that are proprietary at the publication time.

SELECTION CRITERIA

Your extended abstract will be evaluated by the DS Chairs with regard to:

• Originality of the work with respect to current concepts and techniques (provide relevant citations).
• Importance of the work with respect to fundamental issues in recommender systems (clearly identify the problems you are trying to solve).
• Rigor and validity of claims, argumentation, methodology, results, and interpretations.
• Clarity and persuasiveness of expression.

To provide maximum feedback to each student, participation in the Doctoral Symposium is limited. Selection is based on two broad criteria:

Value of the symposium to the student:

• The degree to which the applicant is positioned to benefit from participation, including the student’s position in the doctoral process (the greatest benefit is for students with a developed research idea but much of the work yet undone).
• The degree to which the student may otherwise lack access to a diverse set of feedback and input on his or her research plans (e.g., availability of local experts and advisors).

Value of the student’s participation to other students:

• The quality of the extended abstract (as identified above), both as a model of excellent research and as an indication of the student’s potential in the field.
• Diversity of participation, including diversity by institution, country, research topic and approach, and demographics. In general, we will limit participation to one or two students per institution, depending on the number of applicants.
• Evidence that the student will be an effective and active participant, providing feedback to others and helping to build a research network (such as, e.g., prior experience in meetings, workshops, etc., or any feedback the advisor may provide on this).

APPLICATION CHECKLIST

Well in advance of the deadline:

1. Write an extended abstract according to the formatting instructions above. The maximum length for extended abstracts is 5 pages (+ up to 2 pages of references) in the double-column format. Note that the student is the sole author of the abstract. Advisor(s) can be thanked in the acknowledgments.
2. Write a curriculum vitae.
3. Write a one-paragraph statement of the expected benefits of participation.
4. Obtain a letter of recommendation from your advisor.

By the deadline (June 09, 2026, 23:59 AoE): Submit items 1- 4 above in a single PDF file to EasyChair.

SUPPORT

The chairs are working on identifying the specific support mechanisms for RecSys 2026 doctoral symposium students, further details will be posted here as available.

We very strongly advise students to also apply for a spot as a student volunteer (SV). Student volunteers will receive free registration to RecSys 2026. Students accepted for the Doctoral Symposium will be prioritized for a student volunteer spot. The deadline for SV applications is planned to be after the notifications for the Doctoral Symposium.

For travel support, students can also apply for Gary Marsden Travel Awards (GMTA) established by SIGCHI to get support for attending the conference. See https://sigchi.org/resources/gary-marsden-travel-awards/ for detailed information. You can apply even before having an accepted submission (Still, GMTA “will prioritize first-time attendees and presenters”). Thus, we suggest applying no later than July.

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Doctoral Symposium submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement

DOCTORAL SYMPOSIUM CHAIRS

• Alexander Tuzhilin, New York University (NYU)
• Xia Ning, The Ohio State University
• Markus Zanker, Free University of Bozen-Bolzano and University of Klagenfurt

E-mail:

Call for Workshop Proposals

The ACM RecSys 2026 Workshops provide a dedicated forum for the research and practitioner communities from both academia and industry to exchange ideas, frame emerging problems, and share early results related to recommender systems. Workshops offer an opportunity to explore focused topics in depth, stimulate discussion, and foster collaboration across disciplinary and methodological boundaries.

We are pleased to invite proposals for workshops to be held in conjunction with the 20th ACM Conference on Recommender Systems, taking place in Minneapolis, Minnesota, USA, from September 28 to October 2, 2026, with workshops scheduled on the first and last day of the conference. The goal of the workshops is to provide additional venues for discussing novel ideas as well as recent results of research in progress. We encourage the community to propose workshops that explore newly emerging, currently evolving, as well as historically understudied topics, and that adopt diverse and engaging workshop formats. We actively encourage both academia researchers and industry practitioners to submit proposals. Different full-day and half-day workshop formats are possible, for example:

• Workshops with novel interactive formats and a relatively small number of participants. Such workshop formats might for example target the exploration of a certain topic during the workshop through a moderated discussion, resulting in a draft paper or report to be completed and published after the workshop. Or they might focus on datasets and benchmarking for a particular problem or domain. Particular priority will be given to these formats which require the active involvement of the participants.
• Workshops with the traditional workshop format on specialized topics. Such workshops typically have their own paper submission and review processes. Proposals for the continuation of an existing workshop series are welcome. However, please include a brief statement on the necessity for the new edition, including a description of the outcomes of previous years and the expected novelty of this edition.

IMPORTANT DATES

• Workshop proposal submission deadline: March 10, 2026
• Workshop proposal notification: April 3, 2026
• Camera-ready workshop summary deadline: July 20, 2026

Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone. Please submit your proposal to EasyChair.

SUBMISSION GUIDELINES

The submission and review process for workshop proposals will be handled electronically. Workshop proposals must be submitted to EasyChair by 23:59, AoE (Anywhere on Earth) on March 10, 2026. The maximum length of a workshop proposal is 4 pages (excluding references). Authors are asked to use the official workshop proposal template, available here, to prepare their submissions. The template provides detailed guidelines and tips to ensure that all required information is included. Any inquiries may be directed to .

EVALUATION CRITERIA

Workshop proposals will be evaluated based on:

• Contribution to the field. The potential of the topic to advance the continued development of recommender systems research and practice.
• Complementarity to the main conference. The extent to which the topic complements the RecSys main conference, with a clear articulation of its relevance to the conference scope and the specific workshop objectives.
• Quality and feasibility of the organization plan. A clear and realistic plan for attracting high-quality submissions, ensuring an engaging and productive workshop, and disseminating the outcomes. Proposals should provide evidence that this plan is likely to succeed.
• Organizer expertise. The experience, diversity, and suitability of the organizing team to deliver a successful workshop.

After acceptance notification, organizers of accepted workshops are expected to (a) provide a link of their workshop website containing information about aims and scope, topics, their important dates, their paper submission instructions (if any), the committees, contacts, and so on, (b) be responsible for their own publicity, (c) write a short workshop summary to be included in the conference proceedings, (d) to be in contact with the organization of the conference, in particular, workshop chairs, and (e) chair the workshop at the conference.

WORKSHOP SUMMARY

The organizers of accepted workshops will be invited to write a 2-page camera-ready summary of the workshop (+1 page for references). Workshop summaries will later (see “Important dates” section) be submitted to ACM’s production platform where authors will be able to review PDF and HTML output formats before publication.

Note: Workshop Summaries are published as abstracts, and as a result the ACM Open article processing charges do not apply. All organizers are expected to register for the conference, and at least two organizers must attend in-person to manage the workshop.

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Workshop track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Use of AI Policy
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement

WORKSHOP CHAIRS

• Li Chen, Hong Kong Baptist University, Hong Kong, China
• Moshe Unger, Tel Aviv University, Israel
• Bart Knijnenburg, Clemson University, USA

E-mail:

Call for Tutorial Proposals

We invite proposals for tutorials to be given in conjunction with the conference. The goal of the tutorials is to provide conference attendees, including early-career researchers, researchers transitioning from related disciplines, and industry practitioners, with an opportunity to learn about recommender systems concepts and techniques through tutorials ranging from introductory to advanced, given by experts in the field. Tutorials also serve as a venue to share instructors’ expertise with the global community of recommender systems researchers and practitioners. Each tutorial will provide in-depth coverage of an established recommender systems subtopic, introduce an emerging application of recommendation technologies, or update attendees on recent advances in related fields.

This year, we aim to place stronger emphasis on recommender systems as systems. We welcome tutorials that consider all aspects of the recommendation setting, addressing application and problem characteristics such as interaction dynamics, feedback loops, evaluation, deployment constraints, and real‑world trade‑offs alongside algorithmic considerations. Strong proposals should go beyond surveys of recent work by providing conceptual frameworks, methodological guidance, and practical instructions for solving recommendation problems and working in specific domains.

Tutorials focus on specific topics including, but not limited to:

• Building and deploying recommender systems in specific domains (e.g., commerce, music, tourism, education, TV/video, jobs, enterprise, health, fashion, e-government, smart cities, energy, wellness, etc.), as well as cross-domain recommendation;
• End-to-end business value of recommender systems, measuring incremental impact and ROI beyond engagement (e.g., profit vs customer lifetime value, retention, cost-to-serve);
• Sustainable recommender systems, how to minimize energy use and carbon footprint across training and deployment;
• Introductions to specific recommender systems techniques (e.g., deep learning, LLM-based models, feature engineering, graph models, reinforcement learning, conversational recommender systems, intelligent interactive recommendation, large-scale recommender systems, stream-based recommendation, etc.);
• Evaluation of recommender systems (e.g., multi-modal evaluation, system-centric and user-centric evaluation, experimentation, LLM-based evaluation, etc.);
• Using different types of data (semantic web, graphs) and media (e.g., text, images, video, speech) for building recommendations;
• Intersections of recommender systems with other domains (e.g., generative models, information retrieval, machine learning, human-computer interaction, databases, economics, psychology, etc);
• Designing user experiences and interactions with systems offering recommendations and intelligent interaction (e.g., virtual assistants, chatbots, robots, etc.);
• Eliciting and learning user preferences through interactions (e.g., clicks, conversations, multi-source personalization);
• User interfaces and user experience of recommender systems;
• Affective recommender systems that take into account users’ emotional state, physical state, personality, trust, level of expertise, and/or cognitive readiness;
• User modeling elicitation, creation, and update; hybrid AI models combining symbolic and sub-symbolic AI for recommender systems;
• Persuasive recommender systems, able to foster some behavior change in people;
• Recommendation for groups, tasks, or situations;
• Recommender systems supporting complex decision-making;
• Context-aware (including location-based) recommender systems;
• Social, ethical, and legal aspects of recommender systems (e.g., privacy, fairness, accountability, transparency, control of bias, long-term and social impacts, etc.).

The length of your proposed tutorial should be commensurate with the materials presented and the projected interest of the RecSys community in the topic. We encourage you to organize the schedule in blocks of 90 minutes, to allow for breaks, and suggest that a duration of around 3 hours should be appropriate for most tutorials. However, proposals for shorter tutorials are also welcome, as well as for longer ones, when the duration is appropriate for the topics covered. We may work with the instructors of accepted tutorials to adjust the duration as needed to fit available slots. Please be flexible, as we may not be able to accommodate your preferred date and time for the tutorial.

We actively encourage both researchers and industry practitioners to submit tutorial proposals that target different levels of expertise and different interests. We also encourage the submission of hands-on tutorials, for instance, through the use of notebooks that combine theoretical concepts with practical exercises. However, please be mindful of any technical requirements, for example, asking attendees to install large environments (e.g., packages, dependencies, containers/VMs) or download data locally could be problematic due to limited Wi-Fi bandwidth or policy restrictions on the company laptops some attendees will be using.

All co-authors submitting a tutorial proposal commit to attend the conference and present the tutorial in person. Since the peer-review process of the tutorial proposal will take into account the experience of the instructors, people who will not be actively involved in delivering the tutorial should not be listed as co-authors. We encourage the use of the Acknowledgements section to recognize any further relevant contribution. If any listed instructors do not register for in-person attendance by the camera-ready deadline or are unable to attend and deliver the tutorial in person, you must promptly inform the Tutorial Chairs so that we can discuss possible options. While we will work with you to find a suitable solution and accommodate unforeseen circumstances, if this is not possible the tutorial may need to be removed from the program.

If your tutorial proposal is accepted, you will be asked to submit a short tutorial abstract for the conference proceedings (detailed instructions will be provided) and to provide a link to the tutorial materials in a permanent online repository before the tutorial, so that they can be posted on the ACM RecSys 2026 website and serve as a resource to the community. The tutorial abstract will appear in the ACM Digital Library and must comply with ACM publication policies as described in the General Information. Since tutorials are published as abstracts, the new ACM Open article processing charges do not apply.

IMPORTANT DATES

• Tutorial proposal submission: April 28, 2026
• Tutorial proposal notification: May 13, 2026
• Tutorial camera-ready: July 20, 2026

SUBMISSION GUIDELINES

All submissions and reviews will be handled electronically. Tutorial proposals must be submitted to EasyChair by 23:59, AoE (Anywhere on Earth) on April 28, 2026, selecting the “Tutorial” track.

The tutorial proposal should be organized as follows:

• Tutorial title;
• Tutorial length;
• Motivation for proposing this tutorial (why it is important for RecSys);
• Name, email address, and affiliation of tutorial instructors (each listed instructor must present in person at the conference);
• Detailed bulleted outline of the tutorial (this point should take up the most space);
• Targeted audience (introductory, intermediate, advanced) and prerequisite knowledge or skills;
• Type of materials that will be provided to the attendees, logistical needs for the attendees (e.g., laptop for live coding), and for the instructors (e.g., audio-video setup);
• Teaching experiences and history of prior tutorials by the instructors, including links to publicly available tutorial materials. Instructors are encouraged to also provide, when available, sample slides, recordings, or other materials;
• List of relevant publications by the instructors;
• Main differences with tutorials on the same or similar topic in past RecSys editions or other conferences (please specify the year and provide a link). Note that a tutorial that was already given in recent years might be acceptable depending on the topic and on whether it was successful.

The submission should be up to 4 pages in the ACM two-column template, excluding references.

EVALUATION CRITERIA

Tutorial proposals will be reviewed according to:

1. The ability of the tutorial to contribute to strengthening the foundations of recommender systems research, or to broaden the field to look at important new challenges and techniques.
2. Experience and skill of the instructors;
3. The value and long-term accessibility of the materials released with the tutorial for the community.

TUTORIAL SUMMARY

The organizers of accepted tutorials will be invited to write a 2-page camera-ready summary of the tutorial (+1 page for references). Tutorial summaries will later (see “Important dates” section) be submitted to ACM’s production platform where authors will be able to review PDF and HTML output formats before publication.

Note: Tutorial Summaries are published as abstracts, and as a result the ACM Open article processing charges do not apply.

GENERAL POLICIES

The following RecSys 2026 general policies apply to the Tutorial track submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Use of AI Policy
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement

TUTORIAL CHAIRS

• Maurizio Ferrari Dacrema, Politecnico di Milano, Italy
• Kim Falk, DPG Media België, Belgium

Email:

Call for Demonstrations

We are pleased to invite you to contribute to the 20th ACM Conference on Recommender Systems (RecSys 2026) by submitting a demonstration to the Demo Track. Demonstrations present implementations of novel, interesting, and important recommender systems’ concepts or applications. Allowing potential users to see and use a demo of a research work makes them excited about it – it makes the work real and tangible. Demos also allow researchers from academia and developers from small start-ups to large industries to present new recommender ideas and get valuable feedback from the recommender systems community.

We welcome new demonstrations of recommendation technologies coming from diverse communities ranging from psychology to mathematics. In particular, we care as much about the human and economic impact of these systems as we care about their underlying algorithms. We also encourage authors to provide links to external materials in their reports, while ensuring anonymity during the review process.

RecSys has an excellent history of being well-attended by industry representatives – past conferences have had attendees and presenters from Netflix, Amazon, Booking, Google, Facebook, LinkedIn, Criteo, Pandora, Spotify, etc. The blend of industry and academic attention provides an excellent environment to demonstrate and discuss the latest inventions or ideas.

We invite demonstrations relevant to all aspects of recommender systems, including, but not limited to:

• Interaction techniques (preference elicitation interfaces, recommendation presentation, explanations, and more).
• Tools for development and analysis of recommender systems (design and analytics tools).
• Tools for evaluation (methods, frameworks, and metrics for assessing recommender systems).
• Innovative applications of recommender systems.
• Recommender user experiments.
• Recommender platforms.
• New code libraries for recommender systems.

Accepted demonstrations will be published as extended abstracts in the ACM RecSys 2026 conference proceedings. At least one author will be required to present a poster and a live demonstration of their work in person at the conference.

IMPORTANT DATES

Submission in the Demo track at RecSys’26 will not require the submission of an abstract.

• Submission: July 15, 2026
• Notification: August 10, 2026
• Camera Ready: August 17, 2026

Deadlines refer to 23:59 (11:59 pm) in the AoE (Anywhere on Earth) time zone.

SUBMISSION GUIDELINES

A demo submission should report on a description of the demo in both paper and link format for reviewers to assess the quality and innovation of the demo. The maximum length for the paper is 2 pages (plus up to 1 page of references and supplementary materials) in the double-column format. The link should include an accessible website link to the live system for reviewers to interact with. If it is not possible to provide a link to the system, the authors must explicitly state the reason and explain why the link cannot be made available. In all cases, a video recording of the demo is required. Due to the double-blind challenge for providing website or video links, both paper and link submissions DO NOT need to follow the mutually anonymous requirement.

Submissions should be submitted as a PDF electronically via EasyChair by selecting the “RecSys 2026 Demos” track.

GENERAL POLICIES

In addition to these guidelines, the following RecSys 2026 general policies apply to the Demo submissions:

• In-Person Attendance Policy
• Formatting Instructions
• Authorship Policy and Conflict of Interest
• Use of AI Policy
• Plagiarism Policy
• Ethical Review for Human-Subjects Research
• Desk Rejection Policy
• Publication Policy
• SIGCHI Submitter Agreement

DEMO CHAIRS

• Adir Solomon, University of Haifa, Israel
• Ruixuan Sun (Sophia), University of Minnesota, USA

E-mail:

SUBMISSION LINK

EasyChair submission link is coming soon!

IN-PERSON ATTENDANCE POLICY

RecSys 2026 is an in-person conference. All accepted papers to the main conference are expected to be presented in-person. At least one author from each accepted paper must register for and attend the conference in person to present the paper and address audience questions during the Q&A session. No pre-recorded videos will be permitted for presentations (though pre-recorded videos will be requested to post online with the paper for those who cannot attend in person). Papers that are not presented at the conference by an author may be removed from the proceedings at the discretion of the program chairs.

FORMATTING INSTRUCTIONS

ACM’s archival publication format separates content from presentation in the Digital Library to enhance accessibility and improve the flexibility and resiliency of our publications. All authors should submit manuscripts for review in a double-column format. Instructions for Word and LaTeX authors are given below.

• Microsoft Word: Write your paper using ACM’s interim template. Follow the embedded instructions to apply the paragraph styles to your various text elements. The text is in double-column format and no additional formatting is required at this stage.
• LaTeX: Please use the latest version of the Primary Article Template – LaTeX to create your submission. Start the document with the \documentclass[sigconf,anonymous]{acmart} command to generate the output in a double-column format. Please see the LaTeX documentation and ACM’s LaTeX best practices guide for further instructions, ignoring the single-column instructions. Do not use the “manuscript” option, otherwise the document will not be compiled in double-column, as required. Check the sample-sigconf.tex file included in the template package for a formatting example. To ensure 100% compatibility with The ACM Publishing System (TAPS), please restrict the use of packages to the whitelist of approved LaTeX packages.

Further instructions for camera-ready submission will be provided to authors of accepted contributions

Authors are strongly encouraged to provide “alt text” (alternative text) for floats (images, tables, etc.) in their content so that readers with disabilities can be given descriptive information for these floats that are important to the work. The descriptive text will be displayed in place of a float if the float cannot be loaded. This benefits the author as well as it broadens the reader base for the author’s work. Moreover, the alt text provides in-depth float descriptions to search engine crawlers, which helps to properly index these floats. Please check your template’s documentation for instructions on how to use “alt text”. Additionally, authors should follow the ACM Accessibility Recommendations for Publishing in Color and SIG ACCESS guidelines on describing figures.

Should you have any questions or issues going through the instructions above, please contact support at for both LaTeX and Microsoft Word inquiries.

Accepted papers will be later submitted to ACM’s new production platform where authors will be able to review PDF and HTML output formats before publication.

AUTHORSHIP POLICY & CONFLICT OF INTEREST

Authors are strongly encouraged to carefully review ACM’s authorship policy before submitting their papers. All authors must be listed in the correct order in EasyChair by the submission deadline. Moreover, they should adhere to the ACM Conflict of Interest policy. CoI refers to close personal relationships, continuing collaborations in the past 3 years (e.g., co-author on paper, joint grant), past or current advisor/advisee relationship, and employment at the same institution in the past 3 years.

The complete author list must be provided by the abstract submission deadline to assist reviewers in identifying potential conflicts of interest. Therefore, no changes to authorship will be allowed for any reason after the abstract submission deadline, and no updates will be permitted for camera-ready versions.

Please ensure that all authors obtain an ORCID ID, to complete the publishing process for accepted contributions, since as an ACM conference, we have committed to collecting ORCID IDs from all of our published authors. This helps improve author discoverability, ensure proper attribution and contribute to ongoing community efforts around name normalization.

AUTHOR ANONYMITY

Applies to: Main track (Long / Short / Past, Present, and Future papers), Reproducibility track (Reproducibility and Replicability papers only), R&P Notes track

The peer review process is mutually anonymous. This means that all submissions must not include any information that identifies the authors or their organizations. Specifically, authors should not include their names and affiliations and must refer to their previous work in the third person. For example, you could write, “Goethals, Chen and Willemsen (2026) stated that RecSys submissions should be anonymized, which can be accomplished by referring to the authors’ prior work in the third person.” It is also important to avoid providing any other information that could help reviewers identify the authors, such as acknowledgements of individuals and funding sources.

It is acceptable to explicitly mention the companies or organizations that provided datasets, hosted experiments, or deployed solutions, as long as there is no implication that the authors are currently affiliated with those organizations. Reviewers are instructed not to search for technical reports, pre-prints, or other information about your research. Therefore, it is the authors’ responsibility to ensure that the manuscript submitted does not reveal their identity as the authors.

PRE-PRINT POLICY

Applies to: Main track (Long / Short / Past, Present, and Future papers), Reproducibility track (Reproducibility and Replicability papers only), R&P Notes track

Please carefully consider pre-print constraints. Any violation of this policy could cause your paper to be desk-rejected.

1. An anonymous version of your RecSys submission can be submitted at any time to pre-print sites like arXiv.
2. Non-anonymized work having significant overlap with your RecSys submission, posted on any online archival platform before the submission deadline, must be disclosed in the EasyChair submission form. The title and abstract of the RecSys submission must be distinct from your previous version.
3. Any non-anonymized version of your RecSys paper cannot be submitted to pre-print sites during the review period.

USE of AI POLICY

Authors must follow the ACM Policy on the use of generative AI software tools. If a paper includes material generated by GenAI tools (such as text produced by large language models like ChatGPT), it is essential to disclose the extent and nature of this use in a section titled “Acknowledgments”. This allows reviewers to evaluate the overall rigor of the research methodology. However, the use of AI tools for editing and refining authors’ work—meaning tasks like grammar checks, word autocorrect, and other light editing—does not require disclosure. Authors who choose to utilize GenAI tools are fully responsible for any inaccuracies, biases, plagiarism, and other violations, just as if they had created the content themselves. Submissions that are primarily produced by GenAI without substantial contributions from the authors are prohibited and considered spam. Only humans are permitted to be authors of submitted papers.

For further details, refer to the ACM Policy on Authorship and the ACM Frequently Asked Questions.

PLAGIARISM POLICY

Plagiarism is a matter that as Program Chairs we take very seriously, thus, we check the plagiarism levels of all submitted papers to ensure content originality using an automated tool. If a contribution reuses non-original text from a previous publication (for example, the description of an algorithm or dataset), please ensure that the prior publication is cited as the source of that text.

For questions regarding reusing text or simultaneous submissions, please contact the program chairs at least one week before the submission deadline. For further details, refer to the ACM Publishing License Agreement and Authorship Policy. Papers violating any of the above guidelines are subject to rejection without review and cases may be referred to the ACM Publications Ethics and Plagiarism committee for further action where warranted.

ETHICAL REVIEW FOR HUMAN-SUBJECTS RESEARCH

ACM RecSys expects all authors to comply with ethical and regulatory guidelines associated with human subjects research, including ACM’s new Publications Policy on Research Involving Human Participants and Subjects. Papers reporting on such human subjects research must include a statement identifying any regulatory review the research is subject to (and identifying the form of approval provided), or explaining the lack of required review. Reviewers will be asked to consider whether the research was conducted in compliance with applicable ethical and regulatory guidelines.

DESK REJECTION POLICY

Submissions that do not meet the requirements for anonymity, length, or formatting; violate dual submission policy and/or any of ACM’s policies on use of AI or academic dishonesty—such as plagiarism, author misrepresentation, or falsification—may be rejected by the chairs without further consideration.

To finalize their submission, authors will be requested to declare conflicts of interest with PC and SPC members. Missing declarations might result in desk rejection.

Submissions that are clearly out of scope or have no meaningful relevance to the recommender system community may also be desk rejected without being sent for review.

The ACM Code of Ethics grants Program Chairs the authority to (desk) reject papers that perpetuate harmful stereotypes, employ unethical research practices, or uncritically present outcomes or implications that disadvantage marginalized communities. Additionally, reviewers will be explicitly asked to consider whether the research was conducted per professional ethical standards and applicable regulatory guidelines. Failure to adhere to these standards may result in a rejection. Some concrete examples of violations that may result in desk rejection are:

• Failures to declare conflicts of interest with PC or SPC members.
• Any other content after the maximum length of the submission.
• Wrong template or any attempt to format change to get around the page limit.
• Authors or their institutional affiliations are explicitly stated or easily discoverable.
• Links to source code repositories or datasets that reveal, explicitly or implicitly, the identity of one of the authors.
• Any change to the list of authors (both names and affiliations) after the abstract submission deadline.
• Double submission to another publication venue.

PUBLICATION POLICY

By submitting a manuscript to an ACM Publication, authors acknowledge that they are subject to all ACM Publications Policies. Alleged violations of this policy or any ACM Publications Policy will be investigated by ACM and may result in a full retraction of the manuscript paper, in addition to other potential penalties, as per ACM Publications Policy.

The official publication date is when the proceedings are made available in the ACM Digital Library. This date may be up to two weeks prior to the first day of the conference.

SIGCHI SUBMITTER AGREEMENT

By submitting your article to an ACM Publication, you are hereby acknowledging that you and your co-authors are subject to all ACM Publications Policies and Procedures, including ACM’s new Publications Policy on Research Involving Human Participants and Subjects. Alleged violations of this policy or any ACM Publications Policy will be investigated by ACM and may result in a full retraction of your paper, in addition to other potential penalties, as per ACM Publications Policy.

Please ensure that you and your co-authors obtain an ORCID ID, so you can complete the publishing process for your accepted paper. ACM has been involved in ORCID from the start and we have recently made a commitment to collect ORCID IDs from all of our published authors. The collection process has started and will roll out as a requirement throughout 2022. We are committed to improve author discoverability, ensure proper attribution and contribute to ongoing community efforts around name normalization; your ORCID ID will help in these efforts.

RecSys 2026 is a SIGCHI conference and making a submission to a SIGCHI conference is a serious matter. Submissions require time and effort by SIGCHI volunteers to organize and manage the reviewing process, and, if the submission is accepted, the publication and presentation process. Thus, anyone who submits to RecSys 2026 implicitly confirms the following statements:

1. I confirm that this submission is the work of myself and my co-authors and in compliance with the ACM Policy on Authorship all required declarations on the use of generative AI have been made.
2. I confirm that I or my co-authors hold copyright to the content, and have obtained appropriate permissions for any portions of the content that are copyrighted by others.
3. I confirm that any research reported in this submission involving human subjects has gone through the appropriate approval process at my institution.
4. I confirm that if this paper is accepted, I or one of my co-authors will present the paper at the conference in person. Papers that are not presented at the conference by an author may be removed from the proceedings at the discretion of the program chairs.

ACM’S NEW OPEN ACCESS PUBLISHING MODEL

Starting January 1, 2026, ACM will fully transition to Open Access. All ACM publications, including those from ACM-sponsored conferences, will be 100% Open Access. Authors will have two primary options for publishing Open Access articles with ACM: the ACM Open institutional model or by paying Article Processing Charges (APCs). With over 1,800 institutions already part of ACM Open, the majority of ACM-sponsored conference papers will not require APCs from authors or conferences (currently, around 70-75%).

Please note that APCs for Non ACM-Open Member Institutions apply only to Main Track, Reproducibility Track, and Industry Track submissions. All other categories publish abstracts that are open access without requiring membership or an APC.

Authors from institutions not participating in ACM Open will need to pay an APC to publish their papers, unless they qualify for a financial or discretionary waiver. To find out whether an APC applies to your article, please consult the list of participating institutions in ACM Open and review the APC Waivers and Discounts Policy. Keep in mind that waivers are rare and are granted based on specific criteria set by ACM. Understanding that this change could present financial challenges, ACM has approved a temporary subsidy for 2026 to ease the transition and allow more time for institutions to join ACM Open. The subsidy will offer:

• $250 APC for ACM/SIG members
• $350 for non-members

This represents a 65% discount, funded directly by ACM. Authors are encouraged to help advocate for their institutions to join ACM Open during this transition period.
This temporary subsidized pricing will apply to all conferences scheduled for 2026, including ACM RecSys 2026.