Registration

Register for RecSys 2025 through the registration portal.
In case of any questions or problems, please contact .

REGISTRATION OPTIONS

To participate in RecSys 2025, registration for the Main Conference is mandatory, and includes an evening reception at the restaurant Červený Jelen with food and drinks included. One ticket is included in your registration, with the option to purchase guest tickets on the registration site.

Registering for the Tutorials and Workshops is optional, however a conference registration is required. Tutorials and Workshops cannot be purchased separately. Prices are in EUR and include VAT.

In striving for a conference cost that is affordable for all, we have deeply discounted rates available for those registering in countries designated by ACM as “economically developing”. Countries in category H receive a discount of 60%, category I receive a discount of 75%.

Registration costs (in EURO)

 

	EARLY (ON / BEFORE AUG 20)	STANDARD (AUG 21 – SEPT 21)	ON-SITE (AFTER SEPT 21)
	Members1 / Non-members / Students2
Main Conference3	€750 / €900 / €300	€900 / €1050 / €350	€1000 / €1150 / €400
Main Conference + Tutorials/Workshops (in-person)3	€900 / €1150 / €400	€1100 / €1300 / €500	€1200 / €1400 / €550

¹Professional members of ACM, SIGCHI, SIGIR, SIGecom, SIGAI and SIGKDD qualify for this rate.
²See Student Policy below.
³For Category H, I registrations: rates through registration will be seen at the Category C rate. Please proceed through registration to the payment page. The payment page will show information on how to receive the Category H, I rate for RecSys 2025. Note that this discount only applies to ACM members.

AUTHOR POLICY

• Each accepted proceedings paper (main track papers, demos, late breaking results, reproducibility and industry tracks) must have at least one author registered by the camera-ready date for the corresponding contribution to be included in the proceedings.
• The same holds for contributions accepted for workshops and RecSys challenge. Each accepted workshop paper must have at least one author registered by September 11th.

In practice, this means that authors pay a single registration fee, regardless of the number of contributions accepted (e.g., if an author submits and gets accepted a long and a short paper, a single registration would fulfill the policy mentioned above).

STUDENT POLICY

Anyone registering at the student rate must be a student member of ACM. The ACM membership ID serves as a proof for being a student during the registration process. If you are not yet an ACM student member you can apply anytime for membership. A valid student ID willl be required on-site.

ACCOMMODATION & TRAVEL

For information with regards to accommodation and travel, please visit the RecSys 2025 location page.

ACM is able to provide visa support letters to attendees as well as authors with accepted papers, posters, or members of the conference committee. If you are a recipient of ACM, SIG, or Conference funded travel grant, please include this information in your request.

VISA REQUIREMENTS

Invitation letters for visa purposes can only be sent to participants who have completed the registration process. Further information regarding visa requirements can be found at https://supportletters.acm.org. If you have a specific question, contact .

For visa support letters, send a message to https://supportletters.acm.org including:

• Your name as it appears on your passport
• Your current postal mailing address
• Name of conference and registration confirmation number
• If you have any papers accepted for the conference, please provide the title and indicate whether you are the “sole author” or a “co-author”
• If there is no paper, speakers can provide the title of their presentation.

Please allow up to 10 days to receive your letter. Requests are processed in the order
that they are received.

PAYMENT POLICY

Registration fees must be paid in EUR by one of the following methods:

1. Credit or Debit Card (preferred option)

For credit or debit card payments, please use the On-line Payment System (available on June 16th). The system is accessible with the password that you received upon registration. The system accepts the following credit/debit cards: MasterCard/Eurocard and Visa.

2. Bank Transfer

The bank details including the 10-digit payment identifier will be automatically sent to your email address after submitting the on-line form. Please note that payments without this payment identifier will not be identified and the registration will not be confirmed.

Please note that bank transfer payments will only be accepted by 8 September 2025. After this date, only payments by credit/debit cards will be accepted using the On-line Payment System (available on June 16th).

All bank transfer amounts should be minus bank charges. Any banking fees accrued from the transfer is the responsibility of each party.

FINAL INVOICE

The final invoice will be sent automatically to your e-mail address within 14 days from the receipt of the payment.

CANCELLATIONS AND REFUNDS

The RecSys 2025 Secretariat must be notified in writing by e-mail at in the event of the cancellation of the registration. Cancellation by phone call will not be accepted. The appropriate refunds will be made after the conference.

The following cancellation conditions apply:

Cancellations received			Refund
From 2 months to 4 months before the conference			50% of the registration fee
2 months before the conference			no refund

If you change your registration, Recsys 2025 Secretariat reserves the right to charge a 30 EUR handling fee.

In case of conference cancellation due to force majeure, Recsys 2025 Secretariat reserves the right to charge a 30 EUR handling fee.

Name change
If you are prevented from attending, you will be allowed to send a co-author in your place. A handling fee of 30 EUR will be charged for each name change. Name changes should be reported in writing to the RecSys 2025 Secretariat at . No name change will be possible after 22 July.

ATTENDANCE SUPPORT, INCLUSION AND ACCESSIBILITY

As the organizers of RecSys 2025, we are committed to providing an inclusive, safe, and respectful conference environment for all attendees. Given the impact of our community’s work on society, we appreciate now more than ever the importance of providing an inclusive and accessible conference that brings together a diverse recommender systems community. For more information about the ways in which we support attendance, please review the RecSys 2025 Inclusion page.