To participate in the MMAC 2026 challenge and access the DIEM-A dataset, please complete the Registration Form, which includes an User License Agreement. The agreement must be signed by your team's Principal Investigator (PI). Once the registration is approved, participants will gain access to the training and test datasets.
All results and papers will be submitted through EasyChair (Link coming soon).
All manuscripts must follow the official ACII 2026 Author Guidelines. Short papers (max. 5 pages; 4 pages + 1 page for refs) are welcome but not obligatory.
Papers submitted to the MMAC challenge 2026 will be featured in the Challenge Workshop (7 Sept 2026), part of the official proceedings of the 14th International Conference on Affective Computing and Intelligent Interaction (ACII 2026).
Accepted papers will be published in the ACII 2026 Workshop Proceedings. At least one author must register for the workshop and present the paper in person or online.
Important Dates
Dataset release, 1 Apr 2026
Results & paper submission deadline, 30 May 2026
Paper desicion notification, 3 July 2026
Camera-ready deadline, 10 July 2026
Workshop date, 7 September, 2026
The time zone for the deadlines above is Anywhere on Earth (AOE).
Important Note on Data Access and Eligibility
The complete DIEM-A dataset is publicly available online, containing the answers for the test set. For this challenge, you must only apply for the Challenge Version via the registration form on this page. Any team found applying for or using the full dataset will be immediately disqualified.
Furthermore, if anyone on your team has previously received access to the full DIEM-A dataset, your team cannot compete. To maintain the integrity of the challenge, members of the Organizing Committee and their collaborators who have access to the hidden test set labels are not eligible to participate.