Fully-Automatic Track Submission
Participants submit results in CSV format (one file per task type) along with a paper via OpenReview, using any method to process pre-released queries.
Multimedia/CORE Unranked
CASTLE2026 2026
2nd CASTLE Grand Challenge
Nov 10 2026Official conference site Site reachable
The 2nd CASTLE Grand Challenge at ACM Multimedia 2026 in Rio de Janeiro, Brazil, focuses on analyzing egocentric video data from the CASTLE dataset through tasks in event detection, object search, and question answering. Participants can compete in either a fully-automatic track with pre-released queries or an interactive track evaluated live at the conference.
Key deadlines
Verified September 9, 2026Full paper
July 4, 2026
AoE
Conference timeline
Submission and decisions
Full paperKey deadline
July 4, 2026 · AoE
Paper fit
Contribution paths
A strong submission should clearly identify its contribution and evaluate it appropriately.
Interactive Track Submission
Participants solve tasks synchronously during a live hybrid session at ACM Multimedia 2026, submitting solutions via the Distributed Retrieval Evaluation Server API.
Research areas in scope
01
Tasks
Event Instance SearchObject Instance SearchQuestion Answering
Policies worth checking twice
- Submissions must be made via OpenReview for the fully-automatic track.
- Results for the fully-automatic track must be submitted in CSV format with three separate files (one per task type) in a ZIP archive.
- Each CSV file must follow a strict column structure specific to the task type (Event Instance Search, Object Instance Search, Question Answering).
- The interactive track requires live submission via the Distributed Retrieval Evaluation Server API during the conference.
- Queries are released in advance for the fully-automatic track but not for the interactive track.
Official sources
Compiled from the official call for papers. The organizers’ pages remain authoritative.
Last verified September 9, 2026