Introduction to the 9th Annual Lifelog Search Challenge, LSC'26
Ly-Duyen Tran, Werner Bailer, Duc‐Tien Dang‐Nguyen, Graham F. Healy, Steve E. Hodges, Björn Þór Jónsson, Wolfgang Hürst, Luca Rossetto, Klaus Schoeffmann, Minh–Triet Tran, Liting Zhou, Cathal G. Gurrin · 2026
The ACM Lifelog Search Challenge (LSC) is an annual comparative benchmarking exercise that brings together researchers in the field of multimedia retrieval to evaluate interactive search systems using a large-scale multimodal lifelog dataset. This paper presents an overview of the ninth edition of the challenge (LSC’26), held as a workshop during the ACM International Conference on Multimedia Retrieval (ICMR ’26) in Amsterdam. To broaden its scope, the workshop now features three submission tracks: the traditional Challenge Track for real-time search performance, a new General Lifelog Research Track for theoretical and architectural advancements, and an additional Open Source Track aimed at enhancing reproducibility and reducing barriers to entry for new participants.