NextMe-800: Anticipating Personal Behavior from Months of Egocentric Video

Abstract:We often plan ambitiously yet act habitually and wonder, in retrospect, whether we would have planned differently had we known what we would actually do. Hindsight offers a valuable perspective on past decisions, although we often wish we could have simulated hindsight at the moment of choosing. If a system could generate plausible trajectories from one's personal history, such previews might help people formulate more realistic plans and make better informed decisions. We introduce NextMe-800, an approximately 800-hour first-person dataset from one volunteer over 126 days with 1 Hz images, gaze, and audio, captioned at five hierarchical abstraction levels from atomic actions to major activities. We formulate personalized action anticipation as open-vocabulary K-step sequence prediction and construct NextAct, a 1,500-point benchmark combining NextMe-800 with the multi-person EgoLife dataset. Using an embedding-based soft edit distance as the metric, we evaluate how well different models can anticipate personal behavior across abstraction levels and prediction horizons. NextMe-800 and NextAct provide a months-long resource and evaluation framework for studying how far ahead personal behavior can be anticipated from egocentric observation.

24 pages, 7 figures. Dataset and benchmark: this https URL ; project page: this https URL

Artificial Intelligence (cs.AI)

arXiv:2610.01461 [cs.AI]

(or arXiv:2610.01461v1 [cs.AI] for this version)

https://doi.org/10.48550/arXiv.2610.01461 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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