Verify persistence of LeVLJEPA’s advantages at larger model and data scales
Establish whether the dense semantic feature advantages and competitive global-feature performance observed for LeVLJEPA with a ViT-B/16 backbone trained on the Datacomp-L scale persist when scaling to larger vision encoders and larger multimodal datasets.
References
Several questions remain open. The contrastive objectives retain a stronger mechanism for zero-shot image-text alignment, and we do not close this gap; whether the dense-feature advantage of non-contrastive pretraining can be combined with competitive alignment within a single objective is a natural direction for future work. Our experiments are conducted with a ViT-B/16 backbone, and while LeVLJEPA trains stably and remains competitive at the scale of Datacomp-L, establishing that these advantages persist at larger model and data scales remains important to verify.
The data-scaling experiment of Section~\ref{sec:scaling_data} is consistent with this trajectory, with both appearance-centric and motion-centric accuracy improving under a growing corpus; a controlled comparison at internet scale remains an open question.
Our controlled comparisons are conducted on a restricted corpus at up to ViT-L scale; the behavior of the objective at the model and data scales of recent video foundation models, and the interaction of SIGReg with very large batch and model regimes, remain to be characterized, and the favorable scaling observed in Section~\ref{sec:scaling_data} makes this a promising rather than merely open question.