The dimensional collapse of representations in self-supervised contrastive learning is an ever-present issue. One notable technique to prevent such a collapse of representations is using a multi-layer...
The paper investigates the function of the projector in contrastive self‑supervised learning by analyzing rank dynamics in the encoder and projector. It finds that rank reduction mainly occurs in the last layer and proposes a targeted weight regularization for that layer, which outperforms global orthogonal regularization. Experiments on SimCLR with ImageNet100 and CIFAR datasets show more than 1% Top‑1 accuracy improvement and consistent gains over baseline variants.
By Siladittya Manna, Priyangshu Mandal, Umapada Pal, Saumik Bhattacharya
arXiv:2607. 07513v1 Announce Type: new Abstract: Self-supervised learning matches supervised accuracy from a fraction of the labels, but the labeled-sample efficiency behind this has lacked a theoretical explanation.
By Adam M. Oberman
LeVJEPA is a video encoder that eliminates the need for architectural asymmetries, exponential-moving-average target encoders, stop-gradients, and capacity-limited predictors used in prior self‑supervised methods. It trains a single encoder with an invariance loss over global and local views, regularized by SIGReg to prevent collapse, and achieves strong performance with far less pretraining compute. The approach also allows block‑causal attention, making temporal ordering a property of the encoder itself, and matches or surpasses state‑of‑the‑art baselines on both appearance‑centric and motion‑centric benchmarks.
By Lukas Kuhn, Lucas Maes, Giuseppe Serra, Quentin Le Lidec, Yann LeCun, Randall Balestriero, Florian Buettner
arXiv:2608. 15901v1 Announce Type: cross Abstract: Continual learning regularizers like EWC fight forgetting by penalizing changes from previous-task parameters with per-parameter importance, typically diagonal Fisher values.
By Brian B. Moser, Ahmed Anwar, Tobias Christian Nauen, Shishir Muralidhara, Federico Raue, Ren\'e Schuster, Stanislav Frolov, Andreas Dengel
arXiv:2609.15825v1 Announce Type: new
Abstract: A self-supervised encoder is trained once, frozen, and reused through lightweight probes on tasks nobody named at training time; the practitioner's que...
By Dier Tang, Jing Yee Tan, Guangyue Han