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Video Representation Learning with Joint-Embedding Predictive Architectures (arxiv.org)
2 points by fofoz on Dec 20, 2024 | hide | past | pdf | discuss on HN

In plain words: The model learns by predicting how hidden summaries of future video frames will look, with a rule that keeps those summaries from all becoming identical. It beat a pixel-rebuilding baseline on tasks needing understanding of how objects move.

Abstract

Video representation learning is an increasingly important topic in machine learning research. We present Video JEPA with Variance-Covariance Regularization (VJ-VCR): a joint-embedding predictive architecture for self-supervised video representation learning that employs variance and covariance regularization to avoid representation collapse. We show that hidden representations from our VJ-VCR contain abstract, high-level information about the input data. Specifically, they outperform representations obtained from a generative baseline on downstream tasks that require understanding of the underlying dynamics of moving objects in the videos. Additionally, we explore different ways to incorporate latent variables into the VJ-VCR framework that capture information about uncertainty in the future in non-deterministic settings.

Katrina Drozdov, Ravid Shwartz-Ziv, Yann LeCun
arXiv:2412.10925 · cs.CV, cs.AI · submitted Dec 14, 2024
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