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Self-Supervised Learning from Images with a Joint-Embedding Predictive Archi (arxiv.org)
1 point by ngrilly on Jun 23, 2024 | hide | past | pdf | discuss on HN

In plain words: It learns image features by hiding parts of a picture and guessing the hidden parts' abstract features from one visible region, rather than hand-tuned crops and color tweaks. A huge version trained in under 72 hours and did well counting objects and judging depth.

Abstract · Self-Supervised Learning from Images with a Joint-Embedding Predictive Architecture

This paper demonstrates an approach for learning highly semantic image representations without relying on hand-crafted data-augmentations. We introduce the Image-based Joint-Embedding Predictive Architecture (I-JEPA), a non-generative approach for self-supervised learning from images. The idea behind I-JEPA is simple: from a single context block, predict the representations of various target blocks in the same image. A core design choice to guide I-JEPA towards producing semantic representations is the masking strategy; specifically, it is crucial to (a) sample target blocks with sufficiently large scale (semantic), and to (b) use a sufficiently informative (spatially distributed) context block. Empirically, when combined with Vision Transformers, we find I-JEPA to be highly scalable. For instance, we train a ViT-Huge/14 on ImageNet using 16 A100 GPUs in under 72 hours to achieve strong downstream performance across a wide range of tasks, from linear classification to object counting and depth prediction.

Mahmoud Assran, Quentin Duval, Ishan Misra, Piotr Bojanowski, Pascal Vincent, Michael Rabbat, Yann LeCun, Nicolas Ballas
arXiv:2301.08243 · cs.CV, cs.AI, cs.LG, eess.IV · submitted Jan 19, 2023 · updated Apr 13, 2023
abstract · pdf · html · 2023 IEEE/CVF International Conference on Computer Vision

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Also discussed: Mar 2025 (40 points, 10 comments)