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Continual semi-supervised learning through contrastive interpolation consistency

delete2022-10-01
delete15
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OA
AI
M
Matteo Boschini
P
Pietro Buzzega
L
Lorenzo Bonicelli *
A
Angelo Porrello
S
Simone Calderara
DOI:10.1016/j.patrec.2022.08.006delete
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Abstract

Abstract

En 中文
Continual Learning (CL) investigates how to train Deep Networks on a stream of tasks without incurring forgetting . CL settings proposed in literature assume that every incoming example is paired with ground -truth annotations. However, this clashes with many real-world applications: gathering labeled data, which is in itself tedious and expensive, becomes infeasible when data flow as a stream. This work explores Continual Semi-Supervised Learning (CSSL): here, only a small fraction of labeled input examples are shown to the learner. We assess how current CL methods (e.g.: EWC, LwF, iCaRL, ER, GDumb, DER) perform in this novel and challenging scenario, where overfitting entangles forgetting. Subsequently, we design a novel CSSL method that exploits metric learning and consistency regularization to leverage unlabeled examples while learning. We show that our proposal exhibits higher resilience to diminishing supervision and, even more surprisingly, relying only on 25% supervision suffices to outperform SOTA methods trained under full supervision. (c) 2022 Published by Elsevier B.V.
Keywords:
Continual learning
Deep learning
Semi -supervised learning
Weak supervision
Catastrophic forgetting
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Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.

Journal

Pattern Recognition Letters cover
Pattern Recognition Letters
IF:
3.3
Papers:
7.8K
Citations:
1.6W

Organization

U
universita di modena e reggio emilia
Scholars:
1.6W
Papers: 1.2W
Citations: 12