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Enhancing Representation Learning with Deep Classifiers in Presence of Shortcut

Ahmadian, Amirhossein, 1992- (author)
Linköpings universitet,Statistik och maskininlärning,Tekniska fakulteten
Lindsten, Fredrik, 1984- (author)
Linköpings universitet,Reglerteknik,Statistik och maskininlärning,Tekniska fakulteten
 (creator_code:org_t)
2023
2023
English.
In: Proceedings of IEEE ICASSP 2023.
  • Conference paper (peer-reviewed)
Abstract Subject headings
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  • A deep neural classifier trained on an upstream task can be leveraged to boost the performance of another classifier in a related downstream task through the representations learned in hidden layers. However, presence of shortcuts (easy-to-learn features) in the upstream task can considerably impair the versatility of intermediate representations and, in turn, the downstream performance. In this paper, we propose a method to improve the representations learned by deep neural image classifiers in spite of a shortcut in upstream data. In our method, the upstream classification objective is augmented with a type of adversarial training where an auxiliary network, so called lens, fools the classifier by exploiting the shortcut in reconstructing images. Empirical comparisons in self-supervised and transfer learning problems with three shortcut-biased datasets suggest the advantages of our method in terms of downstream performance and/or training time.

Subject headings

NATURVETENSKAP  -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
NATURAL SCIENCES  -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
NATURVETENSKAP  -- Data- och informationsvetenskap -- Datorseende och robotik (hsv//swe)
NATURAL SCIENCES  -- Computer and Information Sciences -- Computer Vision and Robotics (hsv//eng)

Keyword

Deep Representation Learning
Shortcut Learning
Transfer Learning
Adversarial Methods
Computer Vision

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