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Greedy AutoAugment.

Authors :
Naghizadeh, Alireza
Abavisani, Mohammadsajad
Metaxas, Dimitris N.
Source :
Pattern Recognition Letters. Oct2020, Vol. 138, p624-630. 7p.
Publication Year :
2020

Abstract

• The greedy AutoAugment is proposed to find the best augmentation policies. • It reduces the exponential growth of the number of possible trials to linear growth. • The algorithm is computationally efficient and can concatenate many sub-policies. • The greedy approach helps the algorithm to increase the accuracy of the network. A major problem in data augmentation is to ensure that the generated new samples cover the search space. This is a challenging problem and requires exploration for data augmentation policies to ensure their effectiveness in covering the search space. In this paper, we propose Greedy AutoAugment as a highly efficient search algorithm to find the best augmentation policies. We use a greedy approach to reduce the exponential growth of the number of possible trials to linear growth. The Greedy Search also helps us to lead the search towards the sub-policies with better results, which eventually helps to increase the accuracy. The proposed method can be used as a reliable addition to the current artifitial neural networks. Our experiments on four datasets (Tiny ImageNet, CIFAR-10, CIFAR-100, and SVHN) show that Greedy AutoAugment provides better accuracy, while using 360 times fewer computational resources. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
01678655
Volume :
138
Database :
Academic Search Index
Journal :
Pattern Recognition Letters
Publication Type :
Academic Journal
Accession number :
146478436
Full Text :
https://doi.org/10.1016/j.patrec.2020.08.024