Title
Unsupervised Task Design to Meta-Train Medical Image Classifiers
Abstract
Meta-training has been empirically demonstrated to be the most effective pre-training method for few-shot learning of medical image classifiers (i.e., classifiers modeled with small training sets). However, the effectiveness of meta-training relies on the availability of a reasonable number of hand-designed classification tasks, which are costly to obtain, and consequently rarely available. In this paper, we propose a new method to unsupervisedly design a large number of classification tasks to meta-train medical image classifiers. We evaluate our method on a breast dynamically contrast enhanced magnetic resonance imaging (DCE-MRI) data set that has been used to benchmark few-shot training methods of medical image classifiers. Our results show that the proposed unsupervised task design to meta-train medical image classifiers builds a pre-trained model that, after fine-tuning, produces better classification results than other unsupervised and supervised pre-training methods, and competitive results with respect to meta-training that relies on hand-designed classification tasks.
Year
DOI
Venue
2020
10.1109/ISBI45749.2020.9098470
2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI)
Keywords
DocType
ISSN
meta-training,unsupervised learning,unsupervised task design,breast image analysis,magnetic resonance imaging,few-shot classification,pre-training,clustering
Conference
1945-7928
ISBN
Citations 
PageRank 
978-1-5386-9331-5
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Maicas Gabriel100.34
Cuong Nguyen220735.89
Motlagh Farbod300.34
Jacinto C. Nascimento439640.94
Gustavo Carneiro529227.63