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Title: Understanding the learned behavior of customized convolutional neural networks toward malaria parasite detection in thin blood smear images
Authors: Sivaramakrishnan Rajaraman
Kamolrat Silamut
Md A. Hossain
I. Ersoy
Richard J. Maude
Stefan Jaeger
George R. Thoma
Sameer K. Antani
Mahidol University
Nuffield Department of Clinical Medicine
University of Missouri-Columbia
National Library of Medicine
Chittagong General Hospital
Keywords: Medicine
Issue Date: 1-Jul-2018
Citation: Journal of Medical Imaging. Vol.5, No.3 (2018)
Abstract: © 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). Convolutional neural networks (CNNs) have become the architecture of choice for visual recognition tasks. However, these models are perceived as black boxes since there is a lack of understanding of the learned behavior from the underlying task of interest. This lack of transparency is a serious drawback, particularly in applications involving medical screening and diagnosis since poorly understood model behavior could adversely impact subsequent clinical decision-making. Recently, researchers have begun working on this issue and several methods have been proposed to visualize and understand the behavior of these models. We highlight the advantages offered through visualizing and understanding the weights, saliencies, class activation maps, and region of interest localizations in customized CNNs applied to the challenge of classifying parasitized and uninfected cells to aid in malaria screening. We provide an explanation for the models' classification decisions. We characterize, evaluate, and statistically validate the performance of different customized CNNs keeping every training subject's data separate from the validation set.
ISSN: 23294310
Appears in Collections:Scopus 2018

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