Deep ensemble learning for Alzheimer's disease classification

[Display omitted] •An ensemble learning method for Alzheimer's disease classification.•Using DBN to combine predictions and cope with their dependences.•Leveraging the wisdom of experts and multisource data to make better outcome.•Points out a new way to boost the primary care of Alzheimer'...

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Veröffentlicht in:Journal of biomedical informatics 2020-05, Vol.105, p.103411-103411, Article 103411
Hauptverfasser: An, Ning, Ding, Huitong, Yang, Jiaoyun, Au, Rhoda, Ang, Ting F.A.
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container_title Journal of biomedical informatics
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Ding, Huitong
Yang, Jiaoyun
Au, Rhoda
Ang, Ting F.A.
description [Display omitted] •An ensemble learning method for Alzheimer's disease classification.•Using DBN to combine predictions and cope with their dependences.•Leveraging the wisdom of experts and multisource data to make better outcome.•Points out a new way to boost the primary care of Alzheimer's disease. Ensemble learning uses multiple algorithms to obtain better predictive performance than any single one of its constituent algorithms could. With the growing popularity of deep learning technologies, researchers have started to ensemble these technologies for various purposes. Few, if any, however, have used the deep learning approach as a means to ensemble Alzheimer's disease classification algorithms. This paper presents a deep ensemble learning framework that aims to harness deep learning algorithms to integrate multisource data and tap the 'wisdom of experts'. At the voting layer, two sparse autoencoders are trained for feature learning to reduce the correlation of attributes and diversify the base classifiers ultimately. At the stacking layer, a nonlinear feature-weighted method based on a deep belief network is proposed to rank the base classifiers, which may violate the conditional independence. The neural network is used as a meta classifier. At the optimizing layer, over-sampling and threshold-moving are used to cope with the cost-sensitive problem. Optimized predictions are obtained based on an ensemble of probabilistic predictions by similarity calculation. The proposed deep ensemble learning framework is used for Alzheimer's disease classification. Experiments with the clinical dataset from National Alzheimer's Coordinating Center demonstrate that the classification accuracy of our proposed framework is 4% better than six well-known ensemble approaches, including the standard stacking algorithm as well. Adequate coverage of more accurate diagnostic services can be provided by utilizing the wisdom of averaged physicians. This paper points out a new way to boost the primary care of Alzheimer's disease from the view of machine learning.
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Ensemble learning uses multiple algorithms to obtain better predictive performance than any single one of its constituent algorithms could. With the growing popularity of deep learning technologies, researchers have started to ensemble these technologies for various purposes. Few, if any, however, have used the deep learning approach as a means to ensemble Alzheimer's disease classification algorithms. This paper presents a deep ensemble learning framework that aims to harness deep learning algorithms to integrate multisource data and tap the 'wisdom of experts'. At the voting layer, two sparse autoencoders are trained for feature learning to reduce the correlation of attributes and diversify the base classifiers ultimately. At the stacking layer, a nonlinear feature-weighted method based on a deep belief network is proposed to rank the base classifiers, which may violate the conditional independence. The neural network is used as a meta classifier. 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subjects Algorithms
Alzheimer Disease - diagnosis
Alzheimer's disease
Classification
Deep learning
Ensemble learning
Humans
Machine Learning
Neural Networks, Computer
Stacking
title Deep ensemble learning for Alzheimer's disease classification
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