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Optimization Strategy of a Stacked Autoencoder and Deep Belief Network in a Hyperspectral Remote-Sensing Image Classification Model

Optimization Strategy of a Stacked Autoencoder and Deep Belief Network in a Hyperspectral Remote-Sensing Image Classification Model

Authors :
Xiaoai Dai
Junying Cheng
Shouheng Guo
Chengchen Wang
Ge Qu
Wenxin Liu
Weile Li
Heng Lu
Youlin Wang
Binyang Zeng
Yunjie Peng
Shuneng Liang
Source :
Discrete Dynamics in Nature and Society, Vol 2023 (2023)
Publication Year :
2023
Publisher :
Hindawi Limited, 2023.

Abstract

Improvements in hyperspectral image technology, diversification methods, and cost reductions have increased the convenience of hyperspectral data acquisitions. However, because of their multiband and multiredundant characteristics, hyperspectral data processing is still complex. Two feature extraction algorithms, the autoencoder (AE) and restricted Boltzmann machine (RBM), were used to optimize the classification model parameters. The optimal classification model was obtained by comparing a stacked autoencoder (SAE) and a deep belief network (DBN). Finally, the SAE was further optimized by adding sparse representation constraints and GPU parallel computation to improve classification accuracy and speed. The research results show that the SAE enhanced by deep learning is superior to the traditional feature extraction algorithm. The optimal classification model based on deep learning, namely, the stacked sparse autoencoder, achieved 93.41% and 94.92% classification accuracy using two experimental datasets. The use of parallel computing increased the model’s training speed by more than seven times, solving the model’s lengthy training time limitation.

Subjects

Subjects :
Mathematics
QA1-939

Details

Language :
English
ISSN :
1607887X and 52612287
Volume :
2023
Database :
Directory of Open Access Journals
Journal :
Discrete Dynamics in Nature and Society
Publication Type :
Academic Journal
Accession number :
edsdoj.71c0bb7c7e5e435bbe38d9f526122872
Document Type :
article
Full Text :
https://doi.org/10.1155/2023/9150482