Big Data: A Parallel Particle Swarm OptimizationBackPropagation Neural Network Algorithm Based on MapReduce
A backpropagation (BP) neural network can solve complicated random nonlinear mapping problems; therefore, it can be applied to a wide range of problems. However, as the sample size increases, the time required to train BP neural networks becomes lengthy. Moreover, the classification accuracy decrea... Full description
Journal Title:  PLoS ONE 2016, Vol.11(6) 
Main Author:  Cao, Jianfang 
Other Authors:  Cui, Hongyan , Shi, Hao , Jiao, Lijuan 
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ID:  EISSN: 19326203 ; DOI: 10.1371/journal.pone.0157551 ; PMCID: 4909218 ; PMID: 27304987 
Link:  pone.0157551.pdf 
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title:  Big Data: A Parallel Particle Swarm OptimizationBackPropagation Neural Network Algorithm Based on MapReduce 
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ispartof:  PLoS ONE, 2016, Vol.11(6) 
description:  A backpropagation (BP) neural network can solve complicated random nonlinear mapping problems; therefore, it can be applied to a wide range of problems. However, as the sample size increases, the time required to train BP neural networks becomes lengthy. Moreover, the classification accuracy decreases as well. To improve the classification accuracy and runtime efficiency of the BP neural network algorithm, we proposed a parallel design and realization method for a particle swarm optimization (PSO)optimized BP neural network based on MapReduce on the Hadoop platform using both the PSO algorithm and a parallel design. The PSO algorithm was used to optimize the BP neural network’s initial weights and thresholds and improve the accuracy of the classification algorithm. The MapReduce parallel programming model was utilized to achieve parallel processing of the BP algorithm, thereby solving the problems of hardware and communication overhead when the BP neural network addresses big data. Datasets on 5 different scales were constructed using the scene image library from the SUN Database. The classification accuracy of the parallel PSOBP neural network algorithm is approximately 92%, and the system efficiency is approximately 0.85, which presents obvious advantages when processing big data. The algorithm proposed in this study demonstrated both higher classification accuracy and improved time efficiency, which represents a significant improvement obtained from applying parallel processing to an intelligent algorithm on big data. 
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identifier:  EISSN: 19326203 ; DOI: 10.1371/journal.pone.0157551 ; PMCID: 4909218 ; PMID: 27304987 
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