unknown

Research on Optimization of Neural Network Model By Improved PSO Algorithm and Its Application

Abstract

在水文学科领域中,准确的预报问题是防灾减灾的重要研究课题之一。近年来,由于全球气候的变化和人类活动的影响,全国的气象灾害越来越严重,而且持续的时间比较长和影响的范围也越来越大,我国国民经济的发展受到了严重地影响。如何对现有水文资料的分析和研究并找到其变化的规律是非常必要和重要的。近年来,国内外研究者已成功的将神经网络(NeuralNetworks,NNS)方法应用在大气学科预测建模等各个复杂领域。但目前还没有找到确定优化神经网络的各个参数的定量方法,其中采用最多的是BP神经网络,但对于复杂多维的训练数据或设置不同的参数会存在过拟合、收敛速度低、陷入局部最优和预测效果差等缺陷。这就极大地限制了神...In the field of hydrological subject, accurate prediction is one of the important research topics preventing disaster. In recent years, because of the impact of global climate change and human activities, the national meteorological disasters get more and more serious, and last longer and the influence scope is larger, thus, the development of national economy in China has been seriously affected....学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201223028

    Similar works