改进的BP网络在地下水水质评价中的应用  

The Evaluation of Groundwater Quality in Siping Through the Improved BP-Network

作　　者：耿冬青[1] 张洪国[1] 王福刚[1] 

机构地区：[1]长春科技大学环境与建设工程学院,吉林长春130026

出　　处：《世界地质》2000年第4期366-369,374,共5页World Geology

摘　　要：针对BP网络在连接权的赋值和调整方面存在着固有不足的缺陷 ,尝试应用近些年发展起来的浮点遗传算法对BP网络的连接权进行优化。应用改进的BP网络对四平市地下水水质进行评价 ,结果证明 。BP-network is widely applied in many fields. But BP-network has some inherent deficiencies in assignment and adjustment of weights. In actual application, BP-network is difficult to converge so as not to achieve the prospective purpose. In allusion to these deficiencies in BP-network, this article makes an attempt to apply Float-encoding Genetic Algorithms(FGAs) developed in recent years to optimize the weights of BP-network. And it gets over these deficiencies in BP-network. The paper uses the improved BP-network to evaluate groundwater quality in Siping city.The result proves that FGAs achieve better effect.

关 键 词：BP网络 浮点遗传算法 地下水 水质评价 连接权 

分 类 号：X824[环境科学与工程—环境工程] TP183[自动化与计算机技术—控制理论与控制工程]