计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (33): 243-245.

• 工程与应用 • 上一篇    下一篇

几种改进BP算法及其在应用中的比较分析

耿小庆1,2,和金生1,于宝琴2
  

  1. 1.天津大学 管理学院,天津 300072
    2.天津财经大学 信息系,天津 300222
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-11-21 发布日期:2007-11-21
  • 通讯作者: 耿小庆

Research on several improved BP algorithms and comparison in application

GENG Xiao-qing1,2,HE Jin-sheng1,YU Bao-qin2   

  1. 1.School of Management,Tianjin University,Tianjin 300072,China
    2.Department of Information,Tianjin University of Finance and Economics,Tianjin 300222,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-11-21 Published:2007-11-21
  • Contact: GENG Xiao-qing

摘要: 分析了标准BP算法存在的问题,对ABPM、HBP、LMBP三种改进的BP算法进行了研究,以企业战略预警系统为例,分别用改进算法进行仿真,从收敛速度、收敛精度等方面进行比较分析。仿真结果表明,三种改进算法均不同程度解决了标准BP算法存在的收敛速度慢、容易陷入局部极小等问题,其中LMBP算法达到的效果是最优的。

关键词: 自适应变步长算法, 同伦PB算法, LMBP, 预警

Abstract: In order to overcome the problems in standard BP algorithm,three kinds of improved BP algorithm are put forward.Taking strategic early-warning system as sample,ABPM,HBP and LMBP algorithm have better convergent speed and convergent precision than standard BP algorithm and avoid falling into local minimum.The result of simulation shows that LMBP is the optimization algorithm in three of improved BP algorithms.

Key words: adaptive variable step-size algorithm, homogeneous BP algorithm, LMBP, early-warning