基于混合核函数HS-RVM的边坡稳定性分析
发布时间：2018-09-04 10:55
【摘要】：传统计算方法难以准确地描述边坡稳定问题高度复杂的非线性特征,为此提出基于和声搜索(HS)与相关向量机(RVM)的边坡稳定性分析模型。由于边坡安全系数预测存在小样本、非线性、高维数等特征,采用RVM可以快速得出准确率更高的预测值,以及预测值的后验概率分布,并建立置信区间。由于RVM预测效果取决于核函数类型及参数选取的合理性,引入了泛化能力、插值能力均较强的混合核函数;并利用拉丁超立方抽样(LHS)初始化和声记忆库;后采用HS算法对混合核函数的参数组合进行全局寻优。通过编写Matlab程序,以预测值的平均绝对误差(MAE)最小化为寻优目标,建立基于HS-RVM的边坡稳定性分析模型。应用实例证明:HS-RVM充分挖掘了两算法的计算能力;模型不仅精度高,而且计算速度快,简单易用;在实际工程计算中有良好的应用前景。
[Abstract]:It is difficult to accurately describe the highly complex nonlinear characteristics of slope stability problems by traditional calculation methods. Therefore, a slope stability analysis model based on Harmony Search (HS) and Correlation Vector Machine (RVM) is proposed. Because the prediction effect of RVM depends on the reasonableness of kernel function type and parameter selection, a hybrid kernel function with strong generalization ability and interpolation ability is introduced; Latin hypercube sampling (LHS) is used to initialize the harmony memory library; and HS algorithm is used to initialize the hybrid kernel function. A slope stability analysis model based on HS-RVM is established by compiling a MATLAB program with the objective of minimizing the mean absolute error (MAE) of the predicted value. Engineering calculation has a good application prospect.
【作者单位】： 西安理工大学水利水电学院;西安理工大学西北旱区生态水利工程国家重点实验室培育基地;
【基金】：国家自然科学基金资助项目(51409205) 西安理工大学西北旱区生态水利工程国家重点实验室开放基金项目(106 221210) 水文水资源与水利工程科学国家重点实验室开放研究基金(2014491011)~~
【分类号】：TU43
，
本文编号：2221873
[Abstract]:It is difficult to accurately describe the highly complex nonlinear characteristics of slope stability problems by traditional calculation methods. Therefore, a slope stability analysis model based on Harmony Search (HS) and Correlation Vector Machine (RVM) is proposed. Because the prediction effect of RVM depends on the reasonableness of kernel function type and parameter selection, a hybrid kernel function with strong generalization ability and interpolation ability is introduced; Latin hypercube sampling (LHS) is used to initialize the harmony memory library; and HS algorithm is used to initialize the hybrid kernel function. A slope stability analysis model based on HS-RVM is established by compiling a MATLAB program with the objective of minimizing the mean absolute error (MAE) of the predicted value. Engineering calculation has a good application prospect.
【作者单位】： 西安理工大学水利水电学院;西安理工大学西北旱区生态水利工程国家重点实验室培育基地;
【基金】：国家自然科学基金资助项目(51409205) 西安理工大学西北旱区生态水利工程国家重点实验室开放基金项目(106 221210) 水文水资源与水利工程科学国家重点实验室开放研究基金(2014491011)~~
【分类号】：TU43
，
本文编号：2221873
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2221873.html
