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Gauss-Legendre Iterative Methods and Their Applications on Nonlinear Systems and BVP-ODEs
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作者 Zhongli Liu guoqing sun 《Journal of Applied Mathematics and Physics》 2016年第11期2038-2046,共9页
In this paper, a group of Gauss-Legendre iterative methods with cubic convergence for solving nonlinear systems are proposed. We construct the iterative schemes based on Gauss-Legendre quadrature formula. The cubic co... In this paper, a group of Gauss-Legendre iterative methods with cubic convergence for solving nonlinear systems are proposed. We construct the iterative schemes based on Gauss-Legendre quadrature formula. The cubic convergence and error equation are proved theoretically, and demonstrated numerically. Several numerical examples for solving the system of nonlinear equations and boundary-value problems of nonlinear ordinary differential equations (ODEs) are provided to illustrate the efficiency and performance of the suggested iterative methods. 展开更多
关键词 Iterative Method Gauss-Legendre Quadrature Formula Nonlinear Systems Third-Order Convergence Nonlinear ODEs
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粗差探测与稳健估计相结合的方法在直线拟合中的应用 被引量:1
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作者 闫国庆 孙同贺 《测绘地理信息》 2017年第5期39-41,共3页
当观测向量和系数矩阵都含有粗差时,提出将粗差探测法和稳健加权总体最小二乘法二者有效结合的方法,在数据预处理阶段,利用粗差探测法剔除大的粗差,在参数估计阶段,利用稳健加权总体最小二乘法控制小粗差。以直线拟合为例,通过对比分析... 当观测向量和系数矩阵都含有粗差时,提出将粗差探测法和稳健加权总体最小二乘法二者有效结合的方法,在数据预处理阶段,利用粗差探测法剔除大的粗差,在参数估计阶段,利用稳健加权总体最小二乘法控制小粗差。以直线拟合为例,通过对比分析表明,粗差探测法和稳健加权总体最小二乘相结合的方法求出的参数结果最优。 展开更多
关键词 粗差探测 稳健估计 稳健加权总体最小二乘 直线拟合
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