CN108628803A - 一种基于牛顿迭代的线性方程求解方法 - Google Patents

一种基于牛顿迭代的线性方程求解方法 Download PDF

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Publication number
CN108628803A
CN108628803A CN201710164065.3A CN201710164065A CN108628803A CN 108628803 A CN108628803 A CN 108628803A CN 201710164065 A CN201710164065 A CN 201710164065A CN 108628803 A CN108628803 A CN 108628803A
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equation
linear equation
indicate
newton
newton iteration
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刘鸿雁
车万毅
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Beijing Music Christie Animation Technology Co Ltd
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Beijing Music Christie Animation Technology Co Ltd
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Priority to CN201710164065.3A priority Critical patent/CN108628803A/zh
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10Complex mathematical operations
    • G06F17/11Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
    • G06F17/12Simultaneous equations, e.g. systems of linear equations

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  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

本发明涉及一种基于牛顿迭代的线性方程求解方法,所述方法包括:使用牛顿法处理线性方程;对处理后的方程进行优化,获得新的方程;求解公式系数。实现在不求牛顿迭代中的解海森矩阵和雅可比矩阵的前提下,获得线性方程最优解。

Description

一种基于牛顿迭代的线性方程求解方法
技术领域
本发明涉及计算机技术领域,尤其是一种基于牛顿迭代的线性方程求解方法。
背景技术
在图像处理和模式识别等机器学习领域中,对最小二乘问题的求解通常采用牛顿法求解,但当涉及数据量较大时,由于海森矩阵难以求得、梯度下降方向难以确定等问题,容易导致求解困难或不准确。本发明提出一种基于牛顿迭代的线性方程求解方法,能够有效解决这一问题。
发明内容
本发明实施例提供了一种基于牛顿迭代的线性方程求解方法,用于解决线性方程求解问题。
本发明提出一种基于牛顿迭代的线性方程求解方法,包括:使用使用牛顿法处理 方程1:;对处理后的方程进行优化,获得新的方 程2:;求解公式系数。
在其中一个实施例中,所述方程1中,△x表示随机的梯度方向步长,θx表示训练得到的样本数据矩阵,为已知量。
在其中一个实施例中,所述R、b为待求解系数矩阵:,其 中,H、J分别表示海森矩阵和雅克比矩阵。
在其中一个实施例中,求解公式4:获得 最优解。其中,di表示第i个训练样本,xk i表示第i个样本在第k次迭代后的标记的位置。
附图说明
图1为一个实施例中一种基于牛顿迭代的线性方程求解方法的流程图。

Claims (5)

1.一种基于牛顿迭代的线性方程求解方法,包括:使用使用牛顿法处理方程1:;对处理后的方程进行优化,获得新的方程2:;求解公式系数。
2.根据权利要求1所述的方法,其特征在于,所述方程1中,△x表示随机的梯度方向步长,θx表示训练得到的样本数据矩阵,为已知量。
3.根据权利要求1所述的方程2,其特征在于,所述R、b为待求解系数矩阵: ,其中,H、J分别表示海森矩阵和雅克比矩阵。
4.根据权利要求3所述的方法,其特征在于,求解公式4: 获得最优解。
5.其中,di表示第i个训练样本,xk i表示第i个样本在第k次迭代后的标记的位置。
CN201710164065.3A 2017-03-20 2017-03-20 一种基于牛顿迭代的线性方程求解方法 Pending CN108628803A (zh)

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CN201710164065.3A CN108628803A (zh) 2017-03-20 2017-03-20 一种基于牛顿迭代的线性方程求解方法

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CN201710164065.3A CN108628803A (zh) 2017-03-20 2017-03-20 一种基于牛顿迭代的线性方程求解方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112052529A (zh) * 2020-09-25 2020-12-08 中国直升机设计研究所 一种提高大前进比旋翼配平收敛性的计算方法
CN114485730A (zh) * 2022-01-25 2022-05-13 湖南大学 一种基于牛顿迭代法的dvl误差标定方法及系统

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112052529A (zh) * 2020-09-25 2020-12-08 中国直升机设计研究所 一种提高大前进比旋翼配平收敛性的计算方法
CN112052529B (zh) * 2020-09-25 2023-03-17 中国直升机设计研究所 一种提高大前进比旋翼配平收敛性的计算方法
CN114485730A (zh) * 2022-01-25 2022-05-13 湖南大学 一种基于牛顿迭代法的dvl误差标定方法及系统

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Application publication date: 20181009