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- ％ SSOR预处理的共轭梯度法求解方程Ax=b
％ 输入参数说明
％ A 正定矩阵[n*n]
％ b 右边向量
％ omega SSOR预处理参数(0--2)
％ Times 迭代次数
％ errtol 给定误差终止条件
％
％输出参数
％ NewX 方程Ax=b的x近似解
％ avgerr 求解的当前平均绝对误差
Update : 2008-10-13 Size : 996byte Publisher : zhxj - 不用说的好，我们室主任开发的Photonics cyrestal band gap计算Fortran代码。注意不要忘了input文本。
Update : 2008-10-13 Size : 33.19kb Publisher : 杜克 - pcg共轭梯度法
Update : 2010-09-24 Size : 1.79mb Publisher : tanxing5209@163.com - ％ SSOR预处理的共轭梯度法求解方程Ax=b
％ 输入参数说明
％ A 正定矩阵[n*n]
％ b 右边向量
％ omega SSOR预处理参数(0--2)
％ Times 迭代次数
％ errtol 给定误差终止条件
％
％输出参数
％ NewX 方程Ax=b的x近似解
％ avgerr 求解的当前平均绝对误差- SSOR preconditioning conjugate gradient method for solving equations Ax = b the input parameter descriptions A positive definite matrix [n* n] b right side vector omega SSOR preconditioning parameters (0- 2) Times iterations errtol termination of a given error condition NewX output parameter equation Ax = b of x approximate solution to solve the current avgerr average absolute error
Update : 2025-04-07 Size : 1kb Publisher : zhxj - PC机与GPS的通信方案设计与程序 -PC-communication with the GPS program design and procedures
Update : 2025-04-07 Size : 102kb Publisher : 陈康 - 不用说的好，我们室主任开发的Photonics cyrestal band gap计算Fortran代码。注意不要忘了input文本。-Needless to say the good, our director of development Photonics cyrestal band gap calculation of Fortran code. Do not forget to pay attention to input text.
Update : 2025-04-07 Size : 33kb Publisher : 杜克 - 求解大规模对称矩阵的CG算法，及预处理PCG使用Matlab语言，可以解1000阶以上的矩阵，以病态矩阵hilbert为例-Solving large-scale symmetric matrix of the CG algorithm, and pretreatment of PCG using Matlab language, you can order more than 1,000 solution matrix, as an example to pathological matrix hilbert
Update : 2025-04-07 Size : 3kb Publisher : 路路 - CG方法 高等数值分析 PCG方法 最速下降法-CG methods of numerical analysis of higher PCG method steepest descent method
Update : 2025-04-07 Size : 1kb Publisher : CAICAI - matlab files getting PCG input from celphone
Update : 2025-04-07 Size : 383kb Publisher : Niranjith - 采用预处理共轭梯度法求解大型线性方程组的C源代码-C code of PCG for large linear system solving
Update : 2025-04-07 Size : 160kb Publisher : 张旭平 - this code is to diplay any wave file(heart sound) into PCG waveform
Update : 2025-04-07 Size : 1kb Publisher : mat - 弹塑性力学的方法在解决实际问题上是不能与有限元法相提并论的。所以，...理论只能是解析的，而有限元法只不过是一种现在应用得很成功的技术手段而已-Elastic-plastic mechanics, in solving practical problems are not comparable with the finite element method. Therefore, the ... theory can only be resolved, and the finite element method is only a very successful application of technology now means nothing
Update : 2025-04-07 Size : 46kb Publisher : 王本帖 - 弹塑性力学的方法在解决实际问题上是不能与有限元法相提并论的。所以，...理论只能是解析的，而有限元法只不过是一种现在应用得很成功的技术手段而已-Elastic-plastic mechanics, in solving practical problems are not comparable with the finite element method. Therefore, the ... theory can only be resolved, and the finite element method is only a very successful application of technology now means nothing
Update : 2025-04-07 Size : 46kb Publisher : 王本帖 - 引入较好的预处理子，加快共轭梯度法的收敛速度-The introduction of better preconditioners, conjugate gradient method to speed up the convergence rate
Update : 2025-04-07 Size : 9kb Publisher : 11 - PCG 方法的干涉图解缠绕，从国外网站下载的-PCG 方法的干涉图解缠绕
Update : 2025-04-07 Size : 5kb Publisher : 11 - this matlab code denoise the pink noise from pcg signal and generate the specogram
Update : 2025-04-07 Size : 4kb Publisher : sonu misal - this file denoise the pcg signal by wavelet and find the best wavelet who denoise the pcg signal
Update : 2025-04-07 Size : 4kb Publisher : sonu misal - PCG Preconditioned Conjugate Gradients Method is a replacement of the standard built-in PCG code. Two new options are implemented: flex and null . The flex option changes the standard PCG algorithm into the flexible one. It allows using sophisticated preconditioning, not limited to the traditional fixed SPD preconditioners, as required by the standard PCG.
With the null option, the code attempts to compute a nontrivial solution X of the homogeneous system of linear equations A*X=0. Here, the coefficient matrix A must be Hermitian and positive semi-definite. If the null-space of A is more than one dimensional, i.e. A*X=0 allows multiple linear independent solutions, the code still converges to one solution, namely, the projection of the initial guess to the null-space.
Without the new options, the new PCG code works exactly the same way as the latest revision of the built-in PCG-PCG Preconditioned Conjugate Gradients Method is a replacement of the standard built-in PCG code. Two new options are implemented: flex and null . The flex option changes the standard PCG algorithm into the flexible one. It allows using sophisticated preconditioning, not limited to the traditional fixed SPD preconditioners, as required by the standard PCG.
With the null option, the code attempts to compute a nontrivial solution X of the homogeneous system of linear equations A*X=0. Here, the coefficient matrix A must be Hermitian and positive semi-definite. If the null-space of A is more than one dimensional, i.e. A*X=0 allows multiple linear independent solutions, the code still converges to one solution, namely, the projection of the initial guess to the null-space.
Without the new options, the new PCG code works exactly the same way as the latest revision of the built-in PCG
Update : 2025-04-07 Size : 5kb Publisher : asqur - matlab source code for pcg analysis
Update : 2025-04-07 Size : 8.22mb Publisher : mashuri - pcg compute program, can use solve linear space equation.
Update : 2025-04-07 Size : 5kb Publisher : liumangft