Search - LSQR matlab

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[matlab] TVL1_HCS_v1 DL : 0: % May 2010 % This matlab code implements TVL1 based Hybrid Compressive Sensing using LSQR. % Only suitable the small scale data due to the costly storage and computation. % % A - M x N measurement matrix: random sampling alone or hybrid sampling (random sampling and low resolution sampling) % % gamma - weight for L1-norm of the diagonal gradients % % tol - tolerance for stopping criterion. % - DEFAULT 1e-3 if omitted. % % maxIter - maximum number of iterations % - DEFAULT 50, if omitted. %Original TVL1 based Hybrid Compressive Sensing problem: % min ||gx ||_1 + ||gy ||_1 +\gamma *(||gxy ||_1 + ||gyx ||_1) % s.t. A*I = b and I >=0 %It can be solved using PDCO as follows % min c*x s.t. Phi * x =B % x = [I; gx; -gx; gy; -gy; gxy; -gxy; gyx; -gyx] % Phi and B enforce the measurement (A) and constrant among the elements of x; % Xianbiao Shu, May 2010. Questions? xshu2@uiuc.edu; % Copyright: Computer Vision and Robotics Lab, University of Illinois, Urbana-Champaign % Acknowledgement: Primal-Dual interior method for Convex Objectives (PDCO) % http://www.stanford.edu/group/SOL/software/pdco.html
Update : 2011-04-21 Size : 895.62kb Publisher : li123kai@126.com
[matlab] lsqr_b DL : 0: 此算法为用于解反问题的lsqr算法，对Ax=b，输入矩阵A，列向量b，以及迭代步数，求得列向量x-This algorithm is used for solution of the inverse problem lsqr algorithm, Ax = b, the input matrix A, the column vector b, as well as the number of iterative steps, to seek the column vector x
Update : 2025-02-19 Size : 2kb Publisher : gongwei
[Other] LSQR DL : 0: 采用CG法求解稀疏不对称的Ax=b-Implementation of a conjugate-gradient type method for solving sparse linear equations and sparse least-squares problems: Solve Ax = b or minimize || Ax- b ||2 or minimize || Ax- b ||2+ d2 ||x||2. The matrix A may be square or rectangular (over-determined or under-determined), and may have any rank. It is represented by a routine for computing Av and A u for given vectors v and u.
Update : 2025-02-19 Size : 44kb Publisher : LSQR
[Algorithm] lsqr-matlab DL : 0: matlab实现lsqr算法的源码，有强烈的参考价值，可用于地球物理反演。-matlab realize lsqr algorithm source code, there is a strong reference value, can be used for geophysical inversion.
Update : 2025-02-19 Size : 6kb Publisher : muyoubaiyu
[Algorithm] lsqr DL : 0: 最小二乘matlab算法，可以直接调用，用于数学算法，稀疏变换，求解等需要用到- Matlab least squares algorithm, can be called directly for mathematical algorithms, sparse transformation, such as the need to use to solve
Update : 2025-02-19 Size : 4kb Publisher : 刘
[Algorithm] LSQR-NNL DL : 0: 可用于求解超大规模线性方程组非负解的MATLAB函数-Given a tall full-rank matrix A, solves the nonnegative least squares problem: min ||Ax-b|| s.t. x>= 0 and returns the minimizer x. The argument err is the tolerance used in testing for zeros
Update : 2025-02-19 Size : 1kb Publisher :
[assembly language] LSQR DL : 0: 计算病态线性方程的LSQR算法，MATLAB汇编程序。-LSQR algorithm of morbid linear equations , MATLAB assembler
Update : 2025-02-19 Size : 1kb Publisher : 晨之曦