资源简介
使用admm算法解决(group_lasso类)问题的matlab程序。
代码片段和文件信息
function [z history] = group_lasso(A b lambda p rho alpha)
% group_lasso Solve group lasso problem via ADMM
%
% [x history] = group_lasso(A b p lambda rho alpha);
%
% solves the following problem via ADMM:
%
% minimize 1/2*|| Ax - b ||_2^2 + \lambda sum(norm(x_i))
%
% The input p is a K-element vector giving the block sizes n_i so that x_i
% is in R^{n_i}.
%
% The solution is returned in the vector x.
%
% history is a structure that contains the objective value the primal and
% dual residual norms and the tolerances for the primal and dual residual
% norms at each iteration.
%
% rho is the augmented Lagrangian parameter.
%
% alpha is the over-relaxation parameter (typical values for alpha are
% between 1.0 and 1.8).
%
%
% More information ca
属性 大小 日期 时间 名称
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文件 1912 2014-04-22 09:09 lizi.m
文件 3588 2014-04-21 20:18 group_lasso.m
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