Learning Low-Rank Class-Specific Dictionary and Sparse Intra-Class Variant Dictionary for Face Recognition
文章及实现代码
代码片段和文件信息
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2014-07-27 17:30 LRAE+SC
文件 1415 2014-07-27 17:30 LRAE+SCLRSE_SC.m
文件 920 2014-07-27 17:28 LRAE+SCSRCE_function.m
目录 0 2014-07-27 17:13 LRAE+SCinexact_alm_rpca
文件 6148 2009-10-31 23:23 LRAE+SCinexact_alm_rpca.DS_Store
目录 0 2014-07-27 17:13 LRAE+SCinexact_alm_rpcaPROPACK
文件 202 1998-12-07 23:24 LRAE+SCinexact_alm_rpcaPROPACKAfunc.m
文件 224 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKAtAfunc.m
文件 232 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKAtransfunc.m
文件 293 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKCfunc.m
文件 987 2009-07-02 14:28 LRAE+SCinexact_alm_rpcaPROPACKdsqr.m
文件 74546 2004-03-18 04:12 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexglx
文件 25208 2004-03-18 05:39 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsg
文件 26109 2000-05-01 07:18 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsg64
文件 95852 2000-05-26 08:14 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsol
文件 55808 2009-03-14 16:23 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexw32
文件 2102 2004-03-18 03:41 LRAE+SCinexact_alm_rpcaPROPACKdsqr_mex.c
文件 1504 2000-05-29 17:52 LRAE+SCinexact_alm_rpcaPROPACKcompute_int.m
文件 445 2004-03-18 03:28 LRAE+SCinexact_alm_rpcaPROPACKdbdqr.f
文件 256353 1998-09-08 03:13 LRAE+SCinexact_alm_rpcaPROPACKhelio.mat
文件 3544 2000-05-27 07:45 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.doc
文件 19514 2000-06-08 08:27 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.m
文件 3544 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.txt
文件 2522 2000-05-27 07:45 LRAE+SCinexact_alm_rpcaPROPACKlaneig.doc
文件 9695 2001-08-16 03:57 LRAE+SCinexact_alm_rpcaPROPACKlaneig.m
文件 2522 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlaneig.txt
文件 3336 2000-05-27 07:46 LRAE+SCinexact_alm_rpcaPROPACKlanpro.doc
文件 14762 2000-05-10 07:20 LRAE+SCinexact_alm_rpcaPROPACKlanpro.m
文件 3336 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlanpro.txt
文件 2386 2000-05-27 07:46 LRAE+SCinexact_alm_rpcaPROPACKlansvd.doc
文件 9307 2000-05-17 07:55 LRAE+SCinexact_alm_rpcaPROPACKlansvd.m
............此处省略27个文件信息
function Xout = learn_coefficients (A Y gamma Xinit)
% The feature-sign search algorithm
% L1-regularized least squares problem solver
%
% This code solves the following problem:
%
% minimize_s 0.5*||y - A*x||^2 + gamma*||x||_1
%
% The detail of the algorithm is described in the following paper:
% ‘Efficient Sparse Codig Algorithms‘ Honglak Lee Alexis Battle Rajat Raina Andrew Y. Ng
% Advances in Neural Information Processing Systems (NIPS) 19 2007
%
% Written by Honglak Lee
% Copyright 2007 by Honglak Lee Alexis Battle Rajat Raina and Andrew Y. Ng
warning(‘off‘ ‘MATLAB:divideByZero‘);
use_Xinit= false; %judge wheather X have initial---Xinit
if exist(‘Xinit‘ ‘var‘)
use_Xinit= true; % We have initial Xinit for X
end
Xout= zeros(size(A2) size(Y2));% output the result y=AX
% y--k*NA--k*mX--m*N
AtA = A‘*A; % A is preseted
AtY = A‘*Y; % Y also presented
rankA = rank(AtA);
%rankA = min(size(A1)-10 size(A2)-10);% X must be sparse
for i=1:size(Y2)% each column of Y is a sample
% if mod(i 100)==0 fprintf(‘.‘); end %fprintf(1 ‘l1ls_featuresign: %d/%d
‘ i size(Y2)); end
if use_Xinit % We have Xinitused it
idx1 = find(Xinit(:i)~=0); % find nonzero coefficients ith sample
maxn = min(length(idx1) rankA); % length(idx1) is the number of nonzero coefficients
xinit = zeros(size(Xinit(:i))); % all zeros
xinit(idx1(1:maxn)) = Xinit(idx1(1:maxn) i);
[Xout(:i) fobj]= ls_featuresign_sub (A Y(:i) AtA AtY(: i) gamma xinit);
else
[Xout(:i) fobj]= ls_featuresign_sub (A Y(:i) AtA AtY(: i) gamma);
end
end
fprintf(1 ‘
‘);
warning(‘on‘ ‘MATLAB:divideByZero‘);
return;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function [x fobj] = ls_featuresign_sub (A y AtA Aty gamma xinit)
[LM] = size(A); % the dimension of sample----L the number of atoms---M
rankA = rank(AtA);
%rankA = min(size(A1)-10 size(A2)-10);% why??
% Step 1: Initialize
usexinit = false;
if ~exist(‘xinit‘ ‘var‘) || isempty(xinit) % we don‘t have xinit
xinit= [];
x= sparse(zeros(M1)); % the coefficients all zerosinitialize x=0;
theta= sparse(zeros(M1)); % the sign of xitheta=0;
act= sparse(zeros(M1)); % active setactive set={};
allowZero = false;
else
% xinit = [];
x= sparse(xinit); % init xx=xinit;
theta= sparse(sign(x)); % thetai is the sign of xi
act= sparse(abs(theta)); % nonzeros coefficience
usexinit = true; % use init
allowZero = true;
end
%fname_debug = sprintf(‘../tmp/fsdebug_%x.mat‘ datestr(now 30));
fobj = fobj_featuresign(x A y AtA Aty gamma);% objective function‘s value
ITERMAX=400; % iteration
optimality1=false; % check opt
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2014-07-27 17:30 LRAE+SC
文件 1415 2014-07-27 17:30 LRAE+SCLRSE_SC.m
文件 920 2014-07-27 17:28 LRAE+SCSRCE_function.m
目录 0 2014-07-27 17:13 LRAE+SCinexact_alm_rpca
文件 6148 2009-10-31 23:23 LRAE+SCinexact_alm_rpca.DS_Store
目录 0 2014-07-27 17:13 LRAE+SCinexact_alm_rpcaPROPACK
文件 202 1998-12-07 23:24 LRAE+SCinexact_alm_rpcaPROPACKAfunc.m
文件 224 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKAtAfunc.m
文件 232 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKAtransfunc.m
文件 293 1998-12-07 23:25 LRAE+SCinexact_alm_rpcaPROPACKCfunc.m
文件 987 2009-07-02 14:28 LRAE+SCinexact_alm_rpcaPROPACKdsqr.m
文件 74546 2004-03-18 04:12 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexglx
文件 25208 2004-03-18 05:39 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsg
文件 26109 2000-05-01 07:18 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsg64
文件 95852 2000-05-26 08:14 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexsol
文件 55808 2009-03-14 16:23 LRAE+SCinexact_alm_rpcaPROPACKdsqr.mexw32
文件 2102 2004-03-18 03:41 LRAE+SCinexact_alm_rpcaPROPACKdsqr_mex.c
文件 1504 2000-05-29 17:52 LRAE+SCinexact_alm_rpcaPROPACKcompute_int.m
文件 445 2004-03-18 03:28 LRAE+SCinexact_alm_rpcaPROPACKdbdqr.f
文件 256353 1998-09-08 03:13 LRAE+SCinexact_alm_rpcaPROPACKhelio.mat
文件 3544 2000-05-27 07:45 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.doc
文件 19514 2000-06-08 08:27 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.m
文件 3544 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlanbpro.txt
文件 2522 2000-05-27 07:45 LRAE+SCinexact_alm_rpcaPROPACKlaneig.doc
文件 9695 2001-08-16 03:57 LRAE+SCinexact_alm_rpcaPROPACKlaneig.m
文件 2522 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlaneig.txt
文件 3336 2000-05-27 07:46 LRAE+SCinexact_alm_rpcaPROPACKlanpro.doc
文件 14762 2000-05-10 07:20 LRAE+SCinexact_alm_rpcaPROPACKlanpro.m
文件 3336 2000-05-27 08:40 LRAE+SCinexact_alm_rpcaPROPACKlanpro.txt
文件 2386 2000-05-27 07:46 LRAE+SCinexact_alm_rpcaPROPACKlansvd.doc
文件 9307 2000-05-17 07:55 LRAE+SCinexact_alm_rpcaPROPACKlansvd.m
............此处省略27个文件信息
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