%?l1dantzig_example.m
%
%?Test?out?l1dantzig?code?（l1?minimization?with?bounded?residual?correlation）.
%
%?Written?by:?Justin?Romberg?Caltech
%?Email:?jrom@acm.caltech.edu
%?Created:?October?2005
%

%?put?optimization?code?in?path?if?not?already?there
path（path?‘./Optimization‘）;

%?signal?length
N?=?512;

%?number?of?spikes?to?put?down
T?=?20;

%?number?of?observations?to?make
K?=?120;

%?random?+/-?1?signal
x?=?zeros（N1）;
q?=?randperm（N）;
x（q（1:T））?=?sign（randn（T1））;

%?measurement?matrix?=?random?projection
disp（‘Creating?measurment?matrix...‘）;
A?=?randn（KN）;
A?=?orth（A‘）‘;
disp（‘Done.‘）;
	
%?noisy?observations
sigma?=?0.005;
e?=?sigma*randn（K1）;
y?=?A*x?+?e;

%?initial?guess?=?min?energy
x0?=?A‘*y;

%?Dantzig?selection
epsilon?=?3e-3;
tic
xp?=?l1dantzig_pd（x0?A?[]?y?epsilon?5e-2）;
toc


%?large?scale
%?Afun?=?@（z）?A*z;
%?Atfun?=?@（z）?A‘*z;
%?tic
%?xp?=?l1dantzig_pd（x0?Afun?Atfun?y?epsilon?5e-2?50?1e-8?500）;
%?toc

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-04-26?08:59??l1magic\
?????文件???????12292??2011-04-26?08:59??l1magic\.DS_Store
?????目錄???????????0??2011-04-26?08:59??l1magic\Data\
?????文件????????6148??2011-04-26?08:59??l1magic\Data\.DS_Store
?????目錄???????????0??2011-04-26?17:30??__MACOSX\
?????目錄???????????0??2011-04-26?17:30??__MACOSX\l1magic\
?????目錄???????????0??2011-04-26?17:30??__MACOSX\l1magic\Data\
?????文件??????????82??2011-04-26?08:59??__MACOSX\l1magic\Data\._.DS_Store
?????文件???????65728??2008-01-15?12:10??l1magic\Data\boats.mat
?????文件???????65728??2008-01-15?12:10??l1magic\Data\camera.mat
?????文件?????????543??2008-01-15?12:10??l1magic\Data\RandomStates.mat
?????文件?????????955??2008-01-15?12:10??l1magic\l1dantzig_example.m
?????文件?????????644??2008-01-15?12:10??l1magic\l1decode_example.m
?????文件????????1003??2008-01-15?12:10??l1magic\l1eq_example.m
?????文件????????1114??2008-01-15?12:10??l1magic\l1qc_example.m
?????目錄???????????0??2011-04-26?08:59??l1magic\Measurements\
?????文件????????6148??2011-04-26?08:59??l1magic\Measurements\.DS_Store
?????目錄???????????0??2011-04-26?17:30??__MACOSX\l1magic\Measurements\
?????文件??????????82??2011-04-26?08:59??__MACOSX\l1magic\Measurements\._.DS_Store
?????文件?????????659??2008-01-15?12:10??l1magic\Measurements\A_f.m
?????文件?????????576??2008-01-15?12:10??l1magic\Measurements\A_fhp.m
?????文件?????????718??2008-01-15?12:10??l1magic\Measurements\At_f.m
?????文件?????????613??2008-01-15?12:10??l1magic\Measurements\At_fhp.m
?????文件?????????832??2008-01-15?12:10??l1magic\Measurements\LineMask.m
?????目錄???????????0??2011-04-26?08:59??l1magic\Notes\
?????文件????????6148??2011-04-26?08:59??l1magic\Notes\.DS_Store
?????目錄???????????0??2008-08-06?07:26??l1magic\Notes\Figs\
?????目錄???????????0??2008-08-06?07:25??l1magic\Notes\Figs\CVS\
?????文件?????????740??2008-01-15?12:10??l1magic\Notes\Figs\CVS\Entries
?????文件??????????18??2008-01-15?12:10??l1magic\Notes\Figs\CVS\Repository
?????文件??????????41??2008-01-15?12:11??l1magic\Notes\Figs\CVS\Root
............此處省略50個文件信息