%?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??2009-05-20?16:07??caa\
?????目錄???????????0??2009-08-05?08:54??caa\caa\
?????文件????????6148??2007-08-03?02:53??caa\caa\.DS_Store
?????文件??????????82??2007-08-03?02:53??caa\caa\._.DS_Store
?????目錄???????????0??2009-05-20?16:07??caa\caa\Data\
?????文件???????65728??2005-11-04?08:42??caa\caa\Data\boats.mat
?????文件???????65728??2005-11-04?06:49??caa\caa\Data\camera.mat
?????文件?????????543??2005-11-21?13:44??caa\caa\Data\RandomStates.mat
?????文件?????????955??2007-08-02?03:15??caa\caa\l1dantzig_example.m
?????文件?????????644??2007-08-03?02:47??caa\caa\l1decode_example.m
?????文件????????1003??2007-08-02?22:19??caa\caa\l1eq_example.m
?????文件??????356285??2009-08-05?17:29??caa\caa\l1magic_notes.pdf
?????文件????????1114??2007-08-03?02:48??caa\caa\l1qc_example.m
?????目錄???????????0??2009-05-20?16:12??caa\caa\Measurements\
?????文件?????????718??2005-11-04?08:42??caa\caa\Measurements\At_f.m
?????文件?????????613??2005-11-10?01:01??caa\caa\Measurements\At_fhp.m
?????文件?????????659??2005-11-04?08:42??caa\caa\Measurements\A_f.m
?????文件?????????576??2005-11-10?01:01??caa\caa\Measurements\A_fhp.m
?????文件?????????832??2005-11-10?01:01??caa\caa\Measurements\LineMask.m
?????目錄???????????0??2009-05-20?16:07??caa\caa\Optimization\
?????文件????????1693??2007-08-01?23:23??caa\caa\Optimization\cgsolve.m
?????文件????????1731??2007-08-01?23:26??caa\caa\Optimization\cgsolve2.m
?????文件????????7016??2007-08-03?02:44??caa\caa\Optimization\l1dantzig_pd.m
?????文件????????5068??2007-08-03?02:44??caa\caa\Optimization\l1decode_pd.m
?????文件????????6002??2007-08-03?02:43??caa\caa\Optimization\l1eq_pd.m
?????文件????????3527??2007-08-02?03:47??caa\caa\Optimization\l1qc_logbarrier.m
?????文件????????4413??2007-08-03?02:42??caa\caa\Optimization\l1qc_newton.m
?????文件????????3624??2007-08-03?02:25??caa\caa\Optimization\tvdantzig_logbarrier.m
?????文件????????5825??2007-08-03?02:46??caa\caa\Optimization\tvdantzig_newton.m
?????文件????????3506??2007-08-02?22:47??caa\caa\Optimization\tveq_logbarrier.m
?????文件????????5523??2007-08-03?02:41??caa\caa\Optimization\tveq_newton.m
............此處省略8個文件信息