adfig12.m

老外写的小波变换的工具箱

% adfig12 -- Adapt Figure 12: Simulating the behavior of various threshold rules
%
% Here we compare the behavior of several schemes for threshold
% choice, when the noise is Normal(0,1). Several Different degrees
% of sparsity are studied.
%
% (Panel a) Choice by minimizing pure SURE criterion.
% (Panel b) Choice by fixed sqrt{2 log(n)} criterion.
% (Panel c) Choice by Hybrid of (a) and (b).
% (Panel d) Choice by Hybrid on random half-samples.
%
NProb=1024; M=25;
rand('seed',0);
%
   EvalSure
   EvalFix
   EvalHybrid
   EvalRigor
%
ax = [0 .3 0 1];
%clf;
versaplot(221,SureRecords(:,2),SureRecords(:,3).^2,'o',...
    '12 (a) SURE Threshold',ax,[]);
xlabel('Epsilon')
ylabel('root MSE')
versaplot(222,FixRecords(:,2),FixRecords(:,3).^2,'.',...
    '12 (b) Fixed Threshold',ax,[]);
xlabel('Epsilon')
ylabel('root MSE')
versaplot(223,HybridRecords(:,2),HybridRecords(:,3).^2,'*',...
    '12 (c) Hybrid(*) Threshold',ax,[]);
xlabel('Epsilon')
ylabel('root MSE')
versaplot(224,PlusRecords(:,2),PlusRecords(:,3).^2,'+',...
    '12 (d) Hybrid(+) Threshold',ax,[]);
xlabel('Epsilon')
ylabel('root MSE')
    
    

 
 
%
%  Part of Wavelab Version 850
%  Built Tue Jan  3 13:20:41 EST 2006
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%  For Copying permissions see COPYING.m
%  Comments? e-mail [e-mail]