资源简介
EM算法,基于贝叶斯的,matlab程序

代码片段和文件信息
%% Adaptive Basis Reconstruction %%
% A.Kucukelbir 05-Jan-2011
% Last Revision: 3-Mar-2012
%% Initialize MATLAB and Set Parameters
warning(‘off‘‘Images:imshow:magnificationMustBeFitForDockedFigure‘);
fig_count = 1;
% Check MATLABPOOL state and initiate multi-core processing
% Note: configuration ‘local‘ should be properly configured for YOUR machine
if(matlabpool(‘size‘)==0)
matlabpool local
end
% Set path to utilities
path(‘utils‘path);
% Nesterov Parameters
nest_plot_flag = 0; % Plot intermediate slices of iterations of Nesterov loop
basis = ‘s‘; % ‘s‘ for swt16 frame ‘w‘ for regular wavelet basis
thr_type = 0; % 0 Soft Threshold 1 Hard Threshold
W = ‘coif3‘; % Wavelet family
W_lev = 2; % Wavelet tree depth. Note: if basis = ‘s‘ then W_lev must = 2.
nesterov_iter_lim = 30; % Max no. of iterations for Nesterov
nesterov_stop_lim = 0.02; % Stopping threshold for Nesterov
%% Load Example Inputs
% proj: the simulated class means
% data_axes: the projection directions stored as vectors in 3D
% ctfs: the CTF associated with each class mean (with some error)
% maskR: integer value of spherical mask used during
load(‘exampleInputs3QD7simulated.mat‘);
slice = ceil(size(proj1)/2);
%% Determine STEP SIZE for Nesterov
% Note: this will depend on the size of your dataset
mu = 1e-3;
%% Run Adaptive Basis Reconstruction using Nesterov‘s Method
tic
x_est = reconstruct_by_nesterov_w_ctf(...
proj data_axes ctfs maskR...
basis ...
W W_levthr_type...
mu nesterov_iter_lim nesterov_stop_lim fig_count slice nest_plot_flag);
toc
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2012-04-05 15:11 adaptiveBasis\
文件 2914650 2012-04-04 20:16 adaptiveBasis\3QD7reconstruction.mat
文件 1749 2012-04-04 20:14 adaptiveBasis\adaptiveBasisReconstructionExample.m
文件 5102052 2012-04-04 20:05 adaptiveBasis\exampleInputs3QD7simulated.mat
文件 627 2012-04-05 15:09 adaptiveBasis\README.txt
目录 0 2012-04-05 15:07 adaptiveBasis\utils\
文件 1147 2012-04-02 15:27 adaptiveBasis\utils\get_stat_grad_with_ctf.m
文件 1143 2012-04-02 15:26 adaptiveBasis\utils\get_wavelet_grad_with_ctf.m
文件 3519 2012-02-14 20:56 adaptiveBasis\utils\iswt3.m
文件 3815 2012-04-05 15:13 adaptiveBasis\utils\mex_back_project.c
文件 3676 2012-04-05 15:13 adaptiveBasis\utils\mex_forward_project.c
文件 448 2012-04-02 15:26 adaptiveBasis\utils\prox_regularizer.m
文件 4930 2012-04-05 15:12 adaptiveBasis\utils\reconstruct_by_nesterov_w_ctf.m
文件 2575 2012-02-14 20:56 adaptiveBasis\utils\swt16dec3.m
文件 4765 2012-02-14 20:56 adaptiveBasis\utils\swt16rec3.m
文件 6053 2012-02-14 20:56 adaptiveBasis\utils\swt3.m
文件 1335 2012-04-05 15:16 license.txt
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