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大小: 2KB文件類型: .zip金幣: 1下載: 0 次發(fā)布日期: 2021-01-10
- 語言: Matlab
- 標(biāo)簽:
資源簡介
Sparse Bayesian Learning，Basis Selection，稀疏貝葉斯學(xué)習(xí)算法，壓縮感知，matlab仿真
代碼片段和文件信息
function?[?w?]?=?sblBasisSel（?t?phi?nEmItr?）
%?Implements?Sparse?Bayesian?Learning?Basis?Selection?for?overcomplete
%?dictionaries.
%
%?References:?
%?Tipping?M.?E.?（2001）.?Sparse?Bayesian?learning?and?the?relevance?vector
%?machine.?Journal?of?Machine?Learning?Research??1?211?44.
nObs?=?length（t）;
nBasis?=?size（phi2）;
%?Initialize?Parameters
nextItrSigmaSq?=?1;?%?noise?variance
nextItrGamma?=?eye（nBasis）;?%?prior?hyperparameters?gamma?=?diag{hyperparams}
%?Evidence?Approximation?using?EM
for?itEM?=?1:nEmItr?%?TODO?:?add?covergence?criteria
????%?Assign?new?values?to?paramters
????gamma?=?nextItrGamma;
????sigmaSq?=?nextItrSigmaSq;
????%?Compute?new?parameters
????cov_t?=?sigmaSq*eye（nObs）?+?phi*gamma*phi‘;
????cov_w?=?gamma?-?gamma*phi‘/cov_t*phi*gamma;
?????屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2008-02-01?19:13??sblDecoder\
?????文件????????1091??2012-06-04?20:03??sblDecoder\sblBasisSel.m
?????文件????????1503??2012-06-04?20:10??sblDecoder\sblDecode.m
?????文件????????1090??2012-06-04?20:58??sblDecoder\test.m
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