%==================================================================
%---?Backward?Feature?selection?by?Correst?Classification?Rate?----
%---------------???Main?Function??---------------------------------
%==================================================================

%?function?[ResultMat]?=?BackSel_main?

%?Matlab?function?of?the?two?backward?selection?algorithms:
%?a）?Sequential?Backward?Selection??????????????（SBS）
%?b）?Sequential?Floating?Backward?Selection?????（SFBS）
%?Methods?are?improved?by?a?t-test?and?a?Information?Loss??
%?evaluation.?The?criterion?in?feature?selection?is?the?correct?
%?classification?achieved?by?the?Bayes?classifier?when?each?
%?probability?density?function?is?modeled?as?single?Gaussian.?

%?Main?function:?
%?-?The?feature?selection?method?and?our?improvement?on?sequential
%???selection?algorithms
%?Secondary?function:?BayesClassMVGaussPDFs
%?-?Bayes?Classifier?with?Gaussian?modeled?PDFs?
%???using?Crossvalidation?or?Resubstitution?methods.

%???Copyright?2003-2009?Dimitrios?Ververidis?AIIA?Lab.
%???$Revision:?5.1.4?$??$Date:?27/01/2009?$

%?REFERENCES:
%?[1]?D.?Ververidis?and?C.?Kotropoulos?“Fast?and?accurate?feature?
%?????subset?selection?applied?into?speech?emotion?recognition“?
%?????Els.?Signal?Process.?vol.?88?issue?12?pp.?2956-2970?2008.
%?[2]?D.?Ververidis?and?C.?Kotropoulos?“Optimum?feature?subset?
%?????selection?with?respect?to?the?information?loss?of?the?
%?????Mahalanobis?distance?in?high?dimensions“?under?preparation?
%?????2009.

?function?[ResultMat?ConfMatFinal?Tlapse?OptimumFeatureSet...
????OptimumError]?=?BackSel_main（DatasetToUse?FSSettings?handles）?
?format?short?g

%?INPUT
%?DatasetToUse:???STRING?（‘finalvecXXX‘?where?XXX=Your?dbname）

%?FSSettings;
ErrorEstMethod??????=?FSSettings.ErrorEstMethod;
FSMethod????????????=?FSSettings.FSMethod;
MahalInfoLossMethod?=?FSSettings.MahalInfoLossMethod;
GammaParam??????????=?FSSettings.GammaParam;
PercTest????????????=?FSSettings.PercTest;
ConfMatSwitch???????=?FSSettings.ConfMatSwitch;
TotalNStepsThres????=?FSSettings.TotalNStepsThres;
LogViewOfIntStep????=?FSSettings.LogViewOfIntStep;


%?ErrorEstMethod:?Error?Estimation?Method?（STRING）??
%?????????????????Values:?‘Standard‘???stands?for?cross-validation
%?????????????????????????‘ProposedA‘??stands?for?cross-validation??
%?????????????????????????‘ProposedAB‘?stands?for?cross-validation?
%??????????????????????????????????????（see?paper?[1]）???
%?????????????????????????‘Resubstitution‘?Train?and?Test?sets?are??
%????????????????????????????????????????the?whole?data?set

%?MahalInfoLossMethod:?（Binary）?To?use?Limits?of?CCR?wrt?
%??????????????????????Dimensionality?found?with?Mahalanobis?Info?
%??????????????????????Loss?（see?[2]）???（DEFAULT?=?1）


%?FSMethod??:?（STRING）?Feature?Selection?method??（‘SFFS‘‘SFS‘）
%??????????????????????????????????????????????（DEFAULT?=?‘SFS‘）

%?PercTest:?（Integer）?1/PercTest?of?data?is?used?for?testing.?
%???????????Remain?is?used?for?training?the?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1369??2010-08-29?04:04??license.txt
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\
?????文件???????23988??2009-03-07?14:01??Version_5.1.8_Out\BackSel_main.m
?????文件????????9497??2009-02-01?19:51??Version_5.1.8_Out\BayesClassMVGaussPDFs.m
?????文件????????2371??2009-01-17?17:38??Version_5.1.8_Out\BayesClassValidationSet.m
?????文件????????4422??2009-02-20?12:45??Version_5.1.8_Out\CalcInfoLoss.m
?????文件????????7915??2009-01-09?12:35??Version_5.1.8_Out\CCRForOptSet.m
?????文件????????5432??2009-02-26?19:44??Version_5.1.8_Out\DataLoadAndPreprocess.m
?????文件???????19208??2009-03-07?14:11??Version_5.1.8_Out\DEMO.fig
?????文件???????12433??2009-03-07?14:56??Version_5.1.8_Out\DEMO.m
?????文件???????20375??2009-03-07?14:01??Version_5.1.8_Out\ForwSel_main.m
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\Help\
?????文件???????69120??2009-03-05?13:29??Version_5.1.8_Out\Help\AuthorsVerveridis.doc
?????文件???????33198??2009-03-05?14:07??Version_5.1.8_Out\Help\AuthorsVerveridis.htm
?????文件????????2487??2006-04-18?13:32??Version_5.1.8_Out\Help\dimsmall.jpg
?????文件??????522240??2009-03-05?13:25??Version_5.1.8_Out\Help\Readme.doc
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\Help\Readme.files\
?????文件?????????196??2009-03-05?13:26??Version_5.1.8_Out\Help\Readme.files\filelist.xml
?????文件??????488380??2009-03-05?13:26??Version_5.1.8_Out\Help\Readme.files\image001.jpg
?????文件???????53345??2009-03-05?13:26??Version_5.1.8_Out\Help\Readme.files\image002.jpg
?????文件???????18676??2009-03-05?13:26??Version_5.1.8_Out\Help\Readme.htm
?????文件??????511517??2009-02-24?00:24??Version_5.1.8_Out\Help\Verver_ElsSigPro_08.pdf
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\icons\
?????文件????????9544??2008-02-04?15:34??Version_5.1.8_Out\icons\PlayBlueIcon.tif
?????文件????????9596??2008-02-04?15:36??Version_5.1.8_Out\icons\StopBlueIcon.tif
?????文件????????8192??2009-01-14?19:13??Version_5.1.8_Out\icons\Thumbs.db
?????文件????????2938??2009-02-04?16:31??Version_5.1.8_Out\LoadFromTXTfiles.m
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\LowLevelFunctions\
?????文件????????1105??2008-03-24?16:38??Version_5.1.8_Out\LowLevelFunctions\FactorGamma.m
?????文件????????1391??2009-01-12?15:51??Version_5.1.8_Out\LowLevelFunctions\ShowConfMat.m
?????目錄???????????0??2014-03-12?14:05??Version_5.1.8_Out\PatTargMatrices\
............此處省略7個(gè)文件信息