%?applyClassifier（examplesclassifier）
%
%?Apply?a?learnt?classifier?（from?trainClassifier）?to?the?new?examples?and
%?get?the?scores?for?classification.
%
%?This?function?outputs?a?matrix?of?scores?of?the?labelling?over?all?the
%?classes?present?in?the?test?set.?The?columns?of?that?matrix
%?correspond?to?the?labels?sorted?in?increasing?order?of?their
%?numeric?values
%?（e.g.?columns?1-6?would?be?labels?2-7?in?the?sixcategories?study
%?which?has?6?classes）
%
%?The?specific?scoring?measure?will?depend?on?the?classifier?used
%?see?classifier?code?for?details
%
%?Input:
%??-?examples?a?matrix?of?real?numbers?with?dimenstion?of?#examples*#features
%??-?classifier?（learnt?by?trainClassifier）
%
%?Output:
%??-?score?a?matrix?of?real?number?with?dimension?of?#examples*#classes
%????Each?row?contains?[score（1st?class|data）?...?score（kth?class|data）]
%
%?Dependencies:
%??-?serious?dependence?on?the?“classifier“?format?produced?by?trainClassifier.
%
%?Example:
%??-?[predictions]?=?applyClassifier（examplesclassifier）;
%
%?History:
%??-?Oct072005?Wei?-?redocument
%??-?10?Mar?05?-?fpereira?-?adapted?from?previous?code



function?[scores]?=?applyClassifier（?varargin?）

%
%?Process?parameters
%?

l?=?length（varargin）;
if?l???
examples??????????=?varargin{1};
trainedClassifier?=?varargin{2};

classifierType???=?trainedClassifier.classifier;
classifierParams?=?trainedClassifier.classifierParameters;
models???????????=?trainedClassifier.models;

lastpos???????????=?size（models1）;%返回5
trainingSetInfo???=?trainedClassifier.trainingSetInfo;
sortedLabelValues?=?trainingSetInfo.sortedLabelValues;%??12
nClasses??????????=?length（sortedLabelValues）;
nFeatures?????????=?size（examples2）;
nExamples?????????=?size（examples1）;
??
%?This?matrix?will?keep?the?prediction?scores?and?feature?relevance?values
%?corresponding?to?each?example
%?-?scores?is?a?#examples*#classes?matrix
%???（each?line?is?scores?for?one?example?in?label?value?order）
%?-?cFeatureContribution?is?a?cell?array?where?each?cell?contains
%???a?featureContribution?map?for?a?class
%???A?featureContribution?map?is?a?#examples*#features?matrix
??
scores????????????=?zeros（nExamplesnClasses）;
cFeatureContribution?=?cell（nClasses1）;
cFeatureLogProbs??=?cell（nClasses1）;
????
%
%下面是針對不同類型的方法，執(zhí)行的函數(shù)體，貝葉斯的只是很小一部分
%?run?the?classifier?-?eventually?we?will?encapsulate?this?and
%?the?code?for?different?kinds?of?classifier?for?now?a?large?switch?statement

trainingSetInfo?=?models{nClasses+2};%和上面的賦值內(nèi)容一樣

priors??????????=?trainingSetInfo.classPriors;%先驗概率
??
switch?classifierType

??%
??%?Logistic?regression
??%
??
??
?case?{‘logisticRegression2‘}

??%?discriminative?model?weights;
??W?=?models{nClasses+1};
??
??tmp?=?models{nClasses+3}{1};?%?parameters?used?to?train此時是空的
??transform?=?tmp{3};?lambda?=?tmp{2};?eta?=?tmp{1};

??switch?transform
????
???case?{‘none‘}
????%?vanilla?logistic?regression
????tmp????=?exp（[ones（nExamples1）examples]?*?W）;
????scores?=?tmp?./?r

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件?????460338??2012-07-18?22:11??《機器學習》課程設計論文.doc

?????文件??????19258??2010-03-05?22:21??程序\applyClassifier.m

?????文件??????16513??2010-03-03?22:45??程序\classifierBayes.m

?????文件????????874??2005-10-13?20:17??程序\computeCorrelation.m

?????文件???????2777??2010-03-04?17:01??程序\idmToExamples_condLabel.m

?????文件???????1059??2005-10-13?20:17??程序\mergeExamples.m

?????文件???????3537??2005-10-13?20:17??程序\mri_mergeIDM.m

?????文件???????9123??2010-03-05?11:17??程序\summarizePredictions.m

?????文件???????2244??2010-03-10?03:44??程序\TestROI.m

?????文件???????9718??2010-03-04?00:01??程序\trainClassifier.m

?????文件???????2129??2005-10-13?20:17??程序\transformIDM_avgROIVoxels.m

?????文件???????3115??2005-10-13?20:17??程序\transformIDM_avgVoxels.m

?????文件???????5810??2005-10-13?20:17??程序\transformIDM_selectActiveVoxact.m

?????文件???????1195??2005-10-13?20:17??程序\transformIDM_selectROIVoxels.m

?????文件????????840??2005-10-13?20:17??程序\transformIDM_selectTimewindow.m

?????文件????????968??2005-10-13?20:17??程序\transformIDM_selectTrials.m

?????文件???????8765??2005-10-13?20:17??程序\transformIDM_smoothingKR.m

?????目錄??????????0??2012-07-18?22:12??程序

-----------?---------??----------?-----??----

???????????????548263????????????????????18