%%
%?File?Name:?AdaBoost
%?This?is?the?implementation?of?the?ada?boost?algorithm.
%?Parameters?-?very?easy?to?guess?by?name...
%?Return?values:?i?-?hypothesis-index??vector.
%????????????????t?-?threshhols?vector
%????????????????beta?-?weighted?beta.
%%
function?boosted=adaBoost（traintrain_labelcycles）
????disp（‘running?adaBoost?algorithm‘）;
????d=size（train）;
	distribution=ones（1d（1））/d（1）;
	error=zeros（1cycles）;
	beta=zeros（1cycles）;
	label=（train_label（:）>=5）;%?contain?the?correct?label?per?vector
	for?j=1:cycles
????????if（mod（j10）==0）
????????????disp（[jcycles]）;
????????end
	[it]=weakLearner（distributiontrainlabel）;
????error（j）=distribution*abs（label-（train（:i）>=t））;
????beta（j）=error（j）/（1-error（j））;
????boosted（j:）=[beta（j）it];
????distribution=distribution.*?exp（log（beta（j））*（1-abs（label-（train（:i）>=t））））‘;
????distribution=distribution/sum（distribution）;
end
????
????

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-11-18?14:42??Adaboost\
?????文件?????????907??2015-10-28?16:16??Adaboost\adaBoost.m
?????文件?????????757??2015-10-28?16:16??Adaboost\getError.m
?????文件????????2030??2015-10-28?16:16??Adaboost\runAdaBoosting.m
?????文件??????????97??2015-10-28?16:16??Adaboost\start.m
?????文件??????514824??2015-10-28?16:16??Adaboost\usps.mat
?????文件?????????310??2015-10-28?16:16??Adaboost\weakLearner.m