function?[test_targets?E]?=?ada_boost（train_patterns?train_targets?test_patterns?params）

%?Classify?using?the?AdaBoost?algorithm
%?Inputs:
%?	train_patterns	-?Train?patterns
%	train_targets	-?Train?targets
%???test_patterns???-?Test??patterns
%	Params	-?[NumberOfIterations?Weak?Learner?Type?Learner‘s?parameters]
%
%?Outputs
%	test_targets	-?Predicted?targets
%???E???????????????-?Errors?through?the?iterations
%
%?NOTE:?Suitable?for?only?two?classes
%

[k_max?weak_learner?alg_param]?=?process_params（params）;

[NiM]			=?size（train_patterns）;
W			?	=?ones（1M）/M;
IterDisp		=?10;

full_patterns???=?[train_patterns?test_patterns];
test_targets????=?zeros（1?size（test_patterns2））;

%Do?the?AdaBoosting
for?k?=?1:k_max
???%Train?weak?learner?Ck?using?the?data?sampled?according?to?W:
???%...so?sample?the?data?according?to?W
???randnum?=?rand（1M）;
???cW	???=?cumsum（W）;
???indices?=?zeros（1M）;
???for?i?=?1:M
??????%Find?which?bin?the?random?number?falls?into
??????loc?=?max（find（randnum（i）?>?cW））+1;
??????if?isempty（loc）
?????????indices（i）?=?1;
??????else
?????????indices（i）?=?loc;
??????end
???end
???
???%...and?now?train?the?classifier
???Ck?	=?feval（weak_learner?train_patterns（:?indices）?train_targets（indices）?full_patterns?alg_param）;

???%Ek?<-?Training?error?of?Ck?
???E（k）?=?sum（W.*（Ck（1:M）?~=?train_targets））;
???
???if?（E（k）?==?0）
??????break
???end
???
???%alpha_k?<-?1/2*ln（1-Ek）/Ek）
???alpha_k?=?0.5*log（（1-E（k））/E（k））;
???
???%W_k+1?=?W_k/Z*exp（+/-alpha）
???W??=?W.*exp（alpha_k*（xor（Ck（1:M）train_targets）*2-1））;
???W??=?W./sum（W）;
???
???%Update?the?test?targets
???test_targets??=?test_targets?+?alpha_k*（2*Ck（M+1:end）-1）;
???
???if?（k/IterDisp?==?floor（k/IterDisp））
??????disp（[‘Completed?‘?num2str（k）?‘?boosting?iterations‘]）
???end
???
end

test_targets?=?test_targets?>?0;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????9682107??2016-09-21?15:24??pattern?classification.pdf
?????目錄???????????0??2016-09-26?15:06??PatternClassification_Solution\
?????文件?????2812830??2016-09-26?15:03??PatternClassification_Solution\Duda-problemsolutions.pdf
?????目錄???????????0??2016-09-26?15:06??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\
?????目錄???????????0??2016-09-26?15:11??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類教材\
?????文件??????622735??2011-04-28?10:46??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類教材\Computer?manual?in?MATLAB?to?accompany?Pattern?Classification.pdf
?????目錄???????????0??2016-09-26?15:06??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\
?????文件??????952782??2002-05-20?08:36??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\About.bmp
?????文件????????1892??2003-06-26?20:48??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Ada_Boost.m
?????文件????????2815??2003-06-10?20:38??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\ADDC.m
?????文件????????4439??2003-08-31?20:47??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\AGHC.m
?????文件????????3397??2003-06-26?21:06??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_Batch.m
?????文件????????5308??2003-06-26?21:06??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_CGD.m
?????文件????????6494??2003-02-22?20:26??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_Quickprop.m
?????文件????????5029??2003-02-22?20:42??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_Recurrent.m
?????文件????????3334??2003-02-22?20:46??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_SM.m
?????文件????????3117??2003-02-22?20:50??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Backpropagation_Stochastic.m
?????文件????????1421??2003-03-05?19:07??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Balanced_Winnow.m
?????文件????????3343??2003-04-02?20:27??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Bayesian_Model_Comparison.m
?????文件?????????588??2001-12-27?09:56??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Bhattacharyya.m
?????文件????????3248??2003-03-09?22:07??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\BIMSEC.m
?????文件????????5599??2003-06-10?20:37??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\C4_5.m
?????文件?????????905??2003-02-22?21:13??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\calculate_error.m
?????文件?????????756??2003-02-18?17:57??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\calculate_region.m
?????文件????????3721??2003-11-06?22:06??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\CART.m
?????文件?????????846??2003-02-22?21:36??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\CARTfunctions.m
?????文件????????5527??2003-02-22?21:45??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Cascade_Correlation.m
?????文件?????????902??2001-12-27?10:15??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Chernoff.m
?????文件????????2745??2003-11-08?22:59??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\Classification.txt
?????文件????????1995??2003-02-22?21:48??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\classification_error.m
?????文件???????19454??2003-09-21?21:04??PatternClassification_Solution\Pattern?Classification?2nd?edition?（代碼和手冊）\模式分類（Matlab程序）\classifier.m
............此處省略153個文件信息