資源簡介
基于極限學習機的不平衡數據集分類,性能極好,且速度較快
代碼片段和文件信息
function?[TestingAccuracytest_gmean]?=?Simplified_LSSVM(TrainingData_File?TestingData_Filesigma2C)
%%%%%%%%%%%?Load?training?file
TrainDataArray?=?load?(TrainingData_File);
T?=?TrainDataArray(:size(TrainDataArray2));
Y?=?TrainDataArray(:1:size(TrainDataArray2)?-?1);
train_data?=?[T?Y];
clear?TrainDataArray;???
%%%%%%%%%%%?Load?testing?file
TestDataArray?=?load?(TestingData_File);
T?=?TestDataArray(:size(TestDataArray2));
Y?=?TestDataArray(:1:size(TestDataArray2)?-?1);
test_data?=?[T?Y];
clear?TestDataArray;???
%%%%%%%%%%%?Load?training?dataset
%train_data?=?load(TrainingData_File);
T=train_data(:1)‘;
P=train_data(:2:size(train_data2))‘;
clear?train_data;???????????????????????????????????%???Release?raw?training?data?array
%%%%%%%%%%%?Load?testing?dataset
%test_data?=?load(?TestingData_File?);
TV.T=test_data(:1)‘;
TV.P=test_data(:2:size(test_data2))‘;
clear?test_data;????????????????????????????????????%???Release?raw?testing?data?array
NumberofTrainingData=size(P2);
NumberofTestingData=size(TV.P2);
%NumberofInputNeurons=size(P1);
%%%%%%%%%%%%?Preprocessing?the?data?of?classification
????sorted_target=sort(cat(2TTV.T)2);
????label=zeros(11);???????????????????????????????%???Find?and?save?in?‘label‘?class?label?from?training?and?testing?data?sets
????label(11)=sorted_target(11);
????j=1;
????for?i?=?2:(NumberofTrainingData+NumberofTestingData)
????????if?sorted_target(1i)?~=?label(1j)
????????????j=j+1;
????????????label(1j)?=?sorted_target(1i);
????????end
????end
????number_class?=?j;
????NumberofOutputNeurons?=?number_class;
%%%%%%%%%%?Processing?the?targets?of?training
????temp_T=zeros(NumberofOutputNeurons?NumberofTrainingData);
????for?i?=?1:NumberofTrainingData
????????for?j?=?1:number_class
????????????if?label(1j)?==?T(1i)
????????????????break;?
????????????end
????????end
????????temp_T(ji)=1;
????end
????T?=?temp_T?*?2?-?1;
%%%%%%%%%%?Processing?the?targets?of?testing
????temp_TV_T=zeros(NumberofOutputNeurons?NumberofTestingData);
????for?i?=?1:NumberofTestingData
????????for?j?=?1:number_class
????????????if?label(1j)?==?TV.T(1i)
????????????????break;?
????????????end
????????end
????????temp_TV_T(ji)=1;
????end
TV.T?=?temp_TV_T?*?2?-?1;
??????????????????????????????????????????????%???end?if?of?Elm_Typ
%%%%%%%%%%%?Calculate?weights?&?biases
%?start_time_train=cputime;
tic;
n?=?size(T2);
Omega_train?=?kernel_matrix(P‘‘RBF_kernel‘?sigma2);
%OutputWeight?=?(?(?W?*?Omega_train?+?speye(n)/C?)?\?(?W?*?T‘?)?);?
OutputWeight?=?(?(?Omega_train?+?speye(n)/C?)?\?(??T‘?)?);?
?%OutputWeight=mtimesx(H((mtimesx(H‘H)+speye(n)/C)\T‘));?
?%OutputWeight=inv(H?*?H‘)?*?H?*?T‘;?????????????????????????%?faster?implementation
%?end_time_train=cputime;
%?TrainingTime=end_time_train-start_time_train?????;???%???Calculate?CPU?time?(seconds)?spent?for?training?ELM
%TrainingTime=toc;
%%%%%%%%%%%?Calculate?the?training?accu
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件???????2536??2013-06-24?09:37??kernel_matrix.m
?????文件???????1325??2013-06-28?13:42??TEST_kernel_imbalance.m
?????文件????????899??2013-06-26?19:15??TestELM_kernel.m
?????文件???????4896??2013-06-28?09:53??ELM_kernel.m
-----------?---------??----------?-----??----
?????????????????9656????????????????????4
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