How to use fitcsvm in matlab classifications Brain tumor Mr image?(Benign,Malignant)

Question

Ahmet Gürbüz 2017-12-16

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/373257-how-to-use-fitcsvm-in-matlab-classifications-brain-tumor-mr-image-benign-malignant

评论： Saad Rana 2022-6-24

anakodlar.m

load egitimseti.mat xdata = meas; group = label;

 %svmStruct1 = svmtrain(xdata,group,'kernel_function', 'linear');
 %Train the SVM Classifier
SVMModel= fitcsvm(meas,group,'KernelFunction','rbf','BoxConstraint',Inf);
 sv = SVMModel.SupportVectors;
 figure,
gscatter(xdata(:,1),xdata(:,2),group);
hold on
plot(sv(:,1),sv(:,2),'ko','MarkerSize',10)
legend('MALIGNANT','BENIGN','Support Vector')
hold off
 %species = svmclassify(svmStruct1,feat,'showplot',false

%x = fitcdiscr(xdata,group); label= predict(SVMModel,xdata);

%data1 = [meas(:,1),meas(:,2)]; %newfeat = [feat(:,1),feat(:,2)];

%close all

%SVMModel2=fitcsvm(data1,group); %label2=predict(SVMModel2,newfeat);

%En yüksek doğruluk(accurasy) icin trainset

data = meas; groups = ismember(label,'BENIGN'); groups = ismember(label,'MALIGNANT'); [train,test] = crossvalind('HoldOut',groups);%test ve egitim icin veriler karıstırıldı.0 ve 1 cp = classperf(groups);

%svmStruct = svmtrain(data(train,:),groups(train),'showplot',false,'kernel_function','linear');%yapi olustu%r %classes = svmclassify(svmStruct,data(test,:),'showplot',false);%svm ile sınıflandır SVMModelson=fitcsvm(data(train,:),groups(train)); class=predict(SVMModelson,data(test,:));

classperf(cp,class,test);

indicies = crossvalind('Kfold',label,10); cp = classperf(label);%for ;

    %svmStruct = svmtrain(xdata(train,:),group(train),'boxconstraint',Inf,'showplot',false,'kernel_function','rbf');
    %classes = svmclassify(svmStruct,xdata(test,:),'showplot',false);
    SVMModelnormalize=fitcsvm(xdata(train,:),group(train));
    classes=predict(SVMModelnormalize,xdata(test,:));
    classperf(cp,classes,test);
%end

%çapraz geçerlilik sonucu

Accuracy = cp.CorrectRate*100; sprintf("Dogruluk oranı %d dir",Accuracy);

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lamis ke 2020-8-7

same question how to create load egitimseti.mat xdata = meas; group = label;

Saad Rana 2022-6-24

在 MATLAB Online 中打开

The code gives an error for

load egitimseti.mat 
xdata = meas;
group = label;

can you help me to create .mat file?

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Answer 1

Bernhard Suhm 2017-12-20

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/373257-how-to-use-fitcsvm-in-matlab-classifications-brain-tumor-mr-image-benign-malignant#answer_297071

Can you illustrate what your data looks like, and where you get what type of error? And which release of MATLAB are you using? Looks like you were on an old release at first, since svmtrain has long been depracated.