Error : Subscripted assignment dimension mismatch.

12 次查看（过去 30 天）
souha abdalah
souha abdalah 2016-4-18
Hello everyone, I want to classify a list of 5 test images using the library LIBSVM with a strategy 'one against all' in order to obtain probabilities for each class. the used code is bellow :
load('D:\xapp.mat');
load('D:\xtest.mat');
load('D:\yapp.mat');%%matrix contains true class of images yapp=[641;645;1001;1010;1100]
load('D:\ytest.mat');%%matrix contains unlabeled class of test set ytest=[1;2;3;4;5]
numLabels=max(yapp);
numTest=size(ytest,1);
%# train one-against-all models
model = cell(numLabels,1);
for k=1:numLabels
model{k} = svmtrain(double(yapp==k),xapp, ['-c 1000 -g 10 -b 1 ']);
end
%# get probability estimates of test instances using each model
prob = zeros(numTest,numLabels);
for k=1:numLabels
[~,~,p] = svmpredict(double(ytest==k), xtest, model{k}, '-b 1');
prob(:,k) = p(:,model{k}.Label==1); %# probability of class==k
end
%# predict the class with the highest probability
[~,pred] = max(prob,[],2);
acc = sum(pred == ytest) ./ numel(ytest) %# accuracy
I obtain this error :
Model does not support probabiliy estimates
Subscripted assignment dimension mismatch.
Error in comp (line 98)
prob(:,k) = p(:,model{k}.Label==1); %# probability of class==k
please, help me to solve this error and thanks in advance

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Statistics and Machine Learning Toolbox 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by