how to improve accuracy in matlab.?

Question

Ronak Patel 2020-5-30

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/538619-how-to-improve-accuracy-in-matlab

编辑： vaibhav mishra 2020-6-30

Here code below attachment its my accuracy image i want accuracy 90% above can u help how to improve my accuracy.?

clear
clc
imds = imageDatastore('E:\MATLAB\coursework\dataset\BloodCellDataSet','IncludeSubfolders',true, ...
    'FileExtensions','.jpeg','LabelSource','foldernames');
figure;
perm = randperm(9957,20); 
for i = 1:20
subplot(4,5,i);
%imshow(imds.Files{i});
imshow(imds.Files{perm(i)});
end
label = countEachLabel(imds);
minsetcount = min(imds.countEachLabel{:,2});
trainingNumfiles = round(minsetcount);
rng(1);
[imdsTrain,imdsValidation] = splitEachLabel(imds,trainingNumfiles,'randomize');
inputSize=[240 320 3];
netLayers = [
    imageInputLayer(inputSize)
    convolution2dLayer(3,8,'Padding','same')
    batchNormalizationLayer
    reluLayer
    
    maxPooling2dLayer(2,'Stride',2)
    convolution2dLayer(3,16,'Padding','same')
    batchNormalizationLayer
    reluLayer
    
    maxPooling2dLayer(2,'Stride',2)
    convolution2dLayer(3,32,'Padding','same')
    batchNormalizationLayer
    reluLayer
    
    fullyConnectedLayer(4)
    softmaxLayer
    classificationLayer];
options = trainingOptions('sgdm', ... 
    'InitialLearnRate',0.001, ... 
    'MaxEpochs',6, ... 
    'Shuffle','every-epoch', ...
    'ValidationData',imdsValidation, ... 
    'ValidationFrequency',30, ... 
    'Verbose',false, ... 
    'Plots','training-progress');
net = trainNetwork(imdsTrain,netLayers,options);
YPred = classify(net,imdsValidation); 
YValidation = imdsValidation.Labels;
accuracy = sum(YPred == YValidation)/numel(YValidation);

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Walter Roberson 2020-5-30

I used to be involved with a lot of data classification work. We never got into Deep Learning, but with the other techniques we used, even with complicated automatic determination of methods, getting 90% or more was very rare. Getting above roughly 84% was uncommon

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Answer 1

vaibhav mishra 2020-6-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/538619-how-to-improve-accuracy-in-matlab#answer_459127

编辑：vaibhav mishra 2020-6-30

hi, ways to improve your validation accuracy are to apply regularization on your loss, or to apply some dropout so that model generalizes well and if possible try to decrease the learning rate, or use more training data.

You can use above methods to see the increase in your accuracy.