How to plot network performance?

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john karli
john karli 2022-3-4
回答： Mahesh Taparia 2022-3-9
I am trying to plot the network performance using following code
[net2,tr] = trainNetwork(augimdsTrain,lgraph,options);
figure
plot(tr.TrainingLoss,'b-')
hold on
x = 1 : length(tr.ValidationLoss);
y = tr.ValidationLoss;
idx = ~any(isnan(y),1);
plot(x(idx),y(idx),'--k','Marker','.','MarkerSize' ,12);
plotperf(tr)
but got the following error
Unrecognized field name "num_epochs".
Error in plotperform>update_plot (line 258)
numEpochs = tr.num_epochs;
Error in plotperform (line 109)
plotData = update_plot(param,fig,plotData,update_args{:});
my tr variable have
>> tr
tr =
struct with fields:
TrainingLoss: [1×9187 double]
TrainingAccuracy: [1×9187 double]
ValidationLoss: [1×9187 double]
ValidationAccuracy: [1×9187 double]
BaseLearnRate: [1×9187 double]
FinalValidationLoss: 0.0322
FinalValidationAccuracy: 99.6214

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回答（2 个）

yanqi liu
yanqi liu 2022-3-7
PLOTPERF Plot network performance.
the tr get by train not trainNetwork，so may be should plot perf by self，such as use plotroc(targets,outputs)
  2 个评论
john karli
john karli 2022-3-7
what is the targets and outputs in plotroc?
yanqi liu
yanqi liu 2022-3-7
targets：real label for test data
outputs：predict label for test data

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Mahesh Taparia
Mahesh Taparia 2022-3-9
Hi
You can select the 'Plots' name value pair of trainingOptions function to 'training-progress' and then train the network. You will be able to see the training plot, and you can export and save that. For more information, you can refer this documentation.
Hope it helps!

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