show

Show training information plot

Since R2023b

Syntax

show(info)

Description

show(info) displays the specified training information in a plot.

Examples

Show Neural Network Training Information

Unzip the digit sample data and create an image datastore. The imageDatastore function automatically labels the images based on folder names.

unzip("DigitsData.zip")
imds = imageDatastore("DigitsData", ...
    IncludeSubfolders=true, ...
    LabelSource="foldernames");

Define the convolutional neural network architecture. Specify the size of the images in the input layer of the network and the number of classes in the final fully connected layer. Each image is 28-by-28-by-1 pixels.

inputSize = [28 28 1];
numClasses = numel(categories(imds.Labels));

layers = [
    imageInputLayer(inputSize)
    convolution2dLayer(5,20)
    batchNormalizationLayer
    reluLayer
    fullyConnectedLayer(numClasses)
    softmaxLayer];

Specify the training options.

• Train for four epochs using the SGDM solver.

• Monitor the accuracy metric.

options = trainingOptions("sgdm", ...
    MaxEpochs=4, ...
    Metrics="accuracy");

Train the neural network. For classification, use cross-entropy loss. Return the trained network and the training information.

[net,info] = trainnet(imds,layers,"crossentropy",options);

    Iteration    Epoch    TimeElapsed    LearnRate    TrainingLoss    TrainingAccuracy
    _________    _____    ___________    _________    ____________    ________________
            1        1       00:00:01         0.01          2.7615              3.9062
           50        1       00:00:08         0.01         0.48211              85.938
          100        2       00:00:12         0.01         0.16471              96.094
          150        2       00:00:16         0.01         0.10177              96.094
          200        3       00:00:22         0.01        0.057216                 100
          250        4       00:00:31         0.01        0.031815                 100
          300        4       00:00:35         0.01        0.021116                 100
          312        4       00:00:36         0.01        0.029253              99.219
Training stopped: Max epochs completed

View the training information.

info

info = 
  TrainingInfo with properties:

           TrainingHistory: [312x5 table]
         ValidationHistory: [0x0 table]
    OutputNetworkIteration: 312
                StopReason: "Max epochs completed"

Display the training information in a plot using the show function.

show(info)

Close the plot using the close function.

close(info)

Input Arguments

info — Training information

TrainingInfo object

Training information, specified as a TrainingInfo object.

Version History

Introduced in R2023b