I'm getiing this error while running the below code and the error is "Function 'subsindex' is not defined for values of class 'cell'". Could anyone tell me the way to minimize it?

options = trainingOptions('sgdm',...
    'LearnRateSchedule','piecewise',...
    'LearnRateDropFactor',0.2,...
    'LearnRateDropPeriod',5,...
    'MaxEpochs',4,...
    'MiniBatchSize',8,...
    'ValidationData',{imgdtsTrain,imgdtsValidation},...
    'ValidationFrequency',10,...
    'Verbose',false,...
    'Plots','training-progress')

[per isakson]

What are the values of the variables, imgdtsTrain and imgdtsValidation ?

[GUDIVADA ROKESH KUMAR]

[imgdtsTrain,imgdtsValidation] = splitEachLabel(imgdts,...
    trainingNumFiles,'randomize') % 'imgdts' is my image data source

Answer 1

[Steven Lord]

You've defined a variable named trainingOptions. That line of code is being interpreted as an attempt to index into that variable rather than an attempt to call the trainingOptions function. Rename or remove the variable then run that code again.

[GUDIVADA ROKESH KUMAR]

still showing the same error :(

[Steven Lord]

Show us the full error message (everything displayed in red text.)

Are you certain it is this call to trainingOptions that's throwing the error?

Did you rename or remove the variable from the workspace but not modify the code that precedes this line (which recreates that variable when you run it again?)