I am attempting to train a NN to classify a Gaussian that has 4 separate classes. I have several different sample sizes, but currently I am focussing on the sample size of 500. The 'Ytrain' vector is called 'labels_train' and when entering it into the function it is 500x1 with each row corresponding to a column in x_train. x_train is a 3x500 vector with 3 features and each column corresponds to the respective row in 'labels_train'. I repeatidly get the error listed above; any idea why? Thanks a bunch.
Also when I attempt to use the categorical() function on the labels_train, I get the following error:
Invalid training data. Sequence responses must have the same sequence length as the corresponding predictors.