Predict column of table when other columns have data

Hey everyone,

Just wondering if there is a way to do this please?

I have a table with 4 columns, not including the sequnce step. The first 3 area conditoinal and always present, column 4 are results which are influenced by the first 3.

I can predict the whole table without issue, say:

for i = 2:numTimeStepsTest

[net,YPred(:,i)] = predictAndUpdateState(net,YPred(:,i-1),'ExecutionEnvironment','cpu');

end

However, I'm wondering what or how to predict where I have columns 1 to 3; need the 4th predicted. Would this be simliar to predicting the 'next step', as if using XTest are the previous step or would I be using a table with 3 columns, to predict an array that I could combine afterwards....?