Hi Daemo Lee,
I understand that you are facing an error in passing the validation data to your model. The Validation data input argument can be a datastore or a cell array. In your case, the datastore can be used as validation data. You have combined "XsVali", "XfVali", and "YVali" to create a combined datastore, which is read as a 1x3 cell array by the "read" function. This causes an error with the "ValidationData" input argument, as the data must be in the form of "{predictors, targets}".
You can change the lines of code which use the “combine” function in the following manner:
cds_XVali = combine(ds_XfVali,ds_XsVali,ReadOrder='sequential');
cds_Vali = combine(cdsXVali,ds_YVali);
- The first line creates a sequential datastore that contains "ds_XfVali" and "ds_XsVali" in a concatenated form.
- The second line creates a combined datastore that horizontally concatenates "cds_XVali" and "ds_YVali".
- The result will be a 1x2 cell array in the proper format for validation data.
For more information on combining datastore refer the following link: https://www.mathworks.com/help/matlab/ref/matlab.io.datastore.combine.html?s_tid=doc_ta#:~:text=imshow(imtile(dataOut))%3B-,Combine,-Datastores%20Sequentially
For more details on the proper format for Validation Data refer the following:
I hope it helps,
Regards,
Avadhoot.
