The amount of time Transformer takes to generate categories depends on several factors:
the location from which Transformer is reading source data records. If you are accessing data on a LAN or from a relational database, ensure the network and/or database load is not high when you are building large models.
the number of categories in the model. For very large models with tens of thousands of categories, ensure the PC or server on which you are generating the categories has sufficient memory. You can also adjust the amount of memory available to Transformer when building PowerCubes.