We are using UiPath Document Understanding workflows specifically for processing invoices. We have been using the standard Invoices model for getting invoice values to be validated by accounts payable. This has been working quite well for some time.
We recently started looking into using the AI Fabric additions to retrain the Invoices model to make the automatically selected fields more accurate. I recently was told that we cannot train the base Invoices model without purchasing GPU licensing and that we will need to use the base Document Understanding model instead for CPU only retraining. My concern with this is that the documentation pipeline section states that retraining using one of the base models (invoice, receipts) takes advantage of the preexisting model while training using the Document Understanding model “just trains a model from scratch on the dataset provided as input”.
The retrained Document Understanding model recently finished training with 176 of our invoices, but it does not seem to perform as well as the base Invoice model. Is it recommended that we get access to GPU for retraining the actual Invoices model if we are solely interested in improving invoice processing?