Training AI Model - Document Understanding

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1

Hi

I am using the standard out of the box package for invoice and purchase order model to extract information from PDF. However not all the information (fields) are extracted from the PDF. The PDF’s correspond to Invoices and PO’s and are of various formats.

I have trained the models using 15 pdf documents of each type and the evaluation score increased. Even though some of the missing information is now being extracted, the model is still unable to extract some fields (which it previously extracted)

How does the training work? What is the optimal number of documents on which the model has to be trained? Will it ever achieve 100% accuracy or extract all the fields?

2

Hello @Vi15P!

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3

Hello Dear, did you get a solution for this problem as i train the model each time i run the project and select the field manually every time

4

You cannot expect 100% accuracy from any ML model as there will always be a marginal error. How many variations of invoices do you see?

The number of invoices you need to train depends on the diversity of your invoices &POs. More diversity would mean you might have to train with more data.

If fields are not being extracted as before there might be a imbalance in your train dataset. Try to retrain the model with more data and keep iterating till you get a satisfactory model.

5

Here you have some information about the number of samples for training.

Training and Evaluation Pipelines (uipath.com)