Extraction Model Chaining

Extract data from detected split ranges.

Use Split ranges to automatically extract document data, allowing for several different extractions on a multi-page file.

Note: Split Models also work on single-page files, in this case the range will always be exactly one page. If you need multiple extraction results on the same page, take a look at Crop Models instead.

Extraction Set Up

At Model Creation

When creating your Split model, you'll be adding document classes in the creation window.

For each document class, you can set one of your Extraction Models for chaining. The Extraction Model must exist prior to the Split Model creation.

Use the search field to filter available extraction models.

After Model Creation

This works exactly like when creating at model creation.

Simply go to your Split model's "Utility Configuration" page and adjust as needed.

You can add new classes, remove classes, and change Extraction Models.

Selectively Extracting

If a detected class has no linked Extraction Model, no extraction runs for that crop.

This allows selectively extracting some sections of the file while ignoring others.

Let's say you receive large multi-page PDFs from your users, where each PDF is a bundle of different scanned documents: plane tickets, travel receipts, driver license, and passport.

You need only the passports.

In your Split configuration, add a passport class and an other class, and only link an extraction model to the passport class.

All split ranges will get classified, but only those linked to an Extraction Model will have extraction results.

Always add an other class in addition to classes of interest to you, unless all potential document types are known in advance.

Removing Unused Pages

It's also possible to remove pages that are never used in the Extraction. For example to remove terms and conditions from invoices, set up the classes terms_and_conditions_page and invoice_page , and only link an Extraction Model to the invoice_page class.

Access Extraction Results

When an Extraction model is linked, each Split Range with the detected class will contain an Extraction Response object, which is identical when making an Extraction request for a single document.

Check the Split Result section for more details.