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Glossary

What is document classification?

Document classification sorts documents into categories using rules, a trained model or human review. Accuracy means nothing until you fix the label set.

Updated 21 Aug 2026

01

Where this one gets misread

A classification accuracy figure means nothing until the label set is fixed and somebody has agreed those are the right labels. Change the categories and the number changes with them.

02

Questions to ask

Ask for a worked example on your own material, and the evidence needed to reproduce it.

  • Who defined the categories?
  • What happens to a document that fits two of them?
  • How are borderline cases routed to a person?
  • What was the accuracy measured against?
03

How Marella uses the term

We use “Document classification” only where a product mechanism or an evaluation method backs it up, and we say when the behaviour depends on how a deployment is configured.

  • Backed by a product mechanism or an evaluation method
  • Deployment differences flagged

What this page does not prove

  1. B1A definition is not a claim about how the product performs.
  2. B2Vendor implementations vary.
  3. B3Test the term against a representative workflow.

Test the claim on your documents

Pick a real piece of work, agree what a good answer looks like, then go through the results together.