What is an annotation label?

Labels are used in annotation to classify information in text. Here’s a detailed explanation.

What are labels?

A label is the name of a category of things or concepts of the same type. It is used to classify information in texts.


If you are classifying customer support tickets, your labels may be "product issue", "shipping issue" or "service issue"


In some cases, labels can have sub-labels.


A product issue may have multiple causes. It can be due to the price or the quality of the product, so the “product issue” label has the “price issue” and the “quality issue” sub-labels.

Labels in classification projects

In classification projects, labels and sub-labels are used to:

  • Annotate your data
  • Train your solution

Read more about how to define, create and manage labels.

If you need more help, please reach out to us at hello@lettria.com