> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Classify activity

> Determine the type of document received by ABBYY Vantage for processing.

Use the **Classify** activity to determine the type of a document, using a [Classification skill](/vantage/documentation/skill-designer/classification/classification-skill) from the **Skill Catalog**.

## Select a Classification skill

Use the **Actions** pane to specify which Classification skill from the **Skill Catalog** to use.

<Note>
  Only published skills appear in the list of available Classification skills.
</Note>

Once you pick a Classification skill, the **Actions** pane lists its classes. By default all classes are selected — deselect any you don't want to process. Each selected class must be connected to a Document skill.

Deselecting classes is useful when your Classification skill covers more document types than you want to process, and retraining the skill isn't practical.

<Note>
  Documents of excluded classes are not processed.
</Note>

## Create a new Classification skill

If you can't find a suitable skill in the **Skill Catalog**, create a new one:

<Steps>
  <Step title="Open the Create form">
    Click **Create New Skill** at the bottom of the **Actions** pane.
  </Step>

  <Step title="Name and configure">
    Enter a name for the skill and fill out the list of required skills.
  </Step>

  <Step title="Save">
    Click **Done**. The new skill is automatically selected as this activity's Classification skill and added to the **Skill Catalog**.
  </Step>
</Steps>

<Tip>
  Train your new Classification skill and publish it to the Skill Catalog. See [Publish a skill](/vantage/documentation/skill-catalog/publish-skill) and [Set up a Classification skill](/vantage/documentation/skill-designer/classification/classification-skill-setup).
</Tip>

## Enable Online learning

If the Process skill includes a verification step, you can enable Online learning for your Classification skill from the **Actions** pane. Online learning uses manual review results to continuously improve the skill's precision. For more information, see [Online learning](/vantage/documentation/runtime/online-learning/online-learning).

## Related topics

* [Set up a Process skill](/vantage/documentation/skill-designer/process/set-up)
* [Classification skill](/vantage/documentation/skill-designer/classification/classification-skill)
* [Set up a Classification skill](/vantage/documentation/skill-designer/classification/classification-skill-setup)
* [Extract activity](/vantage/documentation/skill-designer/process/extract-activity)
* [Publish a skill](/vantage/documentation/skill-catalog/publish-skill)