# Data extraction training related activities

> Activities supporting data extraction training in Document Understanding, including Train Extractors Scope and activities for collecting Validation Station data for model import.

## Train extractors scope

Provides a scope for any extractor activities you want to train. More details [here](https://docs.uipath.com/activities/other/latest/document-understanding/train-extractors-scope).

## Machine Learning Extractor Trainer

Enables the collection of data that has been processed through Validation Station so that it can be imported into Document Manager. More details [here](https://docs.uipath.com/document-understanding/automation-cloud/latest/classic-user-guide/machine-learning-extractor-trainer#machine-learning-extractor-trainer).