> For the complete documentation index, see [llms.txt](https://george-jen.gitbook.io/data-science-and-apache-spark/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://george-jen.gitbook.io/data-science-and-apache-spark/ml-pipeline.md).

# ML Pipeline

### Pipeline:

A Pipeline chains multiple Transformers and Estimators together to specify an ML workflow.

Estimator:

![](https://2100080250-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1PNTHVApkPePuMdTu3%2F-M2im-JGq5V-jD_b8TGc%2F-M2kzeqvN4BfvluIKPd_%2Fml_estimator.jpg?alt=media\&token=525114fc-215b-4ecd-a2d7-29312696a2af)

Transformer:

![](https://2100080250-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M1PNTHVApkPePuMdTu3%2F-M2im-JGq5V-jD_b8TGc%2F-M2kzzmXsSL5HHR3e44I%2Ftransformer.jpg?alt=media\&token=a8d1a2cd-c3f8-40ab-a762-3cde5a709c52)