---
title: "Custom tuner"
sub_link: "optimization-engine/tuner"
code_link: "https://github.com/polyaxon/cli/blob/master/cli/polyaxon/flow/matrix/tuner.py"
meta_title: "Custom tuner - Polyaxonfile Specification Sections - Polyaxon References"
meta_description: "Customizing the default tuners' logic - Polyaxonfile Specification Sections."
visibility: public
status: published
tags:
  - reference
  - polyaxon
  - experimentation
  - hyperparameter-optimization
sidebar: "automation"
---

{{autogenerated}}
