Developing with the callback API

Scikit-learn offers a callback API to use built-in or custom callbacks with compatible estimators. This section is intended for developers who wish to implement callbacks or add callback support in estimators. For a general introduction to callbacks and how to use them, see the user guide.

• Implementing callback support in estimators
  • The CallbackSupportMixin class
  • The CallbackContext class
  • The with_callbacks decorator
  • Minimal example
• Developing callbacks
  • The callback protocol
  • Auto-propagated callbacks
  • Callback shared state
  • Minimal example