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* Add new stoppers & docs * Add tests for maximum iteration stopper and trial plateau stopper * Update python/ray/tune/stopper.py Co-authored-by: Richard Liaw <rliaw@berkeley.edu> * Update doc/source/tune/api_docs/stoppers.rst Co-authored-by: Richard Liaw <rliaw@berkeley.edu> * Update doc/source/tune/api_docs/stoppers.rst Co-authored-by: Richard Liaw <rliaw@berkeley.edu> * Apply suggestions from code review * Apply suggestions from code review * Update python/ray/tune/stopper.py Co-authored-by: Richard Liaw <rliaw@berkeley.edu>
46 lines
1.5 KiB
ReStructuredText
46 lines
1.5 KiB
ReStructuredText
.. _tune-stoppers:
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Stopping mechanisms (tune.stopper)
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==================================
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In addition to Trial Schedulers like :ref:`ASHA <tune-scheduler-hyperband>`, where a number of
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trials are stopped if they perform subpar, Ray Tune also supports custom stopping mechanisms to stop trials early. For instance, stopping mechanisms can specify to stop trials when they reached a plateau and the metric
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doesn't change anymore.
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Ray Tune comes with several stopping mechanisms out of the box. For custom stopping behavior, you can
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inherit from the :class:`Stopper <ray.tune.Stopper>` class.
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Other stopping behaviors are described :ref:`in the user guide <tune-stopping>`.
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.. contents::
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:local:
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:depth: 1
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.. _tune-stop-ref:
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Stopper (tune.Stopper)
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----------------------
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.. autoclass:: ray.tune.Stopper
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:members: __call__, stop_all
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MaximumIterationStopper (tune.stopper.MaximumIterationStopper)
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--------------------------------------------------------------
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.. autoclass:: ray.tune.stopper.MaximumIterationStopper
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ExperimentPlateauStopper (tune.stopper.ExperimentPlateauStopper)
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----------------------------------------------------------------
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.. autoclass:: ray.tune.stopper.ExperimentPlateauStopper
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TrialPlateauStopper (tune.stopper.TrialPlateauStopper)
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------------------------------------------------------
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.. autoclass:: ray.tune.stopper.TrialPlateauStopper
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TimeoutStopper (tune.stopper.TimeoutStopper)
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--------------------------------------------
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.. autoclass:: ray.tune.stopper.TimeoutStopper
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