successivehalving

package

v0.8.2 Latest Latest Go to latest Published: Oct 29, 2020 License: MIT Imports: 7 Imported by: 0

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func OptionSetMinEarlyStoppingRate(minEarlyStoppingRate int) Option

OptionSetMinEarlyStoppingRate to set the minimum value of the early stopping rate.

func OptionSetMinResource(minResource int) Option

OptionSetMinResource to set the minimum resource.

func OptionSetReductionFactor(reductionFactor int) Option

OptionSetReductionFactor to set the reduction factor.

type Pruner struct {
	MinResource          int
	ReductionFactor      int
	MinEarlyStoppingRate int
}

Pruner using Optuna flavored Asynchronous Successive Halving Algorithm.

Successive Halving (arXiv: https://arxiv.org/abs/1502.07943) is a bandit-based algorithm to identify the best one among multiple configurations. This is based on Asynchronous Successive Halving Algorithm (arXiv: http://arxiv.org/abs/1810.05934), but currently this only supports Optuna flavored Asynchronous Successive Halving Algorithm. See https://github.com/optuna/optuna/pull/404 for more details.

func NewPruner(opts ...Option) (*Pruner, error)

NewPruner is a constructor for Pruner.

func (p *Pruner) Prune(study *goptuna.Study, trial goptuna.FrozenTrial) (bool, error)