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2216b93426
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* use evolve() * add a way to calculate GAMaxFES (MaxFES for Genetic Algorithms) in the bench package
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// Copyright 2023 wanderer <a_mirre at utb dot cz>
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// SPDX-License-Identifier: GPL-3.0-or-later
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package bench
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import "log"
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type funcParams struct {
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min float64
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max float64
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}
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const (
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// Neighbourhood is the number of neighbouring values that are to be
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// generated as part of e.g. Stochastic Hill Climbing algo.
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Neighbourhood = 10
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// MaxNeighbourVariancePercent covers an arbitrary task requirement: pick
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// neighbours from max n percent of search space.
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MaxNeighbourVariancePercent = 10
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// MaxFES is the maximum number of allowed function evaluations.
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MaxFES = 10000
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)
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var (
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// Dimensions to compute for (spatial complexity..?).
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Dimensions = []int{5, 10, 20}
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// SchwefelParams is a struct holding the min, max allowed value of inputs
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// passed to the Schwefel function.
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SchwefelParams = funcParams{min: -500.0, max: 500.0}
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// DeJong1Params is a struct holding the min, max allowed value of inputs
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// passed to the De Jong 1st function.
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DeJong1Params = funcParams{min: -5.0, max: 5.0}
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// DeJong2Params is a struct holding the min, max allowed value of inputs
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// passed to the De Jong 2nd function.
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DeJong2Params = funcParams{min: -5.0, max: 5.0}
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// RastriginParams is a struct holding the min, max allowed value of inputs
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// passed to the Rastrigin function.
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RastriginParams = funcParams{min: -5.12, max: 5.12}
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)
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// Min returns the non-exported "min" field of a funcParams struct.
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func (f *funcParams) Min() float64 {
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return f.min
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}
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// Max returns the non-exported 'max' field of a funcParams struct.
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func (f *funcParams) Max() float64 {
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return f.max
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}
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// GetGAMaxFES calculates the value of MaxFES for Genetic Algorithms. This is
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// an arbitrary specification where MaxFES is 5000xD.
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func GetGAMaxFES(dim int) int {
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if dim <= 0 {
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log.Fatalln("dim has to be greater than 0, got:", dim)
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}
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return dim * 5000
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}
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