Пример #1
0
func ExampleModel() {
	gp.SetSeed(1)
	pset := gp.CreatePrimSet(1, "x")
	pset.Add(num.Add, num.Sub, num.Mul, num.Div, num.Neg, num.V(0), num.V(1))

	problem := gp.Model{
		PrimitiveSet:  pset,
		Generator:     gp.GenFull(pset, 1, 3),
		PopSize:       500,
		Fitness:       getFitness,
		Offspring:     gp.Tournament(3),
		Mutate:        gp.MutUniform(gp.GenGrow(pset, 0, 2)),
		MutateProb:    0.2,
		Crossover:     gp.CxOnePoint(),
		CrossoverProb: 0.5,
		Threads:       1,
	}

	logger := &stats.Logger{MaxGen: 20, TargetFitness: 0.99, PrintStats: true}
	problem.Run(logger)

	// Output:
	// set random seed: 1
	// Gen      Evals    FitMax   FitAvg   FitStd   SizeAvg  SizeMax  DepthAvg DepthMax
	// 0        500      0.12     0.025    0.014    6.85     15       1.96     3
	// 1        299      0.33     0.0344   0.0204   6.33     27       1.93     6
	// 2        286      0.663    0.0469   0.0448   6.26     27       1.9      7
	// 3        265      0.663    0.0598   0.0683   6.58     34       2.06     9
	// 4        280      0.663    0.0772   0.088    7.51     39       2.39     9
	// 5        291      0.663    0.0918   0.1      8.92     32       2.82     8
	// 6        302      0.663    0.117    0.133    10.3     35       3.2      10
	// 7        294      1        0.152    0.17     11.1     35       3.48     10
	// ** SUCCESS **
}
Пример #2
0
Файл: web.go Проект: jnb666/gogp
// MainLoop function runs a model repeatedly with given logger.
// Control of step and restart is controlled via web interface.
func MainLoop(problem *gp.Model, logger *Logger, port, webRoot string) {
	logger.InitChan()
	go logger.ListenAndServe(port, webRoot)
	go func() {
		for {
			problem.Run(logger)
			logger.Reset()
		}
	}()
	StartBrowser("http://localhost"+port, BrowserWidth, BrowserHeight)
}