mgo.test.TestSMSEMOEA.scala Maven / Gradle / Ivy

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///*
// * Copyright (C) 2015 Romain Reuillon
// *
// * This program is free software: you can redistribute it and/or modify
// * it under the terms of the GNU Affero General Public License as published by
// * the Free Software Foundation, either version 3 of the License, or
// * (at your option) any later version.
// *
// * This program is distributed in the hope that it will be useful,
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// * GNU General Public License for more details.
// *
// * You should have received a copy of the GNU General Public License
// * along with this program.  If not, see .
// */
//package mgo.test
//
//import mgo.evolution._
//import mgo.evolution.algorithm._
//
//import scala.util.Random
//import scalaz._
//
//object TestSMSEMOEAStochastic extends App {
//  def average(s: Seq[Double]) = s.sum / s.size
//
//  val nsgaII = new SMSEMOEA {
//    def referencePoint = Seq(1000.0, 10)
//    def mu = 100
//    def fitness = Fitness(i => Seq(average(i.phenotype), 1.0 / i.phenotype.size))
//    override val cloneStrategy = queue(100)
//    type P = History[Double]
//  }
//
//  import nsgaII._
//
//  def dimensions = 10
//  def function = rastrigin
//
//  def problem(g: G) = State { rng: Random =>
//    val scaled = function.scale(g.genomeValue)
//    val eval = function.compute(scaled)
//    (rng, eval + (rng.nextGaussian() * 0.5 * math.sqrt(eval)))
//  }
//
//  val evo = evolution(nsgaII, 100)(randomGenome(dimensions), problem, afterGeneration(1000))
//
//  import scala.Ordering.Implicits._
//  val (s, res) = evo.run(47)
//
//  val oldest = res.minBy(i => Seq(-i.phenotype.size, average(i.phenotype)))
//
//  println(res.count(_.phenotype.size == oldest.phenotype.size))
//  println(res.groupBy(_.genome.fromOperation).toList.map { case (k, v) => k -> v.size }.sortBy(_._1))
//  println(function.scale(oldest.genomeValue) + " " + average(oldest.phenotype) + " " + oldest.phenotype.size + " " + oldest.born)
//
//}
//