Add examples using NSGA-II for solving a multi-objective TSP problem

examples/NSGAIIMultiObjectiveTSPDefaultSettings.jl

@@ -0,0 +1,26 @@
+using MetaJul
+
+# NSGA-II algorithm example configured from the NSGA-II template
+function main()
+    tsp_data_dir = joinpath(@__DIR__, "..", "resources/tspDataFiles")
+
+    problem = multiObjectiveTSP("kroAB100", [joinpath(tsp_data_dir, "kroA100.tsp"), joinpath(tsp_data_dir, "kroB100.tsp")])
+
+    solver::NSGAII = NSGAII(problem)
+
+    optimize!(solver)
+
+    front = foundSolutions(solver)
+
+    objectivesFileName = "FUN.csv"
+    variablesFileName = "VAR.csv"
+
+    println("Algorithm: ", name(solver))
+
+    println("Objectives stored in file ", objectivesFileName)
+    printObjectivesToCSVFile(objectivesFileName,     front)
+
+    println("Variables stored in file ", variablesFileName)
+    printVariablesToCSVFile(variablesFileName, front)
+    println("Computing time: ", computingTime(solver))
+end

examples/NSGAIIMultiObjectiveTSPExplicitSettings.jl

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+using MetaJul
+
+# NSGA-II algorithm example configured from the NSGA-II template
+function main()
+    tsp_data_dir = joinpath(@__DIR__, "..", "resources/tspDataFiles")
+
+    problem = multiObjectiveTSP("kroAB100", [joinpath(tsp_data_dir, "kroA100.tsp"), joinpath(tsp_data_dir, "kroB100.tsp")])
+
+    solver::NSGAII = NSGAII(
+        problem,
+        populationSize = 100, 
+        termination = TerminationByEvaluations(125000),
+        crossover = PMXCrossover(probability = 0.9),
+        mutation = PermutationSwapMutation(probability = 0.2))
+
+
+    observer = EvaluationObserver(10000)
+    register!(observable(solver), observer)
+
+    optimize!(solver)
+
+    front = foundSolutions(solver)
+
+    objectivesFileName = "FUN.csv"
+    variablesFileName = "VAR.csv"
+
+    println("Algorithm: ", name(solver))
+
+    println("Objectives stored in file ", objectivesFileName)
+    printObjectivesToCSVFile(objectivesFileName,     front)
+
+    println("Variables stored in file ", variablesFileName)
+    printVariablesToCSVFile(variablesFileName, front)
+    println("Computing time: ", computingTime(solver))
+end