GrammaticalEvolution

Installation

Installation by default

  Metacello new
 baseline:'GrammaticalEvolution';
 repository: 'github://andreina-covi/GrammaticalEvolution:master/src';
 load

Installation with visualization

  Metacello new
 baseline:'GrammaticalEvolution';
 repository: 'github://andreina-covi/GrammaticalEvolution:master/src';
 load: #('all')

Example:

| a |
a := GEAssertion new seed: 245.
a  testClasses:  {RSColoredTreePaletteTest};
    targetClass: RSColoredTreePalette;
    targetSelectors: #(#allLeavesAccessibleFrom:);
    packageScope: 'Roassal3*';
    folderToExport: '/tmp'.
a run.
a.

To visualize the evolution type the following:

GAEvoViz new
    populations: (self allPopulations at: #allLeavesAccessibleFrom:); 
    populationFileName: '/tmp/RSColoredTreePalette_allLeavesAccessibleFrom_Data.csv';
    comparisonSelector: #<;
    run.

You need to specify:

populations through generations,
.csv file location where the result was exported, and
like the goal is the decreasing of fitness value we need to specify the comparisonSelector: with #<

Two files will be exported at the final of execution, the first one is to visualize with GAEvoViz tool and the another one is to give information about:

the rules that have been used in the initial population
invalid individuals created in the initial population
invalid individuals created on mutation
invalid individuals created on crossover
best fitness achieved in the final generation
number of generations

With this information we can also compare different grammars for the same problem and export the comparison on a .csv file typing:

GEGrammarEvolution exportComparisonOf: #('/tmp/G1.csv' '/tmp/G2.csv' '/tmp/G3.csv' ) to: '/tmp/comparisonGrammars.csv'.