public bool Exists(ExperimentParameters experimentParameters)
{
var controlQuery = $"SELECT name FROM sqlite_master WHERE name = '{nameof(_versions).Replace("_", string.Empty)}'";
var result = _databaseEngine.PrepareStatement(controlQuery).ExecuteReader();
if (!result.HasRows)
{
return(false);
}
var query = $"SELECT * FROM {nameof(_versions).Replace("_", string.Empty)} " +
$"WHERE {nameof(Version.ExperimentParametersHashString)} = '{experimentParameters.GetHashString()}'";
result = _databaseEngine.PrepareStatement(query).ExecuteReader();
return(result.HasRows);
}
static void Main(string[] args)
{
CultureInfo.DefaultThreadCurrentCulture = CultureInfo.InvariantCulture;//CultureInfo.GetCultureInfo("en-US");
var dbPath = Path.GetFullPath("Database test.db");
var databaseContext = new DatabaseContext(dbPath);
//var experimentParameters = Arguments.GetExperimentParameters();
var experimentParameters = new ExperimentParameters(2, 10,
typeOfMutation: ExperimentParameters.MutationType.Correlated,
typeOfBenchmark: ExperimentParameters.BenchmarkType.Simplexn,
stepThreshold: 0.1, numberOfGenerations: 1,
basePopulationSize: 15,
//basePopulationSize: 3,
offspringPopulationSize: 100,
//offspringPopulationSize: 20,
globalLerningRate: 1 / Math.Sqrt(2 * 2),
//globalLerningRate: 0.7,
individualLearningRate: 1 / Math.Sqrt(2 * Math.Sqrt(2)),
//individualLearningRate: 0.8,
numberOfPositivePoints: 10,
numberOfNegativePoints: 10,
ballnBoundaryValue: 2,
//simplexnBoundaryValue: 2,
seed: 1,
useRecombination: false,
numberOfParentsSolutionsToSelect: 5
//domainSamplingStep: 1
);
if (databaseContext.Exists(experimentParameters))
{
return;
}
if (experimentParameters.TypeOfBenchmark == ExperimentParameters.BenchmarkType.Other)
{
experimentParameters.ConstraintsToPointsGeneration = ReferenceModelsExamples.Example1;
}
var version = new Version(DateTime.Now, experimentParameters.GetHashString());
var stoper = new Stopwatch();
var distanceCalculator = new CanberraDistanceCalculator();
var engine = EngineFactory.GetEngine(experimentParameters);
stoper.Restart();
var positivePointsGenerator = new PositivePointsGenerator();
var positiveTrainingPoints = positivePointsGenerator.GeneratePoints(experimentParameters.NumberOfPositivePoints, engine.Benchmark);
stoper.Stop();
engine.Statistics.PositiveTrainingPointsGenerationTime = stoper.Elapsed;
stoper.Restart();
var negativePointsGenerator = new NegativePointsGenerator(positiveTrainingPoints, distanceCalculator, new NearestNeighbourDistanceCalculator(distanceCalculator));
var negativeTrainingPoints = negativePointsGenerator.GeneratePoints(experimentParameters.NumberOfNegativePoints, engine.Benchmark);
stoper.Stop();
engine.Statistics.NegativeTrainingPointsGenerationTime = stoper.Elapsed;
var trainingPoints = positiveTrainingPoints.Concat(negativeTrainingPoints).ToArray();
var mathModel = engine.SynthesizeModel(trainingPoints);
stoper.Restart();
var positiveTestPoints = positivePointsGenerator.GeneratePoints(experimentParameters.NumberOfPositivePoints, engine.Benchmark);
var negativeTestPoints = negativePointsGenerator.GeneratePoints(experimentParameters.NumberOfNegativePoints, engine.Benchmark);
var testPoints = positiveTestPoints.Concat(negativeTestPoints).ToArray();
stoper.Stop();
engine.Statistics.TestPointsGenerationTime = stoper.Elapsed;
var statistics = engine.EvaluateModel(testPoints);
databaseContext.Insert(version);
databaseContext.Insert(experimentParameters);
databaseContext.Insert(statistics);
databaseContext.Insert(mathModel);
databaseContext.Save();
databaseContext.Dispose();
TryGetVisibleResults(engine, positiveTrainingPoints, negativeTrainingPoints);
}
