public void MultivariateLinearLogisticRegressionSimple()
{
// define model y = a + b0 * x0 + b1 * x1 + noise
double a = 1.0;
double b0 = -1.0 / 2.0;
double b1 = 1.0 / 3.0;
ContinuousDistribution x0distribution = new LaplaceDistribution();
ContinuousDistribution x1distribution = new NormalDistribution();
// draw a sample from the model
Random rng = new Random(1);
MultivariateSample old = new MultivariateSample("y", "x0", "x1");
FrameTable table = new FrameTable();
table.AddColumn <double>("x0");
table.AddColumn <double>("x1");
table.AddColumn <bool>("y");
for (int i = 0; i < 100; i++)
{
double x0 = x0distribution.GetRandomValue(rng);
double x1 = x1distribution.GetRandomValue(rng);
double t = a + b0 * x0 + b1 * x1;
double p = 1.0 / (1.0 + Math.Exp(-t));
bool y = (rng.NextDouble() < p);
old.Add(y ? 1.0 : 0.0, x0, x1);
table.AddRow(x0, x1, y);
}
// do a linear regression fit on the model
MultiLinearLogisticRegressionResult oldResult = old.LogisticLinearRegression(0);
MultiLinearLogisticRegressionResult newResult = table["y"].As <bool>().MultiLinearLogisticRegression(
table["x0"].As <double>(), table["x1"].As <double>()
);
// the result should have the appropriate dimension
Assert.IsTrue(newResult.Parameters.Count == 3);
// The parameters should match the model
Assert.IsTrue(newResult.CoefficientOf(0).ConfidenceInterval(0.99).ClosedContains(b0));
Assert.IsTrue(newResult.CoefficientOf("x1").ConfidenceInterval(0.99).ClosedContains(b1));
Assert.IsTrue(newResult.Intercept.ConfidenceInterval(0.99).ClosedContains(a));
// Our predictions should be better than chance.
int correct = 0;
for (int i = 0; i < table.Rows.Count; i++)
{
FrameRow row = table.Rows[i];
double x0 = (double)row["x0"];
double x1 = (double)row["x1"];
double p = newResult.Predict(x0, x1).Value;
bool y = (bool)row["y"];
if ((y && p > 0.5) || (!y & p < 0.5))
{
correct++;
}
}
Assert.IsTrue(correct > 0.5 * table.Rows.Count);
}
public void ConstructorTest2()
{
var laplace = new LaplaceDistribution(location: 4, scale: 2);
double mean = laplace.Mean; // 4.0
double median = laplace.Median; // 4.0
double var = laplace.Variance; // 8.0
double cdf = laplace.DistributionFunction(x: 0.27); // 0.077448104942453522
double pdf = laplace.ProbabilityDensityFunction(x: 0.27); // 0.038724052471226761
double lpdf = laplace.LogProbabilityDensityFunction(x: 0.27); // -3.2512943611198906
double ccdf = laplace.ComplementaryDistributionFunction(x: 0.27); // 0.92255189505754642
double icdf = laplace.InverseDistributionFunction(p: cdf); // 0.27
double hf = laplace.HazardFunction(x: 0.27); // 0.041974931360160776
double chf = laplace.CumulativeHazardFunction(x: 0.27); // 0.080611649844768624
string str = laplace.ToString(CultureInfo.InvariantCulture); // Laplace(x; μ = 4, b = 2)
Assert.AreEqual(4.0, mean);
Assert.AreEqual(4.0, median);
Assert.AreEqual(8.0, var);
Assert.AreEqual(0.080611649844768624, chf);
Assert.AreEqual(0.077448104942453522, cdf);
Assert.AreEqual(0.038724052471226761, pdf);
Assert.AreEqual(-3.2512943611198906, lpdf);
Assert.AreEqual(0.041974931360160776, hf);
Assert.AreEqual(0.92255189505754642, ccdf);
Assert.AreEqual(0.26999999840794775, icdf);
Assert.AreEqual("Laplace(x; μ = 4, b = 2)", str);
}
public void MultivariateLinearRegressionVariances()
{
// define model y = a + b0 * x0 + b1 * x1 + noise
double a = -3.0;
double b0 = 2.0;
double b1 = -1.0;
ContinuousDistribution x0distribution = new LaplaceDistribution();
ContinuousDistribution x1distribution = new CauchyDistribution();
ContinuousDistribution eDistribution = new NormalDistribution(0.0, 4.0);
FrameTable data = new FrameTable();
data.AddColumns <double>("a", "da", "b0", "db0", "b1", "db1", "ab1Cov", "p", "dp");
// draw a sample from the model
Random rng = new Random(4);
for (int j = 0; j < 64; j++)
{
List <double> x0s = new List <double>();
List <double> x1s = new List <double>();
List <double> ys = new List <double>();
for (int i = 0; i < 16; i++)
{
double x0 = x0distribution.GetRandomValue(rng);
double x1 = x1distribution.GetRandomValue(rng);
double e = eDistribution.GetRandomValue(rng);
double y = a + b0 * x0 + b1 * x1 + e;
x0s.Add(x0);
x1s.Add(x1);
ys.Add(y);
}
// do a linear regression fit on the model
MultiLinearRegressionResult result = ys.MultiLinearRegression(
new Dictionary <string, IReadOnlyList <double> > {
{ "x0", x0s }, { "x1", x1s }
}
);
UncertainValue pp = result.Predict(-5.0, 6.0);
data.AddRow(
result.Intercept.Value, result.Intercept.Uncertainty,
result.CoefficientOf("x0").Value, result.CoefficientOf("x0").Uncertainty,
result.CoefficientOf("x1").Value, result.CoefficientOf("x1").Uncertainty,
result.Parameters.CovarianceOf("Intercept", "x1"),
pp.Value, pp.Uncertainty
);
}
// The estimated parameters should agree with the model that generated the data.
// The variances of the estimates should agree with the claimed variances
Assert.IsTrue(data["a"].As <double>().PopulationStandardDeviation().ConfidenceInterval(0.99).ClosedContains(data["da"].As <double>().Mean()));
Assert.IsTrue(data["b0"].As <double>().PopulationStandardDeviation().ConfidenceInterval(0.99).ClosedContains(data["db0"].As <double>().Mean()));
Assert.IsTrue(data["b1"].As <double>().PopulationStandardDeviation().ConfidenceInterval(0.99).ClosedContains(data["db1"].As <double>().Mean()));
Assert.IsTrue(data["a"].As <double>().PopulationCovariance(data["b1"].As <double>()).ConfidenceInterval(0.99).ClosedContains(data["ab1Cov"].As <double>().Mean()));
Assert.IsTrue(data["p"].As <double>().PopulationStandardDeviation().ConfidenceInterval(0.99).ClosedContains(data["dp"].As <double>().Median()));
}
public void LaplaceTest()
{
var target = GeneralizedNormalDistribution.Laplace(location: 0.42, scale: 4.2);
var normal = new LaplaceDistribution(location: 0.42, scale: 4.2);
test(target, normal);
}
public void LaplaceDistributionConstructorTest()
{
{
LaplaceDistribution target = new LaplaceDistribution(0, 0.2);
double[] expected = { 2.5, 1.5163266, 0.919699, 0.557825, 0.338338 };
for (int i = 0; i < expected.Length; i++)
{
double x = i / 10.0;
double actual = target.ProbabilityDensityFunction(x);
Assert.AreEqual(expected[i], actual, 1e-6);
Assert.IsFalse(double.IsNaN(actual));
}
}
{
LaplaceDistribution target = new LaplaceDistribution(-2, 5.79);
double[] expected = { 0.0666469, 0.0655057, 0.06438406, 0.0632816234, 0.062198060, 0.061133051 };
for (int i = 0; i < expected.Length; i++)
{
double x = (i - 5) / 10.0;
double actual = target.ProbabilityDensityFunction(x);
Assert.AreEqual(expected[i], actual, 1e-8);
Assert.IsFalse(double.IsNaN(actual));
}
}
}
//End of ui.cs file Contents
//-------------------------------------------------------------------------
//Begin of Random.cs file contents
/// <summary>
/// Initializes the random-number generator with a specific seed.
/// </summary>
public void Initialize(uint seed)
{
RandomNumberGenerator = new MT19937Generator(seed);
betaDist = new BetaDistribution(RandomNumberGenerator);
betaPrimeDist = new BetaPrimeDistribution(RandomNumberGenerator);
cauchyDist = new CauchyDistribution(RandomNumberGenerator);
chiDist = new ChiDistribution(RandomNumberGenerator);
chiSquareDist = new ChiSquareDistribution(RandomNumberGenerator);
continuousUniformDist = new ContinuousUniformDistribution(RandomNumberGenerator);
erlangDist = new ErlangDistribution(RandomNumberGenerator);
exponentialDist = new ExponentialDistribution(RandomNumberGenerator);
fisherSnedecorDist = new FisherSnedecorDistribution(RandomNumberGenerator);
fisherTippettDist = new FisherTippettDistribution(RandomNumberGenerator);
gammaDist = new GammaDistribution(RandomNumberGenerator);
laplaceDist = new LaplaceDistribution(RandomNumberGenerator);
lognormalDist = new LognormalDistribution(RandomNumberGenerator);
normalDist = new NormalDistribution(RandomNumberGenerator);
paretoDist = new ParetoDistribution(RandomNumberGenerator);
powerDist = new PowerDistribution(RandomNumberGenerator);
rayleighDist = new RayleighDistribution(RandomNumberGenerator);
studentsTDist = new StudentsTDistribution(RandomNumberGenerator);
triangularDist = new TriangularDistribution(RandomNumberGenerator);
weibullDist = new WeibullDistribution(RandomNumberGenerator);
poissonDist = new PoissonDistribution(RandomNumberGenerator);
// generator.randomGenerator = new MT19937Generator(seed);
}
public PositionSet3D getRandomPositionSet(int pointNum)
{
unchecked
{
int seed = (int)DateTime.Now.Ticks;
this.pointNum = pointNum;
LaplaceDistribution distributionX = new LaplaceDistribution(new StandardGenerator(seed++));
distributionX.Alpha = X_Alpha;
LaplaceDistribution distributionY = new LaplaceDistribution(new StandardGenerator(seed++));
distributionY.Alpha = Y_Alpha;
LaplaceDistribution distributionZ = new LaplaceDistribution(new StandardGenerator(seed++));
distributionZ.Alpha = Z_Alpha;
Random r = new Random();
for (int i = 0; i < clusterPointNum; i++)
{
distributionX.Mu = minMu + (float)(r.NextDouble() * (maxMu - minMu));
distributionY.Mu = minMu + (float)(r.NextDouble() * (maxMu - minMu));
distributionZ.Mu = minMu + (float)(r.NextDouble() * (maxMu - minMu));
RandomPositionSet3D randomPositionSet =
new RandomPositionSet3D((int)(pointNum / clusterPointNum), scale, distributionX, distributionY, distributionZ);
positionSet3D = (PositionSet3D)randomPositionSet;
}
}
return(positionSet3D);
}
public void ConstructorTest7()
{
var original = new LaplaceDistribution(location: 4, scale: 2);
var laplace = GeneralContinuousDistribution.FromDensityFunction(
original.Support, original.ProbabilityDensityFunction);
testLaplace(laplace);
}
public void TestLaplace()
{
ProbabilityDistribution normal = new LaplaceDistribution(location: 0, diversity: 1);
double[] tester = new double[100];
for (var i = 0; i < 100; i++)
{
tester[i] = normal.NextDouble();
}
string jsonResult = JsonConvert.SerializeObject(tester);
}
public void DistributionFunctionTest2()
{
var target = GeneralizedNormalDistribution.Laplace(location: 0.42, scale: 4.2);
var normal = new LaplaceDistribution(location: 0.42, scale: 4.2);
for (double x = -10; x < 10; x += 0.0001)
{
double actual = target.DistributionFunction(x);
double expected = normal.DistributionFunction(x);
Assert.AreEqual(expected, actual, 1e-15);
Assert.IsFalse(Double.IsNaN(actual));
}
}
public void MedianTest()
{
var laplace = new LaplaceDistribution(location: 2, scale: 0.42);
var target = GeneralContinuousDistribution.FromDensityFunction(
laplace.Support, laplace.ProbabilityDensityFunction);
Assert.AreEqual(target.Median, target.InverseDistributionFunction(0.5));
Assert.AreEqual(laplace.Median, target.Median, 1e-10);
target = GeneralContinuousDistribution.FromDistributionFunction(
laplace.Support, laplace.DistributionFunction);
Assert.AreEqual(target.Median, target.InverseDistributionFunction(0.5), 1e-10);
Assert.AreEqual(laplace.Median, target.Median, 1e-10);
}
public void ConstructorTest6()
{
var original = new LaplaceDistribution(location: 4, scale: 2);
var laplace = GeneralContinuousDistribution.FromDistributionFunction(
original.Support, original.DistributionFunction);
for (double i = -10; i < +10; i += 0.1)
{
double expected = original.ProbabilityDensityFunction(i);
double actual = laplace.ProbabilityDensityFunction(i);
Assert.IsTrue(expected.IsRelativelyEqual(actual, 1e-4));
}
testLaplace(laplace);
}
public void ConstructorTest2()
{
var laplace = new LaplaceDistribution(location: 4, scale: 2);
double mean = laplace.Mean; // 4.0
double median = laplace.Median; // 4.0
double var = laplace.Variance; // 8.0
double mode = laplace.Mode; // 4.0
double cdf = laplace.DistributionFunction(x: 0.27); // 0.077448104942453522
double pdf = laplace.ProbabilityDensityFunction(x: 0.27); // 0.038724052471226761
double lpdf = laplace.LogProbabilityDensityFunction(x: 0.27); // -3.2512943611198906
double ccdf = laplace.ComplementaryDistributionFunction(x: 0.27); // 0.92255189505754642
double icdf = laplace.InverseDistributionFunction(p: cdf); // 0.27
double hf = laplace.HazardFunction(x: 0.27); // 0.041974931360160776
double chf = laplace.CumulativeHazardFunction(x: 0.27); // 0.080611649844768624
string str = laplace.ToString(CultureInfo.InvariantCulture); // Laplace(x; μ = 4, b = 2)
Assert.AreEqual(4.0, mean);
Assert.AreEqual(4.0, median);
Assert.AreEqual(8.0, var);
Assert.AreEqual(4.0, mode);
Assert.AreEqual(0.080611649844768624, chf);
Assert.AreEqual(0.077448104942453522, cdf);
Assert.AreEqual(0.038724052471226761, pdf);
Assert.AreEqual(-3.2512943611198906, lpdf);
Assert.AreEqual(0.041974931360160776, hf);
Assert.AreEqual(0.92255189505754642, ccdf);
Assert.AreEqual(0.26999999840794775, icdf);
Assert.AreEqual("Laplace(x; μ = 4, b = 2)", str);
var range1 = laplace.GetRange(0.95);
var range2 = laplace.GetRange(0.99);
var range3 = laplace.GetRange(0.01);
Assert.AreEqual(-0.60517019072231026, range1.Min);
Assert.AreEqual(8.6051701894643209, range1.Max);
Assert.AreEqual(-3.8240460108561982, range2.Min);
Assert.AreEqual(11.824046011144626, range2.Max);
Assert.AreEqual(-3.8240460108561951, range3.Min);
Assert.AreEqual(11.824046011144626, range3.Max);
}
public void ConstructorTest6()
{
var original = new LaplaceDistribution(location: 4, scale: 2);
var laplace = GeneralContinuousDistribution.FromDistributionFunction(
original.Support, original.DistributionFunction);
for (double i = -10; i < +10; i += 0.1)
{
double expected = original.ProbabilityDensityFunction(i);
double actual = laplace.ProbabilityDensityFunction(i);
double diff = Math.Abs(expected - actual);
Assert.AreEqual(expected, actual, 1e-6);
}
testLaplace(laplace);
}
double Sample(LocalRandom random)
{
// NOTE: don't use an interface and OO to select, makes JSON serialization a big mess
switch (RateDistribution)
{
case RateDistribution.NormalDistribution:
return(NormalDistribution.Sample(random, Parameters[0], Parameters[1]));
case RateDistribution.LaplaceDistribution:
return(LaplaceDistribution.Sample(random, Parameters[0], Parameters[1]));
case RateDistribution.InflationModel:
return(InflationModel.Sample(random));
case RateDistribution.StockModel:
return(StockModel.Sample(random));
default:
throw new NotImplementedException("Unknown RateType in Rate.Sample");
}
}
public void LaplaceTest()
{
var target = GeneralizedNormalDistribution.Laplace(location: 0.42, scale: 4.2);
var normal = new LaplaceDistribution(location: 0.42, scale: 4.2);
test(target, normal);
var support = target.Support;
Assert.AreEqual(normal.Support.Min, support.Min);
Assert.AreEqual(normal.Support.Max, support.Max);
for (double i = 0.01; i <= 1.0; i += 0.01)
{
var actual = normal.GetRange(i);
var expected = normal.GetRange(i);
Assert.AreEqual(expected.Min, actual.Min);
Assert.AreEqual(expected.Max, actual.Max);
}
}
public void TestLaplaceDistribution()
{
double[][] para =
{
new double[] { 1.375, 0.5, 1.028426409720027345291384, 0.500000000000000000000000, 2.526292546497022842008996, 0.1000000000000000000000000 }
};
for (int i = 0; i < para.Length; i++)
{
var tester = new ContDistTester(para[i], delegate(double a, double b)
{
var ret = new LaplaceDistribution
{
Mu = a,
Alpha = b
};
return(ret);
}
);
tester.Test(1E-14);
}
}
public PositionSetEditSet getRandomPositionSet(int pointNum)
{
unchecked
{
int seed = (int)DateTime.Now.Ticks;
this.pointNum = pointNum;
LaplaceDistribution distributionX = new LaplaceDistribution(new StandardGenerator(seed++));
distributionX.Alpha = X_Alpha;
LaplaceDistribution distributionY = new LaplaceDistribution(new StandardGenerator(seed++));
distributionY.Alpha = Y_Alpha;
for (int i = 0; i < clusterPointNum; i++)
{
distributionX.Mu = RandomMaker.RapidBetween(minMu, maxMu);
distributionY.Mu = RandomMaker.RapidBetween(minMu, maxMu);
RandomPositionSet randomPositionSet =
new RandomPositionSet((int)(pointNum / clusterPointNum), 1000, distributionX, distributionY);
positionSetEditSet.AddPositionSet(randomPositionSet);
}
}
return(positionSetEditSet);
}
public void MedianTest()
{
var target = new LaplaceDistribution(location: 2, scale: 0.42);
Assert.AreEqual(target.Median, target.InverseDistributionFunction(0.5));
}
/// <summary>
/// Sets the distribution for operations using the current genrator
/// </summary>
/// <param name="distx">Distx.</param>
public void setDistribution(distributions distx, Dictionary <string, double> args)
{
//TODO check arguments to ensure they are making a change to the distribution
//otherwise throw an exception see laplace as a example of implementing this
switch (distx)
{
case distributions.Bernoili:
BernoulliDistribution x0 = new BernoulliDistribution(gen);
if (args.ContainsKey("alpha"))
{
x0.Alpha = args["alpha"];
}
else
{
throw new System.Exception("for Bernoili distribution you must provide an alpha");
}
dist = x0;
break;
case distributions.Beta:
BetaDistribution x1 = new BetaDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x1.Alpha = args["alpha"];
x1.Beta = args["beta"];
}
else
{
throw new System.Exception(" for beta distribution you must provide alpha and beta");
}
dist = x1;
break;
case distributions.BetaPrime:
BetaPrimeDistribution x2 = new BetaPrimeDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x2.Alpha = args["alpha"];
x2.Beta = args["beta"];
}
else
{
throw new System.Exception(" for betaPrime distribution you must provide alpha and beta");
}
dist = x2;
break;
case distributions.Cauchy:
CauchyDistribution x3 = new CauchyDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("gamma"))
{
x3.Alpha = args["alpha"];
x3.Gamma = args["gamma"];
}
else
{
throw new System.Exception("for cauchy dist you must provide alpha and gamma");
}
dist = x3;
break;
case distributions.Chi:
ChiDistribution x4 = new ChiDistribution(gen);
if (args.ContainsKey("alpha"))
{
x4.Alpha = (int)args["alpha"];
}
else
{
throw new System.Exception("for chi you must provide alpha");
}
dist = x4;
break;
case distributions.ChiSquared:
ChiSquareDistribution x5 = new ChiSquareDistribution(gen);
if (args.ContainsKey("alpha"))
{
x5.Alpha = (int)args["alpha"];
}
else
{
throw new System.Exception("for chiSquared you must provide alpha");
}
dist = x5;
break;
case distributions.ContinuousUniform:
ContinuousUniformDistribution x6 = new ContinuousUniformDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x6.Alpha = args["alpha"];
x6.Beta = args["beta"];
}
else
{
throw new System.Exception("for ContinuousUniform you must provide alpha and beta");
}
dist = x6;
break;
case distributions.DiscreteUniform:
DiscreteUniformDistribution x7 = new DiscreteUniformDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x7.Alpha = (int)args["alpha"];
x7.Beta = (int)args["beta"];
}
else
{
throw new System.Exception("for discrete uniform distribution you must provide alpha and beta");
}
dist = x7;
break;
case distributions.Erlang:
ErlangDistribution x8 = new ErlangDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("lambda"))
{
x8.Alpha = (int)args["alpha"];
x8.Lambda = (int)args["lambda"];
}
else
{
throw new System.Exception("for Erlang dist you must provide alpha and lambda");
}
dist = x8;
break;
case distributions.Exponential:
ExponentialDistribution x9 = new ExponentialDistribution(gen);
if (args.ContainsKey("lambda"))
{
x9.Lambda = args["lambda"];
}
else
{
throw new System.Exception("for exponential dist you must provide lambda");
}
dist = x9;
break;
case distributions.FisherSnedecor:
FisherSnedecorDistribution x10 = new FisherSnedecorDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x10.Alpha = (int)args["alpha"];
x10.Beta = (int)args["beta"];
}
else
{
throw new System.Exception("for FisherSnedecor you must provide alpha and beta");
}
dist = x10;
break;
case distributions.FisherTippett:
FisherTippettDistribution x11 = new FisherTippettDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("mu"))
{
x11.Alpha = args["alpha"];
x11.Mu = args["mu"];
}
else
{
throw new System.Exception("for FisherTippets you must provide alpha and mu");
}
dist = x11;
break;
case distributions.Gamma:
GammaDistribution x12 = new GammaDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("theta"))
{
x12.Alpha = args["alpha"];
x12.Theta = args["theta"];
}
else
{
throw new System.Exception("for Gamma dist you must provide alpha and theta");
}
dist = x12;
break;
case distributions.Geometric:
GeometricDistribution x13 = new GeometricDistribution(gen);
if (args.ContainsKey("alpha"))
{
x13.Alpha = args["alpha"];
}
else
{
throw new System.Exception("Geometric distribution requires alpha value");
}
dist = x13;
break;
case distributions.Binomial:
BinomialDistribution x14 = new BinomialDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x14.Alpha = args["alpha"];
x14.Beta = (int)args["beta"];
}
else
{
throw new System.Exception("binomial distribution requires alpha and beta");
}
dist = x14;
break;
case distributions.None:
break;
case distributions.Laplace:
LaplaceDistribution x15 = new LaplaceDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("mu"))
{
if (x15.IsValidAlpha(args["alpha"]) && x15.IsValidMu(args["mu"]))
{
x15.Alpha = args["alpha"];
x15.Mu = args["mu"];
}
else
{
throw new ArgumentException("alpha must be greater than zero");
}
}
else
{
throw new System.Exception("Laplace dist requires alpha and mu");
}
dist = x15;
break;
case distributions.LogNormal:
LognormalDistribution x16 = new LognormalDistribution(gen);
if (args.ContainsKey("mu") && args.ContainsKey("sigma"))
{
x16.Mu = args["mu"];
x16.Sigma = args["sigma"];
}
else
{
throw new System.Exception("lognormal distribution requires mu and sigma");
}
dist = x16;
break;
case distributions.Normal:
NormalDistribution x17 = new NormalDistribution(gen);
if (args.ContainsKey("mu") && args.ContainsKey("sigma"))
{
x17.Mu = args["mu"];
x17.Sigma = args["sigma"];
}
else
{
throw new System.Exception("normal distribution requires mu and sigma");
}
dist = x17;
break;
case distributions.Pareto:
ParetoDistribution x18 = new ParetoDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x18.Alpha = args["alpha"];
x18.Beta = args["beta"];
}
else
{
throw new System.Exception("pareto distribution requires alpha and beta");
}
dist = x18;
break;
case distributions.Poisson:
PoissonDistribution x19 = new PoissonDistribution(gen);
if (args.ContainsKey("lambda"))
{
x19.Lambda = args["lambda"];
}
else
{
throw new System.Exception("Poisson distribution requires lambda");
}
dist = x19;
break;
case distributions.Power:
PowerDistribution x20 = new PowerDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta"))
{
x20.Alpha = args["alpha"];
x20.Beta = args["beta"];
}
else
{
throw new System.Exception("Power dist requires alpha and beta");
}
dist = x20;
break;
case distributions.RayLeigh:
RayleighDistribution x21 = new RayleighDistribution(gen);
if (args.ContainsKey("sigma"))
{
x21.Sigma = args["sigma"];
}
else
{
throw new System.Exception("Rayleigh dist requires sigma");
}
dist = x21;
break;
case distributions.StudentsT:
StudentsTDistribution x22 = new StudentsTDistribution(gen);
if (args.ContainsKey("nu"))
{
x22.Nu = (int)args["nu"];
}
else
{
throw new System.Exception("StudentsT dist requirres nu");
}
dist = x22;
break;
case distributions.Triangular:
TriangularDistribution x23 = new TriangularDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("beta") && args.ContainsKey("gamma"))
{
x23.Alpha = args["alpha"];
x23.Beta = args["beta"];
x23.Gamma = args["gamma"];
}
else
{
throw new System.Exception("Triangular distribution requires alpha, beta and gamma");
}
dist = x23;
break;
case distributions.WeiBull:
WeibullDistribution x24 = new WeibullDistribution(gen);
if (args.ContainsKey("alpha") && args.ContainsKey("lambda"))
{
x24.Alpha = args["alpha"];
x24.Lambda = args["lambda"];
}
else
{
throw new System.Exception("WeiBull dist requires alpha and lambda");
}
dist = x24;
break;
default:
throw new NotImplementedException("the distribution you want has not yet been implemented " +
"you could help everyone out by going and implementing it");
}
}