/// <summary>
/// Generates a random vector of observations from the
/// Beta distribution with the given parameters.
/// </summary>
///
/// <param name="alpha">The shape parameter α (alpha).</param>
/// <param name="beta">The shape parameter β (beta).</param>
/// <param name="min">The minimum possible value a.</param>
/// <param name="max">The maximum possible value b.</param>
/// <param name="samples">The number of samples to generate.</param>
/// <param name="result">The location where to store the samples.</param>
/// <param name="source">The random number generator to use as a source of randomness.
/// Default is to use <see cref="Accord.Math.Random.Generator.Random"/>.</param>
///
/// <returns>An array of double values sampled from the specified Beta distribution.</returns>
///
public static double[] Random(double alpha, double beta, double min, double max, int samples, double[] result, Random source)
{
BetaDistribution.Random(alpha, beta, samples, result, source);
if (min != 0 || max != 1)
{
for (int i = 0; i < result.Length; i++)
{
result[i] = result[i] * (max - min) + min;
}
}
return(result);
}
/// <summary>
/// Generates a random vector of observations from the
/// Beta distribution with the given parameters.
/// </summary>
///
/// <param name="alpha">The shape parameter α (alpha).</param>
/// <param name="beta">The shape parameter β (beta).</param>
/// <param name="min">The minimum possible value a.</param>
/// <param name="max">The maximum possible value b.</param>
/// <param name="samples">The number of samples to generate.</param>
///
/// <returns>An array of double values sampled from the specified Beta distribution.</returns>
///
public static double[] Random(double alpha, double beta, double min, double max, int samples)
{
double[] r = BetaDistribution.Random(alpha, beta, samples);
if (min != 0 || max != 1)
{
for (int i = 0; i < r.Length; i++)
{
r[i] = r[i] * (max - min) + min;
}
}
return(r);
}
/// <summary>
/// Generates a random observation from a
/// Beta distribution with the given parameters.
/// </summary>
///
/// <param name="alpha">The shape parameter α (alpha).</param>
/// <param name="beta">The shape parameter β (beta).</param>
/// <param name="min">The minimum possible value a.</param>
/// <param name="max">The maximum possible value b.</param>
/// <param name="source">The random number generator to use as a source of randomness.
/// Default is to use <see cref="Accord.Math.Random.Generator.Random"/>.</param>
///
/// <returns>A random double value sampled from the specified Beta distribution.</returns>
///
public static double Random(double alpha, double beta, double min, double max, Random source)
{
double r = BetaDistribution.Random(alpha, beta, source);
return(r * (max - min) + min);
}
