public Metropolis(Func<List<double>, double> probability, ParameterRoot parameters, RandomNumberGenerator rng)
{
this.probability = probability;
this.parameters = parameters;
this.rng = rng;
}
public Parameter(double value, double variance, RandomNumberGenerator rng = null)
{
this.value = value;
this.variance = variance;
this.rng = rng ?? new RandomNumberGenerator();
}