Density() public method

분포의 확률 밀도
public Density ( double x ) : double
x double
return double
Normal Class Documentation
Example #1
0
        /// <summary>
        /// 분포의 확률 밀도
        /// </summary>
        /// <param name="x"></param>
        /// <returns></returns>
        public double Density(double x)
        {
            // TODO JVG we can probably do a better job for Cauchy special case
            if (double.IsPositiveInfinity(_dof))
            {
                return(Normal.Density(_location, _scale, x));
            }

            var d = (x - _location) / _scale;

            return(SpecialFunctions.Gamma((_dof + 1.0) / 2.0)
                   * Math.Pow(1.0 + (d * d / _dof), -0.5 * (_dof + 1.0))
                   / SpecialFunctions.Gamma(_dof / 2.0)
                   / Math.Sqrt(_dof * Math.PI)
                   / _scale);
        }