public double Tau { get; set; }

Public Property Tau As Double

public:
property double Tau {
	double get ();
	void set (double value);
}

The Levenberg Marquardt algorithm is an iterative algorithm that takes a step in the direction of decreasing function values on each iteration. The initial step size is determined by the parameter tau. Tau related to the size of the elements in the Jacobian matrix of the minimized function evaluated at the starting point, x0, of the iteration. The algorithm is not very sensitive to the choice of tau, but as a rule of thumb, one should use a small value, e.g. tau = 10^-6, is x0 is believed to be a good approximation to the final solution x. Otherwise, use tau = 10^-3 or even tau = 1. The default value is tau = 10^-3.