Estimate noise intensity (nv) for non-DMCs, using maximum likelihood estmiation.
estimateNu(z, phi, maxit = 50, beginP = 20)
A matrix. Observated mixed turmor samples.
mode of beta-values of each row in pure nomral samples y.
A postive integer. The iteration number used in maximum likelihood.
A number, where the method start to search from for root.
return estimated nv (noise intensity)