Internal function of sporm for calculating \(V_\theta(t)\).
V.theta(t, N, theta, lambda)vector of numbers
integer N=m+n
the value of the proportinality parameter \(\theta\)
mixture proportion \(\lambda=m/N\)
Returns the value of \(V_\theta(t)\).
Zhong Guan and Cheng Peng (2011), "A rank-based empirical likelihood approach to two-sample proportional odds model and its goodness-of-fit", Journal of Nonparametric Statistics, to appear.