Modification of the classic logLik which accounts for the estimated degrees of freedom used in SemiParBIVProbit objects.
This function is provided so that information criteria work correctly with SemiParBIVProbit objects by using the correct degrees
of freedom.
References
Radice R., Marra G. and M. Wojtys (submitted), Copula Regression Spline Models for Binary Outcomes with Application in Health Care Utilization.