The paper demonstrates how discrete time credit rating data (e.g. annual observations) can be analysed by means of a continuous-time Markov model. Two methods for estimating the transition intensities are given: the EM algorithm and an MCMC approach. The estimated transition intensities can be...

We study the structure of point processes N with the property that the vary in a finite-dimensional space where [theta]t is the shift and the [sigma]-field generated by the counting process up to time t. This class of point processes is strictly larger than Neuts' class of Markovian arrival...

We consider a multidimensional diffusion X with drift coefficient b(Xt,[alpha]) and diffusion coefficient [epsilon]a(Xt,[beta]) where [alpha] and [beta] are two unknown parameters, while [epsilon] is known. For a high frequency sample of observations of the diffusion at the time points k/n,...