Change point estimation for the telegraph process observed at discrete times

Details Change point estimation for the telegraph process observed at discrete times Change point estimation for the telegraph process observed at discrete times

2007-05-03

arxiv.org/abs/0705.0503v1

Mathematics

Statistics Theory

Scientific paper

The telegraph process models a random motion with finite velocity and it is usually proposed as an alternative to diffusion models. The process describes the position of a particle moving on the real line, alternatively with constant velocity $+ v$ or $-v$. The changes of direction are governed by an homogeneous Poisson process with rate $\lambda >0.$ In this paper, we consider a change point estimation problem for the rate of the underlying Poisson process by means of least squares method. The consistency and the rate of convergence for the change point estimator are obtained and its asymptotic distribution is derived. Applications to real data are also presented.

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