Abstract:The aim of this paper is to develop a general, unified approach, based on some partial estimation functions which we call "Z-process", to the change point problems. The method proposed can be applied not only to ergodic models but also to some models where the Fisher information matrix is random. Applications to some concrete models, including especially a parametric model for volatilities of diffusion processes are presented. Simulations for randomly time-transformed Brownian bridge process appearing as the l… Show more
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