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Update estimation of diffusion parameter observed at high frequency

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 Added by Yusuke Shimizu
 Publication date 2015
and research's language is English




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We propose an update estimation method for a diffusion parameter from high-frequency dependent data under a nuisance drift element. We ensure the asymptotic equivalence of the estimator to the corresponding quasi-MLE, which has the asymptotic normality and the asymptotic efficiency. We give a simulation example to illustrate the theory.



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