The Fourier estimation method with positive semi-definite estimators
classification
💱 q-fin.ST
math.STstat.TH
keywords
estimatorsestimationfouriermethodalwayscomputationalcontinuouscost
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In this paper we present a slight modification of the Fourier estimation method of the spot volatility (matrix) process of a continuous It\^o semimartingale where the estimators are always non-negative definite. Since the estimators are factorized, computational cost will be saved a lot.
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