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Quantitative Finance · शब्दावली

Two-scales realised variance क्या है?

Definition 21.5 Quantitative Methods · अध्याय 21 — High-Frequency Econometrics

The two-scales realised variance (Zhang, Mykland and Aït-Sahalia, 2005) averages the realised variances of the KK offset sparse grids and subtracts the noise bias estimated from the full grid: TSRV=RV‾(K)−(nˉ/n)RV(all)\mathrm{TSRV} = \overline{\mathrm{RV}}^{(K)} - (\bar n/n)\mathrm{RV}^{(\mathrm{all})}, nˉ=(n−K+1)/K\bar n = (n - K + 1)/K.

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