Müller, Hans-Georg; Sen, Rituparna; Stadtmüller, Ulrich - In: Journal of Econometrics 165 (2011) 2, pp. 233-245
We introduce a functional volatility process for modeling volatility trajectories for high frequency observations in financial markets and describe functional representations and data-based recovery of the process from repeated observations. A study of its asymptotic properties, as the frequency...