When high-frequency data is available, in the context of a stochastic volatility model, realised absolute variation can estimate integrated spot volatility. A central limit theory enables us to do filtering and smoothing using model-based and model-free approaches in order to improve the precision of these estimators. Although the absolute values are empirically attractive as they are less sensitive to possible large movements in high-frequency data, realised absolute variation does not estimate integrated variance. Some problems arise when using a finite number of intra-day observations, as explained here.
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Paper provided by Banco de México in its series Working Papers with number
2006-13.
Find related papers by JEL classification: C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation G19 - Financial Economics - - General Financial Markets - - - Other
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