The major aim of this empirical study is to estimate the volatility time series returns for a cluster of international … capture volatility clusters and changes in long and short term volatility impact. The econometric approch is based on randomly … using GARCH family models for estimating financial market volatility. Moreover, the sampled time interval includes two …

breaks) in the volatility of financial time series. Comparative study of three techniques: ICSS, NPCPM and Cheng's algorithm … breaks in volatility, while Cheng's technique works well only when a single break occurs. …