The primary purpose of the study is to identify and measure the properties of asset bubbles, volatility clustering, and … empirical methods; the LPPL model to identify asset bubbles, the DCC-GARCH model to measure volatility clustering, and the …

Firstly, we use the Multi-Scale LPPLS Confidence Indicator approach to detectboth positive and negative bubbles at … that, our bubbles indicators,particularly when both positive and negative bubbles are considered simultaneously …