Before revision:  The results show that the LPPLS confidence indicator based on the adaptive multilevel time series detection methodology have not only an outstanding performance to effectively detect the bubbles and accurately forecast the bubble crashes, but can also monitor the development and the crash of bubbles even if a bubble exists in a short time.
After revision:  The results show that the LPPLS confidence indicator based on the adaptive multilevel time series detection methodology have not only an outstanding performance to effectively detect the bubbles and accurately forecast the bubble crashes, even if a bubble exists in a short time.