Zhao, Dongshuai; Sornette, Didier - 2021
more than two decades, we show that a LPPLS-based “bubble confidence indicator” allows one to diagnose ex-ante the presence … of a bubble. Using superposed epoch analysis, we find an excellent timing performance of price regime shifts, and more so …, the larger the bubble confidence indicator. Moreover, we identify two classes of regime shifts following an accelerated …