232 citations · 680 across the 9 of their papers we have counts for
9 papers
Endogenous versus Exogenous Crashes in Financial Markets
A. Johansen, D. Sornette
We perform an extended analysis of the distribution of drawdowns in the two leading exchange markets (US dollar against the Deutsmark and against the Yen), in the major world stock…
Significance of log-periodic precursors to financial crashes
D. Sornette, A. Johansen
We clarify the status of log-periodicity associated with speculative bubbles preceding financial crashes. In particular, we address Feigenbaum's [2001] criticism and show how it ca…
Critical Ruptures
Anders Johansen, Didier Sornette
The fracture of materials is a catastrophic phenomenon of considerable technological and scientific importance. Here, we analysed experiments designed for industrial applications i…
Evaluation of the quantitative prediction of a trend reversal on the Japanese stock market in 1999
Anders Johansen, Didier Sornette
In January 1999, the authors published a quantitative prediction that the Nikkei index should recover from its 14 year low in January 1999 and reach a year later. T…
Artifactual log-periodicity in finite size data: Relevance for earthquake aftershocks
Y. Huang, A. Johansen, M. W. Lee +2
The recently proposed discrete scale invariance and its associated log-periodicity are an elaboration of the concept of scale invariance in which the system is scale invariant only…
Financial ``Anti-Bubbles'': Log-Periodicity in Gold and Nikkei collapses
A. Johansen, D. Sornette
We propose that imitation between traders and their herding behaviour not only lead to speculative bubbles with accelerating over-valuations of financial markets possibly followed…