772 citations · 5.5k across the 80 of their papers we have counts for
13 papers · 1 filter
Importance of Positive Feedbacks and Over-confidence in a Self-Fulfilling Ising Model of Financial Markets
Didier Sornette, Wei-Xing Zhou
Following a long tradition of physicists who have noticed that the Ising model provides a general background to build realistic models of social interactions, we study a model of f…
Shape complexity and fractality of fracture surfaces of swelled isotactic polypropylene with supercritical carbon dioxide
Wei-Xing Zhou, Bin Li, Tao Liu +3
We have investigated the fractal characteristics and shape complexity of the fracture surfaces of swelled isotactic polypropylene Y1600 in supercritical carbon dioxide fluid throug…
Non-parametric Determination of Real-Time Lag Structure between Two Time Series: the "Optimal Thermal Causal Path" Method
D. Sornette, W. -X. Zhou
We introduce a novel non-parametric methodology to test for the dynamical time evolution of the lag-lead structure between two arbitrary time series. The method consists in constru…
Bubble, Critical Zone and the Crash of Royal Ahold
G. Broekstra, D. Sornette, W. -X. Zhou
Our analysis of financial data, in terms of super-exponential growth, suggests that the seed of the 2002/03 crisis of the Dutch supermarket giant AHOLD was planted in 1996. It beca…
Discrete Hierarchical Organization of Social Group Sizes
W. -X. Zhou, D. Sornette, R. A. Hill +1
The ``social brain hypothesis'' for the evolution of large brains in primates has led to evidence for the coevolution of neocortical size and social group sizes. Extrapolation of t…
Does randomness in multifractals imply latent dimensions?
Wei-Xing Zhou, Zun-Hong Yu
Negative, or latent, dimensions have always attracted a strong interest since their discovery. When randomness is introduced in multifractals, the sample-to-sample fluctuations of…