Zhou, W.-X.; Sornette, D. - In: The European Physical Journal B - Condensed Matter and … 55 (2007) 2, pp. 175-181
We study a dynamical Ising-like model of agents' opinions (buy or sell) with learning, in which the coupling coefficients are re-assessed continuously in time according to how past external news (time-varying magnetic field) have explained realized market returns. By combining herding, the...