title: Solvable stochastic dealer models for financial markets.
abstract: We introduce solvable stochastic dealer models, which can reproduce basic empirical laws of financial markets such as the power law of price change. Starting from the simplest model that is almost equivalent to a Poisson random noise generator, the model becomes fairly realistic by adding only two effects: the self-modulation of transaction intervals and a forecasting tendency, which uses a moving average of the latest market price changes. Based on the present microscopic model of markets, we find a quantitative relation with market potential forces, which have recently been discovered in the study of market price modeling based on random walks.
authors.affiliation: Department of Computational Intelligence and Systems Science, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8502, Japan. yamada@smp.dis.titech.ac.jp
authors.forename: Kenta
authors.initials: K
authors.lastname: Yamada
authors.forename: Hideki
authors.initials: H
authors.lastname: Takayasu
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Ito
authors.forename: Misako
authors.initials: M
authors.lastname: Takayasu