Self organization in a minority game: the role of memory and a probabilistic approach

A minority game whose strategies are given by probabilities p, is replaced by a 'simplified' version that makes no use of memories at all. Numerical r esults show that the corresponding distribution functions are indistinguish able. A related approach, using a random walk formulation, allows us to ide ntify the origin of correlations and self-organization in the model, and to understand their disappearance for a different strategy's update rule, as pointed out in a previous work. (C) 2000 Elsevier Science B.V. All rights r eserved.