{ "id": "cond-mat/0004196", "version": "v1", "published": "2000-04-12T13:10:06.000Z", "updated": "2000-04-12T13:10:06.000Z", "title": "Relevance of memory in Minority Games", "authors": [ "Damien Challet", "Matteo Marsili" ], "comment": "10 pages, 9 figures, using RevTex", "doi": "10.1103/PhysRevE.62.1862", "categories": [ "cond-mat.stat-mech", "cond-mat.dis-nn" ], "abstract": "By considering diffusion on De Bruijn graphs, we study in details the dynamics of the histories in the Minority Game, a model of competition between adaptative agents. Such graphs describe the structure of temporal evolution of $M$ bits strings, each node standing for a given string, i.e. a history in the Minority Game. We show that the frequency of visit of each history is not given by $1/2^M$ in the limit of large $M$ when the transition probabilities are biased. Consequently all quantities of the model do significantly depend on whether the histories are real, or uniformly and randomly sampled. We expose a self-consistent theory of the case of real histories, which turns out to be in very good agreement with numerical simulations.", "revisions": [ { "version": "v1", "updated": "2000-04-12T13:10:06.000Z" } ], "analyses": { "keywords": [ "minority game", "bits strings", "real histories", "bruijn graphs", "transition probabilities" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. E" }, "note": { "typesetting": "RevTeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable" } } }