By Alan Kirman
This ebook analyses events during which person brokers, who may be varied from one another, engage and convey behaviour at the mixture point which doesn't correspond to that of the common actor. This ends up in mixture results which might be most unlikely to give an explanation for in a extra typical technique. Aggregation generates constitution and, therefore, interplay and heterogeneity will be dealt with and we now not need to depend upon the over-simplified aid of the behaviour of the economic climate to that of a "rational" person.
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Additional info for Economics with Heterogeneous Interacting Agents
Example text
This level indicates if a given agent adopts (+ 1) or doesn't adopt (-1) the considered innovation or the technological standard. We draw the way agents are interconnected by describing a matrix W = (Wij )(i,j)e/2 whose general term Wij measures the strength of the connection from j to i. Wij is a valuation of the way i catches the weight of j in its decision taking, and corresponds to the idea that i makes for itself from j, according to its own system of values. Such an influence matrix has consequently no reason to be considered as symmetrical.
In a recent model, formally represented by a neural network, we have introduced a relational learning that constitutes a way to set up an endogenous network evolution (Plouraboue, Steyer and Zimmermann, 1998). We proved the existence of a self organised criticality phenomenon, where some agents acquire key-positions within the network that bring them a strong structural capacity of influence over the whole population of potential adopters. In this paper, we study the way how network auto-organisation can lead, under given conditions, to a critical state characterised by macroscopic effects generated from microscopic impulses at the level of the individual agent.
Strogatz , Nature, 393, 440, (1998). G. Weisbuch and D. Stauffer "Hits and Flops Dynamics" Physica A, 287, 3-4, 563-576, (2000). G. Weisbuch and S. Solomon "Self Organized Percolation and Critical Sales Fluctuations" Int. Jour. Mod. Phys. 6, 1263-1272, (2000). , 2 rue de la ChariM 13002 Marseille, France. fr - fax number: 04 91 90 02 27 - phone number: 04 91 14 0723. Abstract: We introduce negative relationships in a network of social influence whose agents cope with a binary opinion concerning two competing standards, and we explore the possible collective dynamics.