scholarly journals Evolutionary dynamics and the phase structure of the minority game

2004 ◽  
Vol 69 (6) ◽  
Author(s):  
Baosheng Yuan ◽  
Kan Chen
Keyword(s):  
Phase Structure ◽  
Evolutionary Dynamics ◽  
Minority Game

EVOLUTIONARY DYNAMICS OF COMPETING BOOLEAN NETWORK AGENTS

2007 ◽  
Vol 21 (23n24) ◽  
pp. 4041-4047
Author(s):  
BING-HONG WANG ◽  
BAOSHENG YUAN
Keyword(s):  
Phase Structure ◽  
Boolean Network ◽  
Evolutionary Dynamics ◽  
Random Choice ◽  
Directed Networks ◽  
Connection Number ◽  
Minority Games ◽  
Evolutionary Scheme ◽  
Underlying Network

We investigate the dynamics of network minority games on Kauffman's NK networks (Kauffman nets) and growing directed networks (GDNets). We show that the dynamics and the associated phase structure of the game depend crucially on the structure of the underlying network. The dynamics on GDNets is very stable for all values of the connection number K, in contrast to the dynamics on Kauffman's NK networks, which becomes chaotic when K > Kc = 2. For Kauffman nets with K > 3, the evolutionary scheme has no effect on the dynamics (it remains chaotic) and the performance of the MG resembles that of a random choice game (RCG).

Variable Payoffs in the Minority Game

2000 ◽  
Vol 03 (01n04) ◽  
pp. 271-281 ◽  
Author(s):  
Robert Savit ◽  
Yi Li ◽  
Adrian Vandeemen
Keyword(s):  
Phase Transition ◽  
Phase Structure ◽  
Wealth Distribution ◽  
Minority Group ◽  
Biological Systems ◽  
Payoff Function ◽  
Scaling Behavior ◽  
Minority Game ◽  
Strategy Space

In the standard minority game, each agent in the minority group receives the same payoff regardless of the size of the minority group. Of great interest for real social and biological systems are cases in which the payoffs to members of the minority group depend on the size of the minority group. This latter includes the fixed sum game. We find, remarkably, that the phase structure and general scaling behavior of the standard minority game persists when the payoff function depends on the size of the minority group. There is still a phase transition at the same value of z, the ratio of the dimension of the strategy space to the number of agents playing the game. We explain the persistence of the phase structure and argue that it is due to the absence of temporal cooperation in the dynamics of the minority game. We also discuss the behavior of average agent wealth and the wealth distribution in these variable payoff games.

Evolutionary dynamics modeling of symbolic social network structure equilibrium

2020 ◽  
Vol 17 (10) ◽  
pp. 229-240
Author(s):  
Weijin Jiang ◽  
Sijian Lv ◽  
Yirong Jiang ◽  
Jiahui Chen ◽  
Fang Ye ◽  
...  
Keyword(s):  
Social Network ◽  
Network Structure ◽  
Evolutionary Dynamics ◽  
Dynamics Modeling ◽  
Social Network Structure

The Evolutionary Dynamics of Decision Rule Selection

2017 ◽  
Author(s):  
Michael Laver ◽  
Ernest Sergenti
Keyword(s):  
Decision Rule ◽  
Positive Feedback ◽  
Party System ◽  
Evolutionary Dynamics ◽  
Decision Rules ◽  
Past Performance ◽  
Party Leaders ◽  
Track Record ◽  
Long Run ◽  
Survival Of The Fittest

This chapter extends the survival-of-the-fittest evolutionary environment to consider the possibility that new political parties, when they first come into existence, do not pick decision rules at random but instead choose rules that have a track record of past success. This is done by adding replicator-mutator dynamics to the model, according to which the probability that each rule is selected by a new party is an evolving but noisy function of that rule's past performance. Estimating characteristic outputs when this type of positive feedback enters the dynamic model creates new methodological challenges. The simulation results show that it is very rare for one decision rule to drive out all others over the long run. While the diversity of decision rules used by party leaders is drastically reduced with such positive feedback in the party system, and while some particular decision rule is typically prominent over a certain period of time, party systems in which party leaders use different decision rules are sustained over substantial periods.

The effectiveness of web advertising, its legal regulation and the problem of information systems security

2020 ◽  
Vol 4 (3(12)) ◽  
pp. 1-15
Author(s):  
Samira Ilgarovna Proshkina ◽  
Keyword(s):  
Information Systems ◽  
Computational Models ◽  
Evolutionary Dynamics ◽  
Legal Regulation ◽  
Information Systems Security ◽  
Systematic Analysis ◽  
Web Advertising ◽  
Systems Security ◽  
Business Structures ◽  
Display Location

The work is devoted to an urgent problem — the study of the evolutionary dynamics of web advertising, its assessment and effectiveness, as well as the problem of legal support and security of information systems. The goal is a systematic analysis of web advertising in an unsafe information field, its relevance and criteria for assessing marketing efforts, minimizing risks, maximizing additional profits and image. Research hypothesis — the effectiveness of web advertising is determined by the form of advertising, place of display, location of the block, model of calculation of the advertising campaign. An approach based on the establishment of preferences, partnership between the state and business structures is emphasized. It takes into account the COVID-19 pandemic, a slowdown in the pace and features of the evolution of business companies in self-isolation. The subtasks of influence on the advertising efficiency of the site’s features and web advertising are highlighted. A comprehensive analysis of information and logical security and computational models of web advertising companies was also carried out.

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