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Adaptation, Noise, and Self-Organizing Systems papers — page 3

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Totalistic two-dimensional cellular automata exhibiting global periodic behavior
We have determined families of two-dimensional deterministic totalistic cellular automaton rules whose stationary density of active sites exhibits a period two in time. Each family of deterministic…
Nino Boccara, Michel RogerMar 29, 1999
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Correlated random walks with a finite memory range
We study a family of correlated one-dimensional random walks with a finite memory range M.These walks are extensions of the Taylor's walk as investigated by Goldstein, which has a memory range…
Roger Bidaux, Nino BoccaraMar 26, 1999
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Evolution in Minority Games I. Games with a Fixed Strategy Space
In this paper we study the minority game in the presence of evolution. In particular, we examine the behavior in games in which the dimension of the strategy space, m, is the same for all agents and…
Yi Li, Rick Riolo, Robert SavitMar 26, 1999
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Characterizing self-organization and coevolution by ergodic invariants
In addition to the emergent complexity of patterns that appears when many agents come in interaction, it is also useful to characterize the dynamical processes that lead to their self-organization. A…
R. Vilela MendesMar 25, 1999
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Neutral Evolution of Mutational Robustness
We introduce and analyze a general model of a population evolving over a network of selectively neutral genotypes. We show that the population's limit distribution on the neutral network is…
Erik van Nimwegen, James P. Crutchfield, Martijn HuynenMar 18, 1999
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Replication Error and Time Evolution of a Self-Replicating System
A self-replicating system where the elements belonging to a solution category can replicate themselves by copying their own informations, is considered. The information carried by each element is…
Dongsu BakMar 18, 1999
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Mechanism of Self-regulation in a Simple Model of Hierarchically Organized Market
We propose a model for a market which structure is of the tree form. Each branch of the tree is composed by identical firms, its root (the branch of the first level) is formed by the firms producing…
V. V. Gafiychuk, I. A. Lubashevsky, Yu. L. KlimontovichMar 16, 1999
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Evolution of genetic organization in digital organisms
We examine the evolution of expression patterns and the organization of genetic information in populations of self-replicating digital organisms. Seeding the experiments with a linearly expressed…
Charles Ofria, Christoph AdamiMar 6, 1999
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The Origin of the RNA World: a Kinetic Model
The aims of this paper are to propose, construct and analyse microscopic kinetic models for the emergence of long chains of RNA from monomeric beta-D-ribonucleotide precursors in prebiotic…
Jonathan A. D. Wattis, Peter V. CoveneyMar 4, 1999
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The Evolutionary Unfolding of Complexity
We analyze the population dynamics of a broad class of fitness functions that exhibit epochal evolution---a dynamical behavior, commonly observed in both natural and artificial evolutionary…
James P. Crutchfield, Erik van NimwegenFeb 26, 1999
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A General Approach to the Modelling of Trophic Chains
Based on the law of mass action (and its microscopic foundation) and mass conservation, we present here a method to derive consistent dynamic models for the time evolution of systems with an…
Rui Dilao, Tiago DomingosFeb 10, 1999
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The Hamming Distance in the Minority Game
We investigate different versions of the minority game, a toy model for agents buying and selling a commodity. The Hamming distance between the strategies used by agents to take decisions is…
R. D'hulst, G. J. RodgersFeb 9, 1999
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Stochastic group selection model for the evolution of altruism
We study numerically and analytically a stochastic group selection model in which a population of asexually reproducing individuals, each of which can be either altruist or non-altruist, is…
Ana T. C. Silva, J. F. FontanariJan 25, 1999
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Towards Behaviorly Realistic Simulations of the Stock Market (Traders with a Soul)
The price fluctuations in the financial markets are the result of the individual operations by many individual investors. However for many decades the finacial theory did not use directly this…
Sorin SolomonJan 23, 1999
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Autocatalytic closure in a cognitive system: A tentative scenario for the origin of culture
This paper presents a speculative model of the cognitive mechanisms underlying the transition from episodic to mimetic (or memetic) culture with the arrival of Homo erectus, which Donald [1991]…
L. GaboraJan 18, 1999
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The Evolutionary Biology of Ourselves: Unit Requirements and Organizational Change in United States History
Researchers have proposed that the distinction between so-called "simple" and "complex" societies can be expressed by an increase in the number of levels at which functional…
Carl Lipo, Mark MadsenJan 4, 1999
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Market force, ecology and evolution
Markets have internal dynamics leading to excess volatility and other phenomena that are difficult to explain using rational expectations models. This paper studies these using a nonequilibrium price…
J. Doyne FarmerDec 18, 1998
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Clustering and synchronization with positive Lyapunov exponents
Clustering and correlation effects are frequently observed in chaotic systems in situations where, because of the positivity of the Lyapunov exponents, no dimension reduction is to be expected. In…
R. Vilela MendesDec 18, 1998
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Modeling 1/f noise
The noise of signals or currents consisting from a sequence of pulses, elementary events or moving discrete objects (particles) is analyzed. A simple analytically solvable model is investigated in…
B. Kaulakys, T. MeskauskasDec 8, 1998
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Reproductive Tradeoffs In Uncertain Environments: Explaining The Evolution Of Cultural Elaboration
Dunnell's (1989) explanation for cultural elaboration proposed that elaboration could be a consequence of selection within uncertain environments. He developed the theory to the extent that it…
Mark Madsen, Carl Lipo, Michael CannonDec 3, 1998
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Power spectra of extinction in the fossil record
Recent Fourier analyses of fossil extinction data have indicated that the power spectrum of extinction during the Phanerozoic may take the form of 1/f noise, a result which, it has been suggested,…
M. E. J. Newman, Gunther J. EbleDec 2, 1998
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The Structure of Adaptive Competition in Minority Games
In this paper we present results and analyses of a class of games in which heterogeneous agents are rewarded for being in a minority group. Each agent possesses a number of fixed strategies each of…
Radu Manuca, Yi Li, Rick Riolo et al.Nov 26, 1998
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Time evolution of averages in dynamical systems driven by noise
This paper presents description of time evolution of averages of Markov process in wide range of noise intensity. Exact expression of time scale of average evolution has been obtained. It has been…
Andrey L. PankratovNov 26, 1998
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Extinction, diversity and survivorship of taxa in the fossil record
Using data drawn from large-scale databases, a number of interesting trends in the fossil record have been observed in recent years. These include the average decline in extinction rates throughout…
M. E. J. Newman, Paolo SibaniNov 24, 1998
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A simple model for the formation of a complex organism
A simple model for the formation of a complex organism is introduced. Individuals can communicate and specialize, leading to an increase in productivity. If there are limits to the capacity of…
Barbara DrosselNov 12, 1998
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