Narrow search
Showing 1 - 10 of 671
Cover Image
Technological innovation and complexity theory
Frenken, Koen - In: Economics of Innovation and New Technology 15 (2006) 2, pp. 137-155
Complexity theory has become influential in recent models in social science. In the context of innovations and new … process has received less attention. This paper discusses three families of complexity models of technological innovation …-parameterisation'. The paper ends with discussing the methodological challenges and critiques regarding the application of complexity theory …
Persistent link: https://www.econbiz.de/10005484537
Cover Image
In and out forests on combinatorial landscapes
Kammerdiner, A.R.; Pasiliao, E.L. - In: European Journal of Operational Research 236 (2014) 1, pp. 78-84
Fitness landscape theory is a mathematical framework for numerical analysis of search algorithms on combinatorial optimization problems. We study a representation of fitness landscape as a weighted directed graph. We consider out forest and in forest structures in this graph and establish...
Persistent link: https://www.econbiz.de/10010753508
Cover Image
Evolvable hardware: genetic search in a physical realm
Raichman, Nadav; Segev, Ronen; Ben-Jacob, Eshel - In: Physica A: Statistical Mechanics and its Applications 326 (2003) 1, pp. 265-285
The application of evolution-inspired strategies to hardware design and circuit self-configuration leads to the concept of evolvable hardware (EHW). EHW refers to self-configuration of electronic hardware by evolutionary/genetic algorithms (EA and GA, respectively). Unconventional circuits, for...
Persistent link: https://www.econbiz.de/10010872306
Cover Image
Modeling mutant distribution in a stressed Escherichia coli bacteria population using experimental data
Bazzani, Armando; Fani, Renato; Freguglia, Paolo - In: Physica A: Statistical Mechanics and its Applications 393 (2014) C, pp. 320-326
In this paper we propose a statistical physics approach to experimental results on bacterial mutations (Escherichia coli). We get scaling laws that describe some generic traits and suggest some features of the underlying dynamical structure for the considered evolution process. Our main...
Persistent link: https://www.econbiz.de/10010872560
Cover Image
The Organisation of Innovative Activity in Complex Fitness Landscapes
Frenken, Koen; Valente, Marco - Society for Computational Economics - SCE - 2002
Persistent link: https://www.econbiz.de/10005537653
Cover Image
Self similarity in a model of genetic microevolution
Strier, Damián E.; Zanette, Damián H. - In: Physica A: Statistical Mechanics and its Applications 257 (1998) 1, pp. 530-535
A mathematical model of genetic microevolution is presented. The model stands for a population of genotypes evolving in the genotypic space. Its dynamics is governed by a master evolution equation which takes into account both the presence of a fluctuating fitness landscape and genotypic...
Persistent link: https://www.econbiz.de/10011060980
Cover Image
Statistical Dynamics of the Royal Road Genetic Algorithm
Nimwegen, Erik van; Crutchfield, James P.; Mitchell, Melanie - Santa Fe Institute - 1997
Persistent link: https://www.econbiz.de/10005790669
Cover Image
Barrier Trees of Degenerate Landscapes
Flamm, Christoph; Hofacker, Ivo L.; Stadler, Peter F.; … - Santa Fe Institute - 2001
The heights of energy barriers separating two (macro-)states are useful for estimating transition frequencies. In non-degenerate landscapes the decomposition of a landscape into basins surrounding local minima connected by saddle points is straightforward and yields a useful definition of...
Persistent link: https://www.econbiz.de/10005790684
Cover Image
Genotypes with Phenotypes: Adventures in an RNA Toy World
Schuster, Peter - Santa Fe Institute - 1997
Evolution has created the complexity of the animate world and deciphering the language of evolution is the key toward …
Persistent link: https://www.econbiz.de/10005790826
Cover Image
Overly ambitious: contributions and current status of Q methodology
Kampen, Jarl; Tamás, Peter - In: Quality & Quantity: International Journal of Methodology 48 (2014) 6, pp. 3109-3126
This essay offers a small description of recent contributions and status of Q methodology by means of a review of suggested best practices, a systematic review of practice, and a methodological audit. Both theoretical and empirical study suggest that Q methodology neither delivers its promised...
Persistent link: https://www.econbiz.de/10010993066