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CIXL2: A Crossover Operator for Evolutionary Algorithms Based on Population Features

D. Ortiz-Boyer, C. Hervás-Martínez, N. García-Pedrajas
2005 The Journal of Artificial Intelligence Research  
In this paper we propose a crossover operator for evolutionary algorithms with real values that is based on the statistical theory of population distributions.  ...  The operator is based on the theoretical distribution of the values of the genes of the best individuals in the population.  ...  Moya-Sánchez for her helping in the final version of this paper.  ... 
doi:10.1613/jair.1660 fatcat:nrsidi5h7janbmpuqb5qavyghm

Analyzing the statistical features of CIXL2 crossover offspring

C. Herv�s-Mart�nez, D. Ortiz-Boyer
2004 Soft Computing - A Fusion of Foundations, Methodologies and Applications  
This crossover is based on the learning of the statistical features of localization and dispersion of the best individuals of the population.  ...  We cannot deny the effort that the scientific community is devoting to the explanation of the features of the crossover operator of real-coded genetic algorithms and its effect over the evolutive process  ...  The interval based crossover operator using L 2 norm, CIXL2, creates an offspring b s , from an individual of the population, b f ¼ ðb f 1 ; b f 2 ; . . . ; b f p Þ, and the three individuals, CILL, CIUL  ... 
doi:10.1007/s00500-004-0379-2 fatcat:cf5ztqvhorbdrkcqbba5ei7uzy

Node level crossover applied to neural network evolution [chapter]

E. Sanz-Tapia, N. García-Pedrajas, D. Ortiz-Boyer, C. Hervás-Martínez
2003 Lecture Notes in Computer Science  
CIXL2 is a new crossover operator, based on obtaining the statistical features of the best individuals of the population. These features are used as virtual parents for the crossover operator.  ...  All the nodes of the best networks are clustered, by means of a k-means algorithm, and a redefinition of the operators is carried out using the obtained clusters.  ...  Moya-Sánchez for her helping in the final version of this paper.  ... 
doi:10.1007/3-540-44868-3_66 fatcat:t3se6t7zlvhbzik5rofhxn2k6q

Robust confidence intervals applied to crossover operator for real-coded genetic algorithms

Domingo Ortiz-Boyer, César Hervás-Martínez, Nicolás García-Pedrajas
2007 Soft Computing - A Fusion of Foundations, Methodologies and Applications  
In this work we propose a new approach to crossover operators for real-coded genetic algorithms based on robust confidence intervals.  ...  The performance of the crossovers based on robust intervals is evaluated using a well characterised set of optimisation problems.  ...  Moya-Sánchez for her help in the final version of this paper.  ... 
doi:10.1007/s00500-007-0237-0 fatcat:rlyz66tdjzegnf5dkl4ffg6dem

Improving crossover operator for real-coded genetic algorithms using virtual parents

Domingo Ortiz-Boyer, César Hervás-Martínez, Nicolás García-Pedrajas
2007 Journal of Heuristics  
The crossover operator is the most innovative and relevant operator in realcoded genetic algorithms.  ...  In this work we propose a new strategy to improve the performance of this operator by the creation of virtual parents obtained from the population parameters of localisation and dispersion of the best  ...  The same underlying theoretical principles have previously been used in the definition of two crossover operators based on confidence intervals: CIXL2 ) and CIXL1 .  ... 
doi:10.1007/s10732-007-9018-2 fatcat:7bstvkl5rzdjhfar3twxmnf6se

JCLEC: a Java framework for evolutionary computation

Sebastián Ventura, Cristóbal Romero, Amelia Zafra, José A. Delgado, César Hervás
2007 Soft Computing - A Fusion of Foundations, Methodologies and Applications  
In this paper we describe JCLEC, a Java software system for the development of evolutionary computation applications.  ...  The use of JCLEC system is illustrated though the analysis of one case study: the resolution of the 0/1 knapsack problem by means of evolutionary algorithms.  ...  , crossover based on occurrences and aptitude, diagonal crossover, mass center crossover, seed crossover, UNDX-n crossover) and crossover based on confidence intervals (CIXL1 and CIXL2) (Hervás and Ortiz  ... 
doi:10.1007/s00500-007-0172-0 fatcat:mps6eseecjdzhfb45rwouyb6wa

A unification of the prevalent views on exploitation, exploration, intensification and diversification

Francois Fagan, Jan H. Van Vuuren
2013 International Journal of Metaheuristics (IJMHeur)  
The consistency and meaningfulness of these views are substantiated by their deducibility from the proposed novel definitions of exploitation and exploration, based on the hypothetical construct of a probable  ...  Six prevalent views on exploitation and exploration are identified in the literature, each expressing a different aspect of these notions.  ...  Acknowledgements The anonymous reviewers made many valuable comments that significantly improved the quality of this paper, for which we thank them sincerely.  ... 
doi:10.1504/ijmheur.2013.056407 fatcat:vjiilb22yvci3avo2xjjuy2iuq