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Issue No. 01 - January-February (2011 vol. 8)
ISSN: 1545-5963
pp: 234-245
Md Tamjidul Hoque , Griffith University, Nathan
Madhu Chetty , Monash University, Churchill
Andrew Lewis , Griffith University, Nathan
Abdul Sattar , Griffith University, Nathan
This paper presents the impact of twins and the measures for their removal from the population of genetic algorithm (GA) when applied to effective conformational searching. It is conclusively shown that a twin removal strategy for a GA provides considerably enhanced performance when investigating solutions to complex ab initio protein structure prediction (PSP) problems in low-resolution model. Without twin removal, GA crossover and mutation operations can become ineffectual as generations lose their ability to produce significant differences, which can lead to the solution stalling. The paper relaxes the definition of chromosomal twins in the removal strategy to not only encompass identical, but also highly correlated chromosomes within the GA population, with empirical results consistently exhibiting significant improvements solving PSP problems.
Genetic algorithms, twin removal, protein structure prediction, search algorithms, chromosome.

M. T. Hoque, M. Chetty, A. Sattar and A. Lewis, "Twin Removal in Genetic Algorithms for Protein Structure Prediction Using Low-Resolution Model," in IEEE/ACM Transactions on Computational Biology and Bioinformatics, vol. 8, no. , pp. 234-245, 2009.
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