A robust gene clustering algorithm based on clonal selection in multiobjective optimization framework. (15th December 2018)

• Record Type: Journal Article
• Authors: Zareizadeh, Zahra; Helfroush, Mohammad Sadegh; Rahideh, Akbar; Kazemi, Kamran
• Is Part Of: Expert systems with applications. Volume 113(2018)
• Page Start: 301
• Page End: 314
• Publication Date: 2018-12-15
• Subjects: Gene clustering -- Multi-objective optimization -- Clonal selection -- Microarray; Expert systems (Computer science) -- Periodicals; Systèmes experts (Informatique) -- Périodiques; Electronic journals; 006.33
• DOI: 10.1016/j.eswa.2018.06.047
• Languages: English
• ISSNs: 0957-4174

Abstract

Highlights: Integration of clustering validity indexes as two conflicting objective functions. Fast convergence because of a novel population updating mechanism. Possibility of varying the number of clusters in a predefined range. Fixed population members length in spite of variable cluster numbers. Abstract: Gene clustering is a prerequisite in the analysis of microarray data where sets of co-expressed genes are clustered. In this paper, a multi-objective clonal selection optimization algorithm (MCSOA) is developed based on the immune system behavior for gene clustering purposes in which the number of clusters can vary in a predefined range. To achieve a reliable clustering outcome on various gene expression (GE) datasets, the most effective clustering validity indexes are incorporated and represented in terms of two conflicting objective functions. For the sake of fast convergence to the optimal solutions, a new population updating mechanism is iteratively applied to select the less-dominate solutions of the previous iteration. The proposed clustering technique is implemented on various publicly available microarray datasets. Comparing the results with those of the widely used gene clustering techniques confirms the superiority and efficacy of the proposed technique.