Abstract：
:The shortest common supersequence (SCS) problem is a classical NP-hard problem, which is normally solved by heuristic algorithms. One important heuristic that is inspired by the process of chemical reactions in nature is the chemical reaction optimization (CRO) and its algorithm known as CRO_SCS. In this paper we propose a novel CRO algorithm, dubbed IMCRO, to solve the SCS problem efficiently. Two new operators are introduced in two of the four reactions of the CRO: a new circular shift operator is added to the decomposition reaction, and a new two-step crossover operator is included in the inter-molecular ineffective collision reaction. Experimental results show that IMCRO achieves better performance on random and real sequences than well-known heuristic algorithms such as the ant colony optimization, deposition and reduction, enhanced beam search, and CRO_SCS. Additionally, it outperforms its baseline CRO_SCS for DNA instances, averaging a SCS length reduction of 1.02, with a maximum length reduction of up to 2.1.
journal_name
Comput Biol Chemjournal_title
Computational biology and chemistryauthors
Luo F,Chen C,Fuentes Jdoi
10.1016/j.compbiolchem.2020.107327subject
Has Abstractpub_date
2020-10-01 00:00:00pages
107327eissn
1476-9271issn
1476-928Xpii
S1476-9271(19)31146-6journal_volume
88pub_type
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