Multifactorial Evolutionary Algorithm For Clustered Minimum Routing Cost Problem
This addresses a complex optimization problem in network design, but it is incremental as it adapts an existing algorithm to a specific application.
The paper tackled the NP-hard Minimum Routing Cost Clustered Tree Problem by applying a Multifactorial Evolutionary Algorithm with a two-level crossover and mutation approach and a new cost calculation method, achieving effective results on large datasets.
Minimum Routing Cost Clustered Tree Problem (CluMRCT) is applied in various fields in both theory and application. Because the CluMRCT is NP-Hard, the approximate approaches are suitable to find the solution for this problem. Recently, Multifactorial Evolutionary Algorithm (MFEA) has emerged as one of the most efficient approximation algorithms to deal with many different kinds of problems. Therefore, this paper studies to apply MFEA for solving CluMRCT problems. In the proposed MFEA, we focus on crossover and mutation operators which create a valid solution of CluMRCT problem in two levels: first level constructs spanning trees for graphs in clusters while the second level builds a spanning tree for connecting among clusters. To reduce the consuming resources, we will also introduce a new method of calculating the cost of CluMRCT solution. The proposed algorithm is experimented on numerous types of datasets. The experimental results demonstrate the effectiveness of the proposed algorithm, partially on large instances