Variable Neighborhood Search for Minimum Linear Arrangement Problem

Nenad Mladenović, Dragan Urošević, Dionisio Pérez-Brit

The minimum linear arrangement problem is widely used and studied in many practical and theoretical applications. It consists of finding an embedding of the nodes of a graph on the line such that the sum of the resulting edge lengths is minimized. This problem is one among the classical NP-hard optimization problems and therefore, there has been extensive research on exact and approximative algorithms. In this paper we present an implementation of a variable neighbor- hood search (VNS) for solving minimum linear arrangement problem. We use Skewed general VNS scheme witch appeared to be successful in solving some recent optimization problems on graphs. Based on computational experiments, we argue that our approach is comparable with the state-of-the-art heuristic.