Heuristics for the central tree problem
: Bang-Jensen Jorgen, Nikulin Yuri
Publisher: SPRINGER
: 2010
: Journal of Heuristics
: JOURNAL OF HEURISTICS
: J HEURISTICS
: 5
: 16
: 5
: 633
: 651
: 19
: 1381-1231
DOI: https://doi.org/10.1007/s10732-009-9111-9
This paper addresses the central spanning tree problem (CTP). The problem consists in finding a spanning tree that minimizes the so-called robust deviation, i.e. deviation from a maximally distant tree. The distance between two trees is measured by means of the symmetric difference of their edge sets. The central tree problem is known to be NP-hard. We attack the problem with a hybrid heuristic consisting of: (1) a greedy construction heuristic to get a good initial solution and (2) fast local search improvement. We illustrate computationally efficiency of the proposed approach.