Approximation algorithms for finding and partitioning unit-disk graphs into co--plexes
Balabhaskar Balasundaram, Shyam S. Chandramouli, Svyatoslav Trukhanov
August 2010Abstract
This article studies a degree-bounded generalization of independent sets called co--plexes. Constant factor approximation algorithms are developed for the maximum co--plex problem on unit-disk graphs. The related problem of minimum co--plex coloring that generalizes classical vertex coloring is also studied in the context of unit-disk graphs. We extend several classical approximation results for independent sets in UDGs to co--plexes, and settle a recent conjecture on the approximability of co--plex coloring in UDGs.
Publication
Optimization Letters