Ontology type: schema:Chapter
2000-07-21
AUTHORS ABSTRACTThis paper presents polynomial-time approximation algorithms for the problem of computing a maximum independent set in a given map graph G with or without weights on its vertices. If G is given together with a map, then a ratio of 1+δ can be achieved in O(n2) time for any given constant δ > 0, no matter whether each vertex of G is given a weight or not. In case G is given without a map, a ratio of 4 can be achieved in O(n7) time if no vertex is given a weight, while a ratio of O(log n) can be achieved in O(n7 log n) time otherwise. Behind the design of our algorithms are several fundamental results for map graphs; these results can be used to design good approximation algorithms for coloring and vertex cover in map graphs, and may find applications to other problems on map graphs as well. More... »
PAGES105-114
Computing and Combinatorics
ISBN
978-3-540-67787-1
978-3-540-44968-3
http://scigraph.springernature.com/pub.10.1007/3-540-44968-x_11
DOIhttp://dx.doi.org/10.1007/3-540-44968-x_11
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