%0 Journal Article
%T On Unique Independence Weighted Graphs
%A Farzad Didehvar
%A Ali D. Mehrabi
%A Fatemeh Raee B
%J Computer Science
%D 2009
%I arXiv
%X An independent set in a graph G is a set of vertices no two of which are joined by an edge. A vertex-weighted graph associates a weight with every vertex in the graph. A vertex-weighted graph G is called a unique independence vertex-weighted graph if it has a unique independent set with maximum sum of weights. Although, in this paper we observe that the problem of recognizing unique independence vertex-weighted graphs is NP-hard in general and therefore no efficient characterization can be expected in general; we give, however, some combinatorial characterizations of unique independence vertex-weighted graphs. This paper introduces a motivating application of this problem in the area of combinatorial auctions, as well.
%U http://arxiv.org/abs/0907.0088v1