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Combinatorial approximation of maximum $k$-vertex cover in bipartite graphs within ratio~0.7 (1502.07930v2)
Published 27 Feb 2015 in cs.DS
Abstract: We propose a \textit{purely combinatorial algorithm} for \mkvc{} in bipartite graphs, achieving approximation ratio~0.7. The only combinatorial algorithms currently known until now for this problem are the natural greedy algorithm, that achieves ratio 0.632, and an easy~$2/3$-approximation algorithm presented in \cite{DBLP:journals/corr/BonnetEPS14}.