Abstract
Cunningham and Marsh (1978) announced an algorithm to obtain an integral optimum dual solution of weighted matching when every edge weight is integral. Obtaining such a solution is of interest because it reveals min–max properties. This paper provides a faster algorithm to achieve the same purpose. Our method can be extended to b-matching. Although the existence of an integral optimum dual solution of weighted b-matching was shown by Pulleyblank (1980), this is the first algorithmic way to find such a solution.
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