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A Probabilistic Approach to Problems Parameterized Above or Below Tight Bounds
Published 7 Jun 2009 in cs.DS and cs.DM | (0906.1356v3)
Abstract: We introduce a new approach for establishing fixed-parameter tractability of problems parameterized above tight lower bounds. To illustrate the approach we consider three problems of this type of unknown complexity that were introduced by Mahajan, Raman and Sikdar (J. Comput. Syst. Sci. 75, 2009). We show that a generalization of one of the problems and non-trivial special cases of the other two are fixed-parameter tractable.
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