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- W3099831561 abstract "Abstract Papadimitriou and Yannakakis (Proceedings of the 41st annual IEEE symposium on the Foundations of Computer Science (FOCS), pp 86–92, 2000) show that the polynomial-time solvability of a certain auxiliary problem determines the class of multiobjective optimization problems that admit a polynomial-time computable $$(1+varepsilon , dots , 1+varepsilon )$$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mi>ε</mml:mi> <mml:mo>,</mml:mo> <mml:mo>⋯</mml:mo> <mml:mo>,</mml:mo> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> <mml:mi>ε</mml:mi> <mml:mo>)</mml:mo> </mml:mrow> </mml:math> -approximate Pareto set (also called an $$varepsilon $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>ε</mml:mi> </mml:math> - Pareto set ). Similarly, in this article, we characterize the class of multiobjective optimization problems having a polynomial-time computable approximate $$varepsilon $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>ε</mml:mi> </mml:math> -Pareto set that is exact in one objective by the efficient solvability of an appropriate auxiliary problem. This class includes important problems such as multiobjective shortest path and spanning tree, and the approximation guarantee we provide is, in general, best possible. Furthermore, for biobjective optimization problems from this class, we provide an algorithm that computes a one-exact $$varepsilon $$ <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML> <mml:mi>ε</mml:mi> </mml:math> -Pareto set of cardinality at most twice the cardinality of a smallest such set and show that this factor of 2 is best possible. For three or more objective functions, however, we prove that no constant-factor approximation on the cardinality of the set can be obtained efficiently." @default.
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- W3099831561 date "2020-11-18" @default.
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- W3099831561 title "One-exact approximate Pareto sets" @default.
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- W3099831561 doi "https://doi.org/10.1007/s10898-020-00951-7" @default.
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