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- W2029777782 abstract "We show that it is not possible to approximate the minimum Steiner tree problem within 1+ 1 162 unless RP=NP. The currently best known lower bound is 1+ 1 400 . The reduction is from Håstad's nonapproximability result for maximum satisfiability of linear equation modulo 2. The improvement on the nonapproximability ratio is mainly based on the fact that our reduction does not use variable gadgets. This idea was introduced by Papadimitriou and Vempala." @default.
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- W2029777782 date "2003-02-01" @default.
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- W2029777782 title "On the approximability of the Steiner tree problem" @default.
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- W2029777782 doi "https://doi.org/10.1016/s0304-3975(02)00414-0" @default.
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