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- W2116750568 abstract "We study approximation algorithms and hardness of approximation for several versions of the problem of packing Steiner trees. For packing edge-disjoint Steiner trees of undirected graphs, we show APX-hardness for 4 terminals. For packing Steiner-node-disjoint Steiner trees of undirected graphs, we show a logarithmic hardness result, and give an approximation guarantee of (O(sqrt{n}log n)), where n denotes the number of nodes. For the directed setting (packing edge-disjoint Steiner trees of directed graphs), we show a hardness result of (Omega(m^{frac{1}{3}-epsilon})) and give an approximation guarantee of (O(m^{frac{1}{2}+epsilon})), where m denotes the number of edges. The paper has several other results." @default.
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- W2116750568 date "2004-01-01" @default.
- W2116750568 modified "2023-09-27" @default.
- W2116750568 title "Hardness and Approximation Results for Packing Steiner Trees" @default.
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- W2116750568 doi "https://doi.org/10.1007/978-3-540-30140-0_18" @default.
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