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Titlebook: Approximation Algorithms for Combinatorial Optimization; Third International Klaus Jansen,Samir Khuller Conference proceedings 2000 Spring

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21#
發(fā)表于 2025-3-25 04:45:36 | 只看該作者
22#
發(fā)表于 2025-3-25 11:30:14 | 只看該作者
23#
發(fā)表于 2025-3-25 12:51:12 | 只看該作者
Die Ergebnisse der Empirischen Untersuchung,the multiprocessor case while maintaining constant competitiveness. The multiprocessor algorithm does not use migration, i.e., preempted jobs continue their execution on the same processor on which they were originally processed.
24#
發(fā)表于 2025-3-25 16:15:08 | 只看該作者
Erfolgsfaktoren in Filialsystemenly it was shown VLSP-[0, .) is NP-hard and that VLSP-{1, 2} can be solved efficiently. For a more general case of VLSP-{1, .} an 2 - 1/. approximation was shown. This paper shows that for . ≥ 3 VLSP-{1, .} is MAX-SNP hard, and that we can approximate it with ratio 2 - 4/(. + 3).
25#
發(fā)表于 2025-3-25 21:08:42 | 只看該作者
https://doi.org/10.1007/978-3-8349-9978-8m an optimal solution is substantially closer than what one would obtain by just taking a random solution. In fact, we have been able to show similar results for most of Karp’s 21 original .-complete problems. (At the moment, our results are not tight only for UNDIRECTED HAMILTONIAN CYCLE and FEEDBACK EDGE SET.)
26#
發(fā)表于 2025-3-26 02:04:03 | 只看該作者
27#
發(fā)表于 2025-3-26 04:53:36 | 只看該作者
https://doi.org/10.1007/978-3-8349-9978-8) where ρST is the performance ratio of any approximation algorithm for minimum Steiner tree. When all sources have the same demand value, the ratio improves to (nST +1) and in particular, to 2 when all nodes in the graph are sources.
28#
發(fā)表于 2025-3-26 10:10:34 | 只看該作者
29#
發(fā)表于 2025-3-26 16:23:06 | 只看該作者
30#
發(fā)表于 2025-3-26 19:22:36 | 只看該作者
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