A \(\boldsymbol{\phi }\) -Competitive Algorithm for Scheduling Packets with Deadlines
A \(\boldsymbol{\phi }\) -Competitive Algorithm for Scheduling Packets with Deadlines
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一种具有截止日期的数据包调度竞争算法
DOI:
10.1137/21m1469753
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发表时间:
2022
影响因子:
1.6
通讯作者:
Sgall, Jiří
中科院分区:
文献类型:
--
作者:
Veselý, Pavel;Chrobak, Marek;Jeż, Łukasz;Sgall, Jiří
In theonline packet scheduling problem with deadlines(, for short), the goal is to schedule transmissions of packets that arrive over time in a network switch and need to be sent across a link. Each packet has a deadline, representing its urgency, and a nonnegative weight, which represents its priority. Only one packet can be transmitted in any time slot, so if the system is overloaded, some packets will inevitably miss their deadlines and be dropped. In this scenario, the natural objective is to compute a transmission schedule that maximizes the total weight of packets that are successfully transmitted. The problem is inherently online, with the scheduling decisions made without the knowledge of future packet arrivals. The central problem concerningthat has been a subject of intensive study since 2001 is to determine the optimal competitive ratio of online algorithms, namely the worst-case ratio between the optimum total weight of a schedule (computed by an offline algorithm) and the weight of a schedule computed by a (deterministic) online algorithm. We solve this open problem by presenting a-competitive online algorithm for(whereis the golden ratio), matching the previously established lower bound.
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DOI:
--
发表时间:
2004
期刊:
J. Algorithms
影响因子:
--
作者:
An Zhu
通讯作者:
An Zhu
影响因子:
1.1
作者:
Marcin Bienkowski;M. Chrobak;C. Dürr;M. Hurand;Artur Jeż;Lukasz Jez;Grzegorz Stachowiak
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Grzegorz Stachowiak
DOI:
10.4230/lipics.isaac.2016.21
发表时间:
2016-06
期刊:
ArXiv
影响因子:
--
作者:
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Martin Böhm;M. Chrobak;Lukasz Jez;Fei Li;J. Sgall;P. Veselý
DOI:
10.1145/3471469.3471481
发表时间:
2021
期刊:
ACM SIGACT News
影响因子:
--
作者:
Alison P. Lenton;Letitia Slabu;Martin Bruder;C. Sedikides
通讯作者:
C. Sedikides
DOI:
--
发表时间:
2012
期刊:
SIAM journal on computing (Print)
影响因子:
--
作者:
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通讯作者:
Matthias Westermann