Total completion time minimization in online hierarchical scheduling of unit-size jobs
Total completion time minimization in online hierarchical scheduling of unit-size jobs
复制标题
单位规模作业在线分层调度中总完成时间最小化
DOI:
10.1007/s10878-016-0011-2
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发表时间:
2016-03
影响因子:
1
通讯作者:
Zhang Qinghui
中科院分区:
文献类型:
--
作者:
Hu Jueliang;Jiang Yiwei;Zhou Ping;Zhang An;Zhang Qinghui
This paper investigates an online hierarchical scheduling problem onmparallel identical machines. Our goal is to minimize the total completion time of all jobs. Each job has a unit processing time and a hierarchy. The job with a lower hierarchy can only be processed on the first machine and the job with a higher hierarchy can be processed on any one ofmmachines. We first show that the lower bound of this problem is at least, where. We then present a greedy algorithm with tight competitive ratio of. The competitive ratio is obtained in a way of analyzing the structure of the instance in the worst case, which is different from the most common method of competitive analysis. In particular, when, we propose an optimal online algorithm with competitive ratio of, which complements the previous result which provided an asymptotically optimal algorithm with competitive ratio of 1.1573 for the case where the number of jobsnis infinite, i.e.,.
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影响因子:
1.1
作者:
Jiang, Yiwei;Zhang, An;Tan, Zhiyi
通讯作者:
Tan, Zhiyi
影响因子:
1
作者:
Shlomo Karhi;D. Shabtay
通讯作者:
Shlomo Karhi;D. Shabtay
DOI:
10.1016/j.ic.2007.11.004
发表时间:
2008-05
期刊:
Inf. Comput.
影响因子:
--
作者:
G. Dósa;L. Epstein
通讯作者:
G. Dósa;L. Epstein
DOI:
10.1016/s0166-218x(03)00341-x
发表时间:
2004-03
期刊:
Discret. Appl. Math.
影响因子:
--
作者:
P. Crescenzi;G. Gambosi;P. Penna
通讯作者:
P. Crescenzi;G. Gambosi;P. Penna
影响因子:
1
作者:
Yiwei Jiang
通讯作者:
Yiwei Jiang