On-line scheduling of unit time jobs with rejection: Minimizing the total completion time

Leah Epstein; John Noga; Gerhard J. Woeginger

doi:10.1016/S0167-6377(02)00160-8

On-line scheduling of unit time jobs with rejection: Minimizing the total completion time

Leah Epstein, John Noga, Gerhard J. Woeginger

Research output: Contribution to journal › Article › peer-review

Abstract

We consider on-line scheduling of unit time jobs on a single machine with job-dependent penalties. The jobs arrive on-line (one by one) and can be either accepted and scheduled, or be rejected at the cost of a penalty. The objective is to minimize the total completion time of the accepted jobs plus the sum of the penalties of the rejected jobs. We give an on-line algorithm for this problem with competitive ratio 1/2(2 + 3) ≈ 1.86602. Moreover, we prove that there does not exist an on-line algorithm with competitive ratio better than 1.63784.

Original language	English
Pages (from-to)	415-420
Number of pages	6
Journal	Operations Research Letters
Volume	30
Issue number	6
DOIs	https://doi.org/10.1016/S0167-6377(02)00160-8
State	Published - Dec 2002
Externally published	Yes

Keywords

Competitive analysis
On-line algorithm
Scheduling
Worst-case bounds

ASJC Scopus subject areas

Software
Management Science and Operations Research
Industrial and Manufacturing Engineering
Applied Mathematics

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10.1016/S0167-6377(02)00160-8

Cite this

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title = "On-line scheduling of unit time jobs with rejection: Minimizing the total completion time",

abstract = "We consider on-line scheduling of unit time jobs on a single machine with job-dependent penalties. The jobs arrive on-line (one by one) and can be either accepted and scheduled, or be rejected at the cost of a penalty. The objective is to minimize the total completion time of the accepted jobs plus the sum of the penalties of the rejected jobs. We give an on-line algorithm for this problem with competitive ratio 1/2(2 + 3) ≈ 1.86602. Moreover, we prove that there does not exist an on-line algorithm with competitive ratio better than 1.63784.",

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N2 - We consider on-line scheduling of unit time jobs on a single machine with job-dependent penalties. The jobs arrive on-line (one by one) and can be either accepted and scheduled, or be rejected at the cost of a penalty. The objective is to minimize the total completion time of the accepted jobs plus the sum of the penalties of the rejected jobs. We give an on-line algorithm for this problem with competitive ratio 1/2(2 + 3) ≈ 1.86602. Moreover, we prove that there does not exist an on-line algorithm with competitive ratio better than 1.63784.

AB - We consider on-line scheduling of unit time jobs on a single machine with job-dependent penalties. The jobs arrive on-line (one by one) and can be either accepted and scheduled, or be rejected at the cost of a penalty. The objective is to minimize the total completion time of the accepted jobs plus the sum of the penalties of the rejected jobs. We give an on-line algorithm for this problem with competitive ratio 1/2(2 + 3) ≈ 1.86602. Moreover, we prove that there does not exist an on-line algorithm with competitive ratio better than 1.63784.

KW - Competitive analysis

KW - On-line algorithm

KW - Scheduling

KW - Worst-case bounds

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JO - Operations Research Letters

JF - Operations Research Letters

IS - 6

ER -

On-line scheduling of unit time jobs with rejection: Minimizing the total completion time

Abstract

Keywords

ASJC Scopus subject areas

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