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» A Lower Bound on the Competitive Ratio of Truthful Auctions
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77
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AOR
2006
99views more  AOR 2006»
14 years 9 months ago
On-line bin Packing with Two Item Sizes
The problem of on-line bin packing restricted to instances with only two item sizes (known in advance) has a well-known lower bound of 4/3 for its asymptotic competitive ratio. We...
Gregory Gutin, Tommy R. Jensen, Anders Yeo
ICALP
2004
Springer
15 years 2 months ago
Online Scheduling of Equal-Length Jobs: Randomization and Restarts Help
We consider the following scheduling problem. The input is a set of jobs with equal processing times, where each job is specified by its release time and deadline. The goal is to ...
Marek Chrobak, Wojciech Jawor, Jiri Sgall, Tom&aac...
IPL
2006
97views more  IPL 2006»
14 years 9 months ago
A tight lower bound for job scheduling with cancellation
The Job Scheduling with Cancellation problem is a variation of classical scheduling problems in which jobs can be cancelled while waiting for execution. In this paper we prove a t...
Feifeng Zheng, Francis Y. L. Chin, Stanley P. Y. F...
WAOA
2007
Springer
126views Algorithms» more  WAOA 2007»
15 years 3 months ago
Better Bounds for Incremental Medians
In the incremental version of the well-known k-median problem the objective is to compute an incremental sequence of facility sets F1 ⊆ F2 ⊆ .... ⊆ Fn, where each Fk contain...
Marek Chrobak, Mathilde Hurand
90
Voted
ESA
2009
Springer
109views Algorithms» more  ESA 2009»
15 years 2 months ago
Preemptive Online Scheduling with Reordering
We consider online preemptive scheduling of jobs, arriving one by one, on m identical parallel machines. A buffer of a fixed size K > 0, which assists in partial reordering of...
György Dósa, Leah Epstein