Download Algorithms - ESA 2014: 22th Annual European Symposium, by Andreas S. Schulz, Dorothea Wagner PDF

By Andreas S. Schulz, Dorothea Wagner

This publication constitutes the refereed complaints of the 22st Annual ecu Symposium on Algorithms, ESA 2014, held in Wrocław, Poland, in September 2014, as a part of ALGO 2014. The sixty nine revised complete papers offered have been conscientiously reviewed and chosen from 269 preliminary submissions: fifty seven out of 221 in tune A, layout and research, and 12 out of forty eight in tune B, Engineering and functions. The papers current unique examine within the parts of layout and mathematical research of algorithms; engineering, experimental research, and real-world purposes of algorithms and knowledge structures.

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Extra info for Algorithms - ESA 2014: 22th Annual European Symposium, Wroclaw, Poland, September 8-10, 2014. Proceedings

Example text

In this paper we take a step forward and study multi-job games, in which there is a set of agents A who control arbitrary sets of jobs. Specifically the set of jobs controlled by player α ∈ A is denoted by J(α) ⊂ J and its cost given a particular schedule is the sum of weighted completion times of its own jobs j∈J(α) wj Cj . As in single-job games, we concentrate on designing coordination mechanisms leading to small coordination ratios, when the social cost is the sum of weighted completion times of all jobs (or equivalently of all agents).

However the implied bounds on the price of anarchy are constant only for simple environments such as when machines are identical. Indeed, Azar et al. [2], and Fleischer and Svitkina [19] show that, even for a restricted uniform machines environment “almost” no deterministic machine policies can achieve a constant price of anarchy. The result was finally established by Abed and Huang [1], who proved that no symmetric coordination mechanism satisfying the so-called “independence of irrelevant alternatives” property, even if preemption is allowed, can achieve a constant price of anarchy for the makespan objective.

A. 618 of the optimal solution. The latter constitutes the first direct application of purely game-theoretic ideas to the analysis of a well studied local search heuristic. 1 Introduction Machine scheduling originates in the optimization of manufacturing systems and their formal mathematical treatment dates back to at least the pioneering work of Smith [38]. In general, scheduling problems can be described as follows. Consider a set J of n jobs that have to be processed on a set M of m parallel machines.

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