Titlebook: Approximation and Online Algorithms; 19th International W Jochen Koenemann,Britta Peis Conference proceedings 2021 Springer Nature Switzerl

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0302-9743 ok were carefully reviewed and selected from 31 submissions. The papers focus on the design and analysis of algorithms for online and computationally hard problems..978-3-030-92701-1978-3-030-92702-8Series ISSN 0302-9743 Series E-ISSN 1611-3349

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Die Entstehung der Herzhypertrophie, in the most general cases 8/3 is the best approximation ratio known attainable in polynomial time?[.]. Our algorithms are designed based on the most natural LP relaxation of .-EDS and maximal .-matchings (or its generalization).

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Server Cloud Scheduling,lly, whereas the cloud can serve as many as needed in parallel, but induces costs. We consider both makespan and cost minimization. The main results are an FPTAS with respect for the makespan objective for a fairly general case and strong hardness for the case with unit processing times and delays.

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,Precedence-Constrained Covering Problems with?Multiplicity Constraints,yield an .-approximation, where . is the maximum number of variables with nonzero coefficients in a covering constraint. This is nearly-optimal under standard complexity-theoretic assumptions and surprisingly matches the bound achieved for the problem without precedence constraints.