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Séminaire Algo - Christoph Dürr
Séminaire Algo - Christoph Dürr
30-janv.-2018 14:30
Il y a: 79 days





Christoph Dürr

Description :The triangle scheduling problem

Salle de séminaire (4B05R) - Bâtiment Copernic

Abstract: We introduce a novel scheduling problem, where jobs occupy a triangular shape on the time line. This problem is motivated by scheduling jobs with different criticality levels. A measure is introduced, namely the binary tree ratio. It is shown that the Greedy algorithm solves the problem to optimality when the binary tree ratio of the input instance is at most 2. We also show that the problem is unary NP-hard for instances with binary tree ratio strictly larger than 2 and provide a quasi-polynomial time approximation scheme. The approximation ratio of Greedy on general instances is shown to be between 1.5 and 1.05.








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