Two‐machine flow shop no‐wait scheduling with a nonavailability interval

Mikhail A. Kubzin and Vitaly A. Strusevich

Naval Research Logistics (NRL), 2004, vol. 51, issue 4, 613-631

Abstract: We study a two‐machine flow shop scheduling problem with no‐wait in process, in which one of the machines is not available during a specified time interval. We consider three scenarios of handing the operation affected by the nonavailability interval. Its processing may (i) start from scratch after the interval, or (ii) be resumed from the point of interruption, or (iii) be partially restarted after the interval. The objective is to minimize the makespan. We present an approximation algorithm that for all these scenarios delivers a worst‐case ratio of 3/2. For the second scenario, we offer a 4/3‐approximation algorithm. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004

Date: 2004
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