A note on the precedence-constrained class sequencing problem
نویسندگان
چکیده
We give a short proof of a result of Tovey [Non-approximability of precedence-constrained sequencing to minimize setups, DiscreteAppl. Math. 134:351–360, 2004] on the inapproximability of a scheduling problem known as precedence-constrained class sequencing. In addition, we present an approximation algorithm with performance guarantee (c + 1)/2, where c is the number of colors. This improves upon Tovey’s c-approximation. © 2006 Elsevier B.V. All rights reserved.
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ورودعنوان ژورنال:
- Discrete Applied Mathematics
دوره 155 شماره
صفحات -
تاریخ انتشار 2007