A PTAS for Scheduling with Tree Assignment Restrictions
نویسنده
چکیده
Scheduling with assignment restrictions is an important special case of scheduling unrelated machines which has attracted much attention in the recent past. While a lower bound on approximability of 3/2 is known for its most general setting, subclasses of the problem admit polynomialtime approximation schemes. This note provides a PTAS for tree-like hierarchical structures, improving on a recent 4/3-approximation by Huo and Leung [HL10].
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عنوان ژورنال:
- CoRR
دوره abs/1009.4529 شماره
صفحات -
تاریخ انتشار 2010