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arXiv 1301.4010cs.DSmath.CO
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在O(log OPT * log log OPT)箱中近似装箱

Approximating Bin Packing within O(log OPT * log log OPT) bins

Thomas Rothvoss

摘要:

对于装箱,输入由大小为s_1,.,s_n在[0,1]中,其必须被分配给最小数量的大小为1的仓。1982年的开创性Karmarkar-Karp算法产生了最多OPT + O(log^2 OPT)bin的解。我们提供了第一个改进,在现在的30年,并表明,可以找到一个解决方案的成本OPT + O(日志OPT * 日志日志OPT)在多项式时间。这是通过使用来自差异理论的熵方法将分数解舍入到Gilmore-Gomory LP松弛来实现的。通过Bansal和Lovett-Meka的算法,结果是建设性的。

英文摘要:

For bin packing, the input consists of n items with sizes s_1,...,s_n in [0,1] which have to be assigned to a minimum number of bins of size 1. The seminal Karmarkar-Karp algorithm from '82 produces a solution with at most OPT + O(log^2 OPT) bins. We provide the first improvement in now 3 decades and show that one can find a solution of cost OPT + O(log OPT * log log OPT) in polynomial time. This is achieved by rounding a fractional solution to the Gilmore-Gomory LP relaxation using the Entropy Method from discrepancy theory. The result is constructive via algorithms of Bansal and Lovett-Meka.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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