Selection on X1

被引:2
|
作者
Kreitzberg, Patrick [1 ]
Lucke, Kyle [2 ]
Pennington, Jake [1 ]
Serang, Oliver [2 ]
机构
[1] Univ Montana, Dept Math, Missoula, MT 59812 USA
[2] Univ Montana, Dept Comp Sci, Missoula, MT 59812 USA
来源
基金
美国国家科学基金会;
关键词
Selection; Cartesian product; Tree; Sorting; CONVOLUTION;
D O I
10.7717/peerj-cs.483
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Selection on the Cartesian product is a classic problem in computer science. Recently, an optimal algorithm for selection on A+B, based on soft heaps, was introduced. By combining this approach with layer-ordered heaps (LOHs), an algorithm using a balanced binary tree of A+B selections was proposed to perform selection on X-1+X-2+...+X-m in o(n.m+k.m), where X-i have length n. Here, that o(n.m+k.m) algorithm is combined with a novel, optimal LOH-based algorithm for selection on A+B (without a soft heap). Performance of algorithms for selection on X-1+X-2+...+X-m are compared empirically, demonstrating the benefit of the algorithm proposed here.
引用
收藏
页数:11
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