Experimental Variations of a Theoretically Good Retrieval Data Structure
Experimental Variations of a Theoretically Good Retrieval Data Structure
复制标题
理论上良好的检索数据结构的实验变体
DOI:
10.1007/978-3-642-04128-0_66
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Michael Rink
中科院分区:
文献类型:
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作者:
Martin Aumüller;Martin Dietzfelbinger;Michael Rink
A retrieval data structure implements a mapping from a setSofnkeys to rangeR= {0,1}r, e.g. given by a list of key-value pairs (x,v) ∈S×R, but an element outsideSmay be mapped to any value. Asymptotically, minimal perfect hashing allows to build such a data structure that needsnlog2e+nr+o(n) bits of memory and has constant evaluation time. Recently, data structures based on other approaches have been proposed that have linear construction time, constant evaluation time and space consumptionO(nr) bits or even (1 +ε)nrbits for arbitraryε> 0. This paper explores the practicability of one such theoretically very good proposal, bridging a gap between theory and real data structures.
DOI:
10.1017/s0963548397003040
发表时间:
1997
期刊:
Combinatorics, Probability and Computing
影响因子:
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作者:
Neil J. Calkin
通讯作者:
Neil J. Calkin
DOI:
10.1007/978-3-540-70575-8_32
发表时间:
2008
期刊:
影响因子:
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作者:
Martin Dietzfelbinger;Rasmus Pagh
通讯作者:
Rasmus Pagh