A compact static double-array keeping character codes

被引：15
|
作者：
Yata, Susumu [1 ]
Oono, Masaki [1 ]
Morita, Kazuhiro [1 ]
Fuketa, Masao [1 ]
Sumitomo, Toru [1 ]
Aoe, Jun-ichi [1 ]
机构：
[1] Univ Tokushima, Fac Engn, Dept Informat Sci & Intelligent Syst, Tokushima 7708506, Japan
来源：
INFORMATION PROCESSING & MANAGEMENT | 2007年 / 43卷 / 01期
关键词：
double-array; dictionary; compaction; TRIE STRUCTURES; ALGORITHM; SEARCH;
D O I：
10.1016/j.ipm.2006.04.004
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A trie represented by a double-array enables us to search a key fast with a small space. However, the double-array uses extra space to be updated dynamically. This paper presents a compact structure for a static double-array. The new structure keeps character codes instead of indices in order to compress elements of the double-array. In addition, the new structure unifies common suffixes and consists of less elements than the old structure. Experimental results for English keys show that the new structure reduces space usage of the double-array up to 40%. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：237 / 247
页数：11
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