Some observations on one-way alternating pushdown automata with sublinear space

被引：0
|
作者：
Xu, JL
Yoshinaga, T
Inoue, K [1 ]
机构：
[1] Ocean Univ China, Dept Comp Sci, Qingdao 266071, Peoples R China
[2] Tokuyama Coll Technol, Dept Comp Sci & Elect Engn, Tokuyama, Yamaguchi 7458585, Japan
[3] Yamaguchi Univ, Fac Engn, Dept Comp Sci & Syst Engn, Ube, Yamaguchi 7558611, Japan
来源：
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES | 2004年 / E87A卷 / 05期
关键词：
alternating pushdown automata; sublogarithmic complexity; sublinear complexity; space hierarchy;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper investigates some fundamental properties of one-way alternating pushdown automata with sublinear space. We first show that one-way nondeterministic pushdown automata are incomparale with one-way alternating pushdown automata with only universal states, for spaces between log log n and log n, and also for spaces between log n and n/log n. We then show that there exists an infinite space hierarchy among one-way alternating pushdown automata with only universal states which have sublinear space.
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页码：1012 / 1019
页数：8
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