Context-Free Tree Grammars are as Powerful as Context-Free Jungle Grammars

被引:0
|
作者
Drewes, Frank [1 ]
Engelfriett, Joost [2 ]
机构
[1] Umea Univ, Dept Comp Sci, S-90187 Umea, Sweden
[2] Leiden Univ, Leiden Inst Adv Comp Sci, NL-2300 RA Leiden, Netherlands
来源
ACTA CYBERNETICA | 2015年 / 22卷 / 02期
关键词
context-free tree grammar; jungle; delegation network;
D O I
10.14232/actacyb.22.2.2015.9
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Jungles generalize trees by sharing subtrees and allowing garbage. It is shown that IO context-free tree grammars generate the same jungle languages as context-free jungle grammars. Also, they define the same subsets of any algebra.
引用
收藏
页码:373 / 392
页数:20
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