Approximate schemas, source-consistency and query answering

被引：0
|
作者：
Michel de Rougemont
Adrien Vieilleribière
机构：
[1] University Paris-II,CNRS
[2] University Paris-Sud,LRI
来源：
Journal of Intelligent Information Systems | 2008年 / 31卷
关键词：
Approximate schemas; Source-consistency; Query answering; Distances; Complexity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We use the Edit distance with Moves on words and trees and say that two regular (tree) languages are ε-close if every word (tree) of one language is ε-close to the other. A transducer model is introduced to compare tree languages (schemas) with different alphabets and attributes. Using the statistical embedding of Fischer et al. (Proceedings of 21st IEEE Symposium on Logic in Computer Science, pp. 421–430, 2006), we show that Source-Consistency and Approximate Query Answering are testable on words and trees, i.e. can be approximately decided within ε by only looking at a constant fraction of the input.
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页码：127 / 146
页数：19
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