17 search results - page 1 / 4 » Counting Twig Matches in a Tree |
ICDE
2001
IEEE
14 years 6 months ago
2001
IEEE
We describe efficient algorithms for accurately estimating the number of matches of a small node-labeled tree, i.e., a twig, in a large node-labeled tree, using a summary data str...
DASFAA
2004
IEEE
13 years 8 months ago
2004
IEEE
Abstract. We consider the problem of accurately estimating the number of approximate XML answers for a given query, and propose an efficient method that (1) accurately computes sel...
DASFAA
2007
IEEE
13 years 11 months ago
2007
IEEE
Twig pattern matching problem has been widely studied in recent years. Give an XML tree T . A twig-pattern matching query, Q, represented as a query tree, is to find all the occur...
ICDE
2008
IEEE
14 years 6 months ago
2008
IEEE
Abstract-- Current twig join algorithms incur high memory costs on queries that involve child-axis nodes. In this paper we provide an analytical explanation for this phenomenon. In...
ADC
2008
Springer
13 years 6 months ago
2008
Springer
In order to find all occurrences of a tree/twig pattern in an XML database, a number of holistic twig join algorithms have been proposed. However, most of these algorithms focus o...