342 search results - page 14 / 69 » Conjunctive Queries over Trees |
PODS
2000
ACM
14 years 3 days ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
DEXAW
2004
IEEE
13 years 11 months ago
2004
IEEE
Database-like query processing over a network of sensors has become an attractive paradigm for building sensor applications. A sensor query is characterized by data streams among ...
WEBDB
2004
Springer
14 years 1 months ago
2004
Springer
XML and semi-structured data is usually modeled using graph structures. Structural summaries, which have been proposed to speedup XML query processing have graph forms as well. Th...
NAACL
2010
13 years 5 months ago
2010
Recent work has proposed the use of an extracted tree grammar as the basis for treebank analysis and search queries, in which queries are stated over the elementary trees, which a...
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper, we study the problem of keyword proximity search over XML documents and leverage the efficiency and effectiveness. We take the disjunctive semantics among input key...