66 search results - page 7 / 14 » Conjunctive Query Containment over Trees |
SEMWEB
2009
Springer
14 years 2 months ago
2009
Springer
An important application of semantic web technology is recognizing human-defined concepts in text. Query transformation is a strategy often used in search engines to derive querie...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
Data exchange is the problem of transforming data structured under a schema (called source) into data structured under a different schema (called target). The emphasis of data exc...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
A large fraction of an XML document typically consists of text data. The XPath query language allows text search via the equal, contains, and starts-with predicates. Such predicate...
SSDBM
2011
IEEE
12 years 11 months ago
2011
IEEE
Large-scale N-body simulations play an important role in advancing our understanding of the formation and evolution of large structures in the universe. These computations require ...
PODS
2004
ACM
14 years 7 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...