342 search results - page 30 / 69 » Conjunctive Queries over Trees |
WEA
2007
Springer
14 years 1 months ago
2007
Springer
Dynamic tree data structures maintain forests that change over time through edge insertions and deletions. Besides maintaining connectivity information in logarithmic time, they ca...
PVLDB
2010
13 years 6 months ago
2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensio...
SMI
2005
IEEE
14 years 1 months ago
2005
IEEE
For time-dependent scalar fields, one is often interested in topology changes of contours in time. In this paper, we focus on describing how contours split and merge over a certa...
AAAI
2007
13 years 10 months ago
2007
Expressive Description Logics (DLs) have been advocated as formalisms for modeling the domain of interest in various application areas. An important requirement is the ability to ...
SSDBM
2007
IEEE
14 years 2 months ago
2007
IEEE
Space-partitioning trees, like the disk-based trie, quadtree, kd-tree and their variants, are a family of access methods that index multi-dimensional objects. In the case of index...