611 search results - page 34 / 123 » Querying Tree-Structured Data Using Dimension Graphs |
WWW
2008
ACM
14 years 8 months ago
2008
ACM
In this paper, we formalize the problem of Basic Graph Pattern (BGP) optimization for SPARQL queries and main memory graph implementations of RDF data. We define and analyze the c...
PVLDB
2008
13 years 7 months ago
2008
In this paper we propose a novel document retrieval model in which text queries are augmented with multi-dimensional taxonomy restrictions. These restrictions may be relaxed at a ...
DMIN
2006
13 years 9 months ago
2006
Efficient algorithms to discover frequent patterns are crucial in data mining research. Several effective data structures, such as two-dimensional arrays, graphs, trees, and tries ...
SDM
2009
SIAM
14 years 4 months ago
2009
SIAM
Data stream analysis frequently relies on identifying correlations and posing conditional queries on the data after it has been seen. Correlated aggregates form an important examp...
SEMWEB
2004
Springer
14 years 1 months ago
2004
Springer
Faceted classification allows one to model applications with complex classification hierarchies using orthogonal dimensions. Recent work has examined the use of faceted classi...