204 search results - page 41 / 41 » Containment of Conjunctive Queries with Negation: Algorithms... |
WWW
2008
ACM
14 years 6 months ago
2008
ACM
Contextual advertising supports much of the Web's ecosystem today. User experience and revenue (shared by the site publisher ad the ad network) depend on the relevance of the...
SIGIR
2009
ACM
13 years 12 months ago
2009
ACM
The selection of indexing terms for representing documents is a key decision that limits how effective subsequent retrieval can be. Often stemming algorithms are used to normaliz...
ICDE
2007
IEEE
13 years 11 months ago
2007
IEEE
Trust management is a form of access control that uses delegation to achieve scalability beyond a single organization or federation. However, delegation can be difficult to contr...
PAMI
2006
13 years 5 months ago
2006
We propose a new method for rapid 3D object indexing that combines feature-based methods with coarse alignment-based matching techniques. Our approach achieves a sublinear complexi...