617 search results - page 76 / 124 » Semantic queries in databases: problems and challenges |
ICIP
2001
IEEE
14 years 10 months ago
2001
IEEE
Images and videos can be indexed by multiple features at different levels, such as color, texture, motion, and text annotation. Organizing this information into a system so that u...
SIGMOD
2012
ACM
11 years 11 months ago
2012
ACM
Query substitution is an important problem in information retrieval. Much work focuses on how to find substitutes for any given query. In this paper, we study how to efficiently ...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Applications that monitor functions over rapidly and unpredictably changing data, express their needs as continuous queries. Our focus is on a rich class of queries, expressed as p...
SIGMOD
2010
ACM
14 years 1 months ago
2010
ACM
Time-oriented progress estimation for parallel queries is a challenging problem that has received only limited attention. In this paper, we present ParaTimer, a new type of timere...
SIGMOD
2010
ACM
13 years 9 months ago
2010
ACM
Trajectory search has long been an attractive and challenging topic which blooms various interesting applications in spatial-temporal databases. In this work, we study a new probl...