181 search results - page 20 / 37 » Mining, indexing, and querying historical spatiotemporal dat... |
EDBT
2010
ACM
13 years 11 months ago
2010
ACM
The growing availability of mobile devices produces an enormous quantity of personal tracks which calls for advanced analysis methods capable of extracting knowledge out of massiv...
TCSV
2002
13 years 7 months ago
2002
Video query by semantic keywords is one of the most challenging research issues in video data management. To go beyond low-level similarity and access video data content by semanti...
IDEAS
2007
IEEE
14 years 2 months ago
2007
IEEE
Historically, bitmap indexing has provided an important database capability to accelerate queries. However, only a few database systems have implemented these indexes because of t...
WWW
2004
ACM
14 years 8 months ago
2004
ACM
When searching large hypertext document collections, it is often possible that there are too many results available for ambiguous queries. Query refinement is an interactive proce...
CIKM
2009
Springer
13 years 11 months ago
2009
Springer
We study query processing in large graphs that are fundamental data model underpinning various social networks and Web structures. Given a set of query nodes, we aim to find the g...