482 search results - page 71 / 97 » Selectivity Estimation in Spatial Databases |
VLDB
2009
ACM
14 years 7 months ago
2009
ACM
In this paper, we study the problem of continuous monitoring of reverse k nearest neighbor queries. Existing continuous reverse nearest neighbor monitoring techniques are sensitive...
BC
2006
13 years 7 months ago
2006
Abstract In natural images, the distance measure between two images taken at different locations rises smoothly with increasing distance between the locations. This fact can be exp...
WWW
2009
ACM
14 years 8 months ago
2009
ACM
Contextual advertising (also called content match) refers to the placement of small textual ads within the content of a generic web page. It has become a significant source of rev...
GIS
2007
ACM
14 years 8 months ago
2007
ACM
Accurate and efficient integration of geospatial data is an important problem with applications in areas such as emergency response and urban planning. Some of the key challenges ...
TCOM
2010
13 years 2 months ago
2010
Abstract--This paper proposes spectral efficient relayassisted transmit diversity techniques, i.e., space-time and space-frequency block codes (STBC/SFBC), for single carrier frequ...