482 search results - page 22 / 97 » Selectivity Estimation in Spatial Databases |
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
—In this paper a spatial phase coding (SPC) scheme is investigated for its application in OFDM systems. With SPC the phase relation of the signals between multiple transmit anten...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Moving objects databases managing spatial objects with continuously changing position and extent over time have recently found large interest in the database community. Queries ab...
ICDE
2002
IEEE
14 years 9 months ago
2002
IEEE
The ability to provide accurate and efficient result estimations of user queries is very important for the query optimizer in database systems. In this paper, we show that the tra...
AMW
2010
13 years 9 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
ECIR
2011
Springer
12 years 11 months ago
2011
Springer
Query-by-example video retrieval is receiving an increasing attention in recent years. One of the state-of-art approaches is the Bag-of-visual Words (BoW) based technique, where im...