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» Selectivity Estimation in Spatial Databases
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ICDE
2008
IEEE
140views Database» more  ICDE 2008»
14 years 9 months ago
Top-k Spatial Joins of Probabilistic Objects
Probabilistic data have recently become popular in applications such as scientific and geospatial databases. For images and other spatial datasets, probabilistic values can capture...
Vebjorn Ljosa, Ambuj K. Singh
ICMCS
2006
IEEE
181views Multimedia» more  ICMCS 2006»
14 years 1 months ago
A Fast Downsizing Video Transcoder for H.264/AVC with Rate-Distortion Optimal Mode Decision
This paper focuses on the mode decision and motion selection problem when H.264/AVC video streams are transcoded in spatial resolution. A fast downsizing transcoding scheme is dev...
Huifeng Shen, Xiaoyan Sun, Feng Wu, Houqiang Li, S...
ICDE
2007
IEEE
124views Database» more  ICDE 2007»
14 years 9 months ago
On MBR Approximation of Histories for Historical Queries: Expectations and Limitations
Traditional approaches for efficiently processing historical queries, where a history is a multidimensional timeseries, employ a two step filter-and-refine scheme. In the filter s...
Reza Sherkat, Davood Rafiei
VLDB
1995
ACM
129views Database» more  VLDB 1995»
13 years 11 months ago
A Cost Model for Clustered Object-Oriented Databases
Query processing is one of the most, critical issues in Object-Oriented DBMSs. Extensible opt,imizers with efficient, search strategies require a cost model to select the most eff...
Georges Gardarin, Jean-Robert Gruser, Zhao-Hui Tan...
ICMCS
2006
IEEE
136views Multimedia» more  ICMCS 2006»
14 years 1 months ago
Motion Aligned Spatial Scalable Video Coding
A motion aligned spatial scalable video coding scheme (MA-SSC) is proposed in this paper. Different from the traditional spatial scalable coding schemes derived from MPEG-2, in th...
Debing Liu, Yuwen He, Shipeng Li, Debin Zhao, Wen ...