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» Aggregates in Possibilistic Databases
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ICDE
2009
IEEE
90views Database» more  ICDE 2009»
14 years 1 months ago
Uncertain Location Based Range Aggregates in a Multi-dimensional Space
— Uncertain data are inherent in many applications such as environmental surveillance and quantitative economics research. Recently, considerable research efforts have been put i...
Ying Zhang, Xuemin Lin, Yufei Tao, Wenjie Zhang
DASFAA
1999
IEEE
90views Database» more  DASFAA 1999»
13 years 11 months ago
Spatial Presentation and Aggregation of Georeferenced Data
In this paper, we will introduce a method of spatial presentation of georeferenced data in a three-dimensional space. Photographs, Quicktime VR's, videos, and computer graphi...
Kengo Koiso, Takahiro Matsumoto, Katsumi Tanaka
PODS
2001
ACM
127views Database» more  PODS 2001»
14 years 6 months ago
Optimal Aggregation Algorithms for Middleware
Assume that each object in a database has m grades, or scores, one for each of m attributes. For example, an object can have a color grade, that tells how red it is, and a shape g...
Ronald Fagin, Amnon Lotem, Moni Naor
ER
2006
Springer
83views Database» more  ER 2006»
13 years 10 months ago
Time-Aggregated Graphs for Modeling Spatio-temporal Networks
regated Graphs for Modeling Spatio-Temporal Networks - An Extended Abstract Technical Report Department of Computer Science and Engineering University of Minnesota 4-192 EECS Build...
Betsy George, Shashi Shekhar
AI
2004
Springer
14 years 5 days ago
Distributed Data Mining vs. Sampling Techniques: A Comparison
To address the of mining a huge volume of geographically distributed databases, we propose two approaches. The first one is to download only a sample of each database. The second ...
Mohamed Aounallah, Sébastien Quirion, Guy W...