Sciweavers

1923 search results - page 107 / 385
» Ranking in Spatial Databases
Sort
View
DASFAA
1999
IEEE
79views Database» more  DASFAA 1999»
14 years 10 days ago
Early Separation of Filter and Refinement Steps in Spatial Query Optimization
The spatial query has been processed in two steps, the filter step and the refinement step, due to a large volume and high complexity of the spatial data. However, this approach h...
Ho-Hyun Park, Chan-Gun Lee, Yong-Ju Lee, Chin-Wan ...
SIGMOD
2008
ACM
111views Database» more  SIGMOD 2008»
14 years 8 months ago
Discovering bucket orders from full rankings
Discovering a bucket order B from a collection of possibly noisy full rankings is a fundamental problem that relates to various applications involving rankings. Informally, a buck...
Jianlin Feng, Qiong Fang, Wilfred Ng
SIGMOD
2008
ACM
206views Database» more  SIGMOD 2008»
14 years 8 months ago
Ad-hoc aggregations of ranked lists in the presence of hierarchies
A variety of web sites and web based services produce textual lists at varying time granularities ranked according to several criteria. For example, Google Trends produces lists o...
Nilesh Bansal, Sudipto Guha, Nick Koudas
GIS
2006
ACM
14 years 9 months ago
Modeling and querying uncertain spatial information for situational awareness applications
Situational awareness (SA) applications monitor the real world and the entities therein to support tasks such as rapid decision-making, reasoning, and analysis. Raw input about un...
Dmitri V. Kalashnikov, Yiming Ma, Sharad Mehrotra,...
ER
2001
Springer
60views Database» more  ER 2001»
14 years 15 days ago
Tripod: A Comprehensive Model for Spatial and Aspatial Historical Objects
Abstract Spatio-temporal extensions to data models have been an active area of research for a number of years. To date, much of this work has focused on the relational data model, ...
Tony Griffiths, Alvaro A. A. Fernandes, Norman W. ...