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KDD
2010
ACM
253views Data Mining» more  KDD 2010»
15 years 10 months ago
Mining periodic behaviors for moving objects
Periodicity is a frequently happening phenomenon for moving objects. Finding periodic behaviors is essential to understanding object movements. However, periodic behaviors could b...
Zhenhui Li, Bolin Ding, Jiawei Han, Roland Kays, P...
GEOINFORMATICA
2008
123views more  GEOINFORMATICA 2008»
15 years 6 months ago
Efficient Implementation Techniques for Topological Predicates on Complex Spatial Objects
Topological relationships like overlap, inside, meet, and disjoint uniquely characterize the relative position between objects in space. For a long time, they have been a focus of...
Reasey Praing, Markus Schneider
SIGMOD
2008
ACM
188views Database» more  SIGMOD 2008»
16 years 6 months ago
HERMES: aggregative LBS via a trajectory DB engine
We present HERMES, a prototype system based on a powerful query language for trajectory databases, which enables the support of aggregative Location-Based Services (LBS). The key ...
Nikos Pelekis, Elias Frentzos, Nikos Giatrakos, Ya...
IDEAS
2007
IEEE
84views Database» more  IDEAS 2007»
16 years 29 days ago
Multiple Entry Indexing and Double Indexing
Traditional indexing techniques are not well suited for complex data types such as spatial, spatio-temporal, and multimedia data types, where an instance is a composite of multipl...
Victor Teixeira de Almeida, Ralf Hartmut Güti...
IDEAS
2003
IEEE
86views Database» more  IDEAS 2003»
15 years 12 months ago
A Medium Complexity Discrete Model for Uncertain Spatial Data
This paper presents a method for representing uncertainty in spatial data in a database. The model presented requires moderate amounts of storage space. To compute the probability...
Erlend Tøssebro, Mads Nygård