SIGMOD'04 - Research: Spatial Data Spatially-decaying Aggregation Over a Network: Model and Algorithms Edith Cohen Haim Kaplan Approximation Techniques for Spatial Data Abhinandan Das Johannes Gehrke Mirek Riedewald Joining Interval Data in Relational Databases Jost Enderle Thomas Seidl Matthias Hampel Return to SIGMOD'04 Sessions ©2005 Association for Computing Machinery