EDBT'04 - Session 7: Query Processing Techniques for Spatial Databases NNH: Improving Performance of Nearest-Neighbor Searches Using Histograms Liang Jin Koudas Nick Chen Li Clustering Multidimensional Extended Objects to Speed Up Execution of Spatial Queries Cristian-Augustin Saita Francois Llirbat Spatial Queries in the Presence of Obstacles Jun Zhang Dimitris Papadias Kyriakos Mouratidis Manli Zhu Return to EDBT'04 Sessions ©2005 Association for Computing Machinery