%0 Conference Paper %1 ester1996 %A Ester, M. %A Kriegel, H. P. %A Sander, J. %A Xu, X. %B Proc. 2 nd Int. Conf. on Knowledge Discovery and Data Mining(KDD ' 96) %D 1996 %K clustering density %P 226-231 %T A Density-Based Algorithm for Discovering Clusters in Large Spatial Databases with Noise