Direct Condensing: An Efficient Voronoi Condensing Algorithm for Nearest Neighbor Classifiers.

Takekazu Kato Toshikazu Wada Direct Condensing: An Efficient Voronoi Condensing Algorithm for Nearest Neighbor Classifiers. 474-477 2004 ICPR (3) http://doi.ieeecomputersociety.org/10.1109/ICPR.2004.306 db/conf/icpr/icpr2004-3.html#KatoW04