Investigation of topographical stability of the concave and convex   Self-Organizing Map variant
  We investigate, by a systematic numerical study, the parameter dependence of the stability of the Kohonen Self-Organizing Map and the Zheng and Greenleaf concave and convex learning with respect to different input distributions, input and output dimensions. 
Fabien Molle (Chalmers Tekniska H\"ogskola, G\"oteborg) and Jens   Christian Claussen (University Kiel)