Hi, at the moment i have lot of data an try to investigate, if it is possible to approximate this data and to get to know, what's the correlation between these Parameters. If I use Radial Basis Functions mit RBF Type "CS21" in Hyperstudy 12, I get good R-Square values for the Validationsmatrix and therefore a satisfying approximation. Unfortunately, if I search for "CS21" in the Hyperworks Desktop or anywhere else, I'm not able to find any Infomation what this RBF Type is. Does anybody know what type of Basis Functions the option "CS21" uses? Thanks in advance!