What is better for clustering my variables? (problem 2)
In order to reduce the dimensionality of this data I know I want to cluster the data, but I'm unsure which method is best to use. Currently I'm thinking of using a self ordering map, but could also use K-means clustering approach. Does any one have any idea which should work better (or what situations each works well in?)
My thoughts are to run PCA on the remaining clusters to further reduce the dimensionality.