"Noob Problem: Clustering for selected Attributes"
I am totally new to RM and have the following problem: I to cluster a number of tasks with respect to their runtime which is a given attribute. Unfortunately it is not clear to me how I can tell my k-Means operator that only the runtime attribute should be considered.
I know that I could use a "Select Attributes" before, but I do not want to delete the other attributes. So how can I realize this?
Where can I find examples?