prediction with new attribute
I am currently building a predictive model. I have a data set of 200x500. I want to use SVM to predict the next 10 attribute so when i finish the new data set will be 200x510. I have tried to loop and generate new attribute and replace the value with prediction values but it does not work since I do not understand how to set up the macro to generate attribute with numbers, I want the new attribute to have names like "att501, att502, att503, etc... ". Any help would be appreciated.