Good Morning, before I had built a process for the "k-nn" and with a specific dataset it worked well. Now I changed the dataset (attached) and I can not run the process. The system tells me I can not find the specified attributes. Can someone help me? Tomorrow I have a deadline.
The process is attached below! In this email attaching the dataset.
The great thing about RapidMiner is that it checks your metadata before you even click "run." If you've changed your dataset, and there are new names or new roles, then chances are that one of your parameter settings is complain. Trace through your process and find the operators that have a "!" in triangle sign, those are the operators where the metadata condition is not met. Double check that right attribute is available to the operator and in the right data format and role.
The read CSV operator does not know how to read the CSV files it is presented with. You could run the Import Configuration Wizard on an example CSV file to fix this. Unfortunately, however, I can see that the files you provided have different attributes so this makes it impossible until you have made all the csv files have identical headers.
Then I notice that following operators are referring to attributes that don't exist. These can be fixed by changing the parameters for these operator.