You could set the minimum length for your token at for instance 2, this would drop all single letter attributes. You can achieve this with the 'filter tokens (by length)' operator
You can also try Filter Tokens by Content or Filter Stopwords (Dictionary), which allows you to provide a file of specific words you want to eliminate.
Brian T. Lindon Ventures Data Science Consulting from Certified RapidMiner Experts
Answers
You can achieve this with the 'filter tokens (by length)' operator
Lindon Ventures
Data Science Consulting from Certified RapidMiner Experts