Create new Attribute in Weka (String)

Question

So my question is how do I declare a new attribute for weka when all my data is a collection of texts.

My goal is to create new attributes, so that I can use a decision tree algorithm. For example, I want an attribute that Filters for all these Keywords (Winner, Free, Subscription)

ARFF File viewed in Notepad++

Answer 1

If you are thinking of generating new attributes from the textual data in your STRING attribute, then you can use the StringToWordVector filter.

For general info on handling textual data, have a look at the Text categorization with Weka wiki article.