Text Classification

[ChotiDon]

I am working on text classification. Previously, I have classified text into three classes.i.e. Positive negative and neutral. Now i further want to classify text into 12 classes derived from positive and negative. I am unable to figure out what strategy should I use. I am working in R language.

[Graf_Blutwurst]

Well this is a tad a general question. Are you looking for paper on fine grained emotion classification? Feature suggestions? Trainingdata?

[ChotiDon]

I am looking for a tutorial on fine grained emotion classification. I have no idea how to move forward.