I would like to write a program that can automatically group e.g. 'happiness', 'happily', 'happy' into 'happy':
- What do I need to read to get a handle on this subject? What is it called? What is the state-of-the-art?
- Are there any out of the box tools I can use for this?
- WordNet claims to include some cross-POS links, and its home page states that "Relational adjectives ("pertainyms") point to the nouns they are derived from (criminal-crime).". How do I access these using, for example, Python's NLTK?
I've read some posts referring to 'nounification' (I guess I want to 'adjectify') but can't find any solid answers.
Appreciate the help!