A basic sentiment analyzer, based on clojure-opennlp and using the subjectivity lexicon. Check out the training file in src/models/sentiment.train. Also, the subjectivity lexicon parsed into JSON is provided under src/parsed_lexicon.json.

In the REPL (after running lein repl):

(use 'sentimental.core)
(categorize "I am happy!")
; if working with a lot of text, compact will provide
; a "bag-of-words" representation with stop words removed
; and stemming of each word (using Snowball)
(categorize (compact long-document))

Distributed under the Eclipse Public License, the same as Clojure.