Added check in javadoc for fields and method name
Added basic shell for tfidf calculation
Merge branch 'master' of https://github.com/mjp2ff/aid
Merge
Added tfidf calculation and inputs
lint
Added StringListable interface that all data objects implement to get data for calculating TFIDF. Added all info about method to TFIDF calculation.
Merge branch 'master' of https://github.com/mjp2ff/aid
Lint
Changed difference calculation to use doubles for TFIDF, and propagate TFIDF calculation into difference calculation and output