Java Reference
In-Depth Information
How do we know which words have which types of sentiment? This question can be
answered using sentiment lexicons. In this context, lexicons are dictionaries that contain
the sentiment meanings of different words. The General Inquirer (
ht-
tp://www.wjh.harvard.edu/~inquirer/
)
is one such lexicon. It contains 1,915 words that are
considered to be positive. It also contains a list for words denoting other attributes such as
pain, pleasure, strong, and motivation. There are other lexicons such as the MPQA Sub-
jectivity Cues Lexicon (
http://mpqa.cs.pitt.edu/
).
At times it may be desirable to build a lexicon. This is typically done using semi-super-
vised learning where a few labelled examples or rules are used to bootstrap the lexicon
