Suppose you have a collection of e-mail messages from users of your product or service. You don't have time to read every message so you want to programmatically determine if the tone of each message ...

BACKGROUND Demographers are increasingly interested in connecting demographic behaviour and trends with ‘soft’ measures, i.e., complementary information on attitudes, values, feelings, and intentions.

Planet Money tries to make a program that reads Donald Trump's tweets and then trades stocks. The first step is training the program to interpret the tweets using something called sentiment analysis.

S&P Dow Jones Indices is launching the S&P 500 Twitter Sentiment Index, which aims to use the Twitter API to track S&P 500 components that are trending in sentiment. The novel use of Twitter's API ...