Some lovely research from Northeastern University uses sentiment analysis to show the changing moods of the United States through 24 hours.
In the video below showing changes over the course of a day, colors indicate people’s moods from red (unhappy) to green (happy), while the size of the state shows how much Twitter activity there is.
A few things that stand out: Early morning and late evening are far happier than other times of the day, California and Florida are the happiest states, and from other research on the site, the unsurprising finding that people are happier on weekends than weekdays.
Click through for the detailed research including a high-resolution pdf summarizing the findings.
Visualization of our activities and model
