Believe I heard about a project a UW student did predicting crime in San Francisco based on volume of vulgar tweets in a given area. Not sure if it's on github

Believe I heard about a project a UW student did predicting crime in San Francisco based on volume of vulgar tweets in a given area. Not sure if it's on github anywhere but you can always start with that idea. Nothing about specifics of the crimes, just where a high volume of them would be located.