Mislove : We trace the thoughts of a significant fraction of the population . He 's researching profiles of all Twitter users based on their thoughts . Research looks , for example , for occurrences of ` ` happy '' or ` ` unhappy '' thoughts in tweets .
Mislove : Tweets trace the thoughts of a significant fraction of the population . He 's researching mood of U.S. Twitter users based on their tweets . Research looks , for example , for occurrences of `` happy '' or `` unhappy '' words in tweets .