What is machine learning and how does it work?

Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. The Center conducts public opinion polling, demographic research, content analysis and other data-driven social science research, and doesn't take policy positions. It originated in a research project created in 1990 called the Times Mirror Center for the People & the Press. In 2004, The Pew Charitable Trusts established the Pew Research Center as a subsidiary to house its information initiatives.