Text as Data – Matthew Gentzkow, Stanford; Bryan T. Kelly, Yale and AQR Capital Management; Matt Taddy, Chicago Booth: “An ever increasing share of human interaction, communication, and culture is recorded as digital text. We provide an introduction to the use of text as an input to economic research. We discuss the features that make text different from other forms of data, offer a practical overview of relevant statistical methods, and survey a variety of applications.” [h/t Matthew McCormick]