chapter  5
Why Don’t Tweets Consistently Track Elections? Lessons from Linking Twitter and Survey Data Streams
ByJosh Pasek and Jake Dailey
Pages 28

If its proponents are to be believed, the tools of data science stand poised to upend our political, social, and economic worlds. Companies that exploit “big data” will gain new insights that help them optimize their supply chains and better sell their products (e.g., Waller & Fawcett, 2013), physicians will soon identify and prevent medical ailments before they become life-threatening through wearable medical technology (cf. Steinhubl, Muse, & Topol, 2015), and computational social scientists will be able to rely on user-generated data that allow us to observe social phenomena unobtrusively, in real time, and at a vast scale (Lazer et al., 2009). These benefits are expected to accrue from the ability to passively collect and analyze trace data generated by our increasingly digital lives.