Economist's View: Econometrics and 'Big Data'

I tweeted this link, and it’s getting far, far more retweets than I would have expected, so I thought I’d note it here:
Econometrics and “Big Data”, by Dave Giles: In this age of “big data” there’s a whole new language that econometricians need to learn. … What do you know about such things as:
Decision trees 
Support vector machines
Neural nets 
Deep learning
Classification […]