As the Obama Administration’s new “Big Data Research and Development Initiative” has made clear, the “big data” era is officially upon us. The term – “big data” has been used in multiple ways, but most generally refers to the avalanche of “raw data” generated by the internet and other new kinds of data-capturing sensor and digital technologies. Or, as one big data guru more pithily put it, it is “all the stuff we do online” – and more.…