I previously mentioned the role of a Chief Data Officer in the measurement of the ROI of social business initiatives. Here's an example of how big data could be used to calculate the ROI of an enterprise social network.
Two years ago I had a very interesting discussion with Peter Reiser from Oracle. We both agreed on the fact that the value of an enterprise social network lied in information reuse to speed up task execution, problem solving, exception handling. He told me that there was a "quite simple way"...