Tracking Movements and Attention of Crowds in Real Time Analysing Social Streams The case of the Open Ceremony of London 2012

To manage a big event require tracking in real time the movement of crowds. Solution based on mobile network data analysis are effective, but expensive. Obtaining comparable results by analysing public social stream has a clear commercial potential, especially considering that, being able to access also the content of a micro-post, the analysis can also track the attention of crowds.