Identify the right signals from the whole mass of information

With his experience in sports paris, Nate Silver explains the various areas where big data can be used to predict the future: financial markets, weather, crime, etc.
While the book is illustrated with examples, but it does not fit into a mathematical or statistical explanation of data.
Among all the flux informaTION, the most difficult is whether an event is the effect of another, or rather the cause of a future event.

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