With help from Edward Miguel, an economist at Berkeley, and from the city tax department, we matched the data with the size of each UN mission.

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They then got hold of another collection of movie recommendations, from the imdb Web site, and did the math to show that if a set of imdb ratings was big enough, and matched one from the Netflix data set, they were probably from the same person.

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Pretty soon, location data on your smartphone matched with shopping records gathered from your loyalty card will enable a supermarket to send you personalized, digital coupons for items as you walk down the aisle.

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All of this data is collated and matched against client-employee information, GPS coordinates, detailed flight information for every aircraft that is part of an itinerary for each employee and a matrix of client operational rules and requirements.

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We must meet the challenge posed by the massive growth in data traffic that is not yet matched by infrastructure development.

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By comparison that month, Nasdaq had 19.0% of the matched adv, the New York Stock Exchange had 14.8% matched adv and NYSE Arca had 13.9% matched adv, also according to Arcavision market data.

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They then added in meteorological data from 56 local weather stations, matched to the dates and locations of interest, and used another model to derive values for average emissions.

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All that data is going into an IRS computer to be matched against your tax return when you file it.

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