How cell phone data can help redesign cities

With the rise of Big Data, methods used to study the movement of stars or atoms can now reveal the movement of people. This could have important implications for cities.

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  • A treasure trove of mobility data from devices like smartphones has allowed the field of "city science" to blossom.
  • I recently was part of team that compared mobility patterns in Brazilian and American cities.
  • We found that, in many cities, low-income and high-income residents rarely travel to the same geographic locations. Such segregation has major implications for urban design.
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Algorithm is 88% accurate at spotting dementia in how a person drives

New machine-learning algorithms from Columbia University detect cognitive impairment in older drivers.

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  • Driving a car is a complex activity that involves perceptual and motor skills.
  • Newly developed algorithms can identify cognitive problems in older drivers based on their driving habits with 88% accuracy.
  • The machine learning algorithms incorporate both driving behaviors and demographic information.
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