The Retirement of Amex’s Ken Chenault Means Just 3 CEOs on the Fortune 500 Are Black

His retirement was long in the making. Credit card giant American Express announced Wednesday that Kenneth Chenault, its CEO of 16 years, was passing on the torch to younger blood: 58-year-old Stephen Squeri. “We’re starting a new chapter from a position of strength and this is the right time to make the leadership transition to […] Read more »

New Theory Cracks Open the Black Box of Deep Neural Networks

Even as machines known as “deep neural networks” have learned to converse, drive cars, beat video games and Go champions, dream, paint pictures and help make scientific discoveries, they have also confounded their human creators, who never expected so-called “deep-learning” algorithms to work so well. No underlying principle has guided the design of these learning […] Read more »