Word: faces
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...necessarily the programmers' fault. It comes down to the fact that the software is only as good as its algorithms, or the mathematical rules used to determine what a face is. There are two ways to create them: by hard-coding a list of rules for the computer to follow when looking for a face, or by showing it a sample set of hundreds, if not thousands, of images and letting it figure out what the ones with faces have in common. In this way, a computer can create its own list of rules, and then programmers will tweak them...
...bottleneck: computing power. The constant flow of images is usually too much for the software to handle, so it downsamples them, or reduces the level of detail, before analyzing them. That's one reason why a person watching the YouTube video can easily make out the black employee's face, while the computer can't. "A racially inclusive training set won't help if the larger platform is not capable of seeing those details," says Steve Russell, founder and chairman of 3VR, which creates face recognition for security cameras...
...adjust its webcam's sensitivity to backlighting. Nikon says it's working to improve the accuracy of the blink-warning function on its Coolpix cameras. (Sony wouldn't comment on the performance of its Cyber-shot cameras and said only that it's "not possible to track the face accurately all the time.") Perhaps in a few years' time, the only faces cameras won't be able to pick up will be those of the blue-skinned humanoids from Avatar...
Advisers also warn investors to choose larger ETFs over smaller start-up ones, especially when it comes to global and emerging-market funds. Unlike mutual funds, investors face price spreads when buying and selling ETFs, and these spreads can be quite wide - spanning several percentage points in some cases - when the ETF is small or its underlying stocks don't trade much...
...research has affected you a lot on a personal level. How? I'm a physician who fights cancer. In spite of our best efforts, not everybody is going to be cured. My absolute understanding that there is an afterlife for all of us - and a wonderful afterlife - helps me face cancer, this terribly frightening and threatening disease, with more courage than I've ever faced it with before. I can be a better physician for my patients...