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[科学美国人60秒] SSS 2017-11-13

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[科学美国人60秒] SSS 2017-11-13

SSS 20171113

sss
60秒科学节目(SSS)是科学美国人网站的一套广播栏目,英文名称:Scientific American - 60 Second Science,节目内容以科学报道为主,节目仅一分钟的时间,主要对当今的科学技术新发展作以简明、通俗的介绍,对于科学的发展如何影响人们的生活环境、健康状况及科学技术,提供了大量简明易懂的阐释。

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The goal for a lot of tech companies today, figure out what you, the customer,want next before you even ask.It's driven by something called similarity search.
" If you go to Youtube,you watch a video, they are going to suggest similar videos to that one you are watching. Right, that's similarity search. If you go to Amazon and look for similar products, to the one that you are going to buy, that's similarity search." ?, a computer scientist at the ? institute. He says we do similarity searches, too. For example, when we scan faces in the crowd for the one that we know, and even fruitflies do a version related to smell.
" So the  fly is having to solve similar problems of kind of searching through its database of previous experiences and previous odors that it has smelled to determine what should be the most propriate behavioral response to that odor."
But flies tag incoming odors differently from the way modern search algorithms parse similarity. A small group of neurons make an innitial evaluation of the smell. Then a larger set of neurons exerbate it to make a final decision about the smell. Rather than a computer similarity search does it,which is taking something with many dimensions and simplifying it down to a few. So and his colleagues tweaked computer similarity search functions to do it fly style.And then pitted the fly-inspired algorithms against conventional ones.And biologically-inspired code won out better at telling 'like' from 'unlike' on an image-similarity test.
" You know revolution figured it out, figured out a really elegant solution to this very important problem."
The report is in the journal Science. ? says he and his team are looking for ward to partner with tech companies now in hopes of endowing the machines with the time-tested problem solving abilities of the brain, even if it's a fruit fly brain.
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