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SSS 2009-04-29

时间:2010-05-17 08:15来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American’s 60-Second Science. I’m Adam Hinterthuer. Got a minute?


Netflix isn’t satisfied with the way its system recommends new movies to customers based on their viewing habits. So the mail-order DVD rental1 company has offered outside teams prizes to improve its accuracy. A group from AT&T Laboratories has already won $50,000 for figuring out a formula that’s 8.43 percent better at telling a film buff what to rent. And Netflix is sweetening the pot—the team that can improve recommendation accuracy by 10 percent will get a cool million.


The contest requires that recommendations be made using the ratings customers give other movies they’ve rented. But the researchers say whether or not a person explicitly2 rates their returns, their rental history can be used as an “inferred rating” of things like genres3 or actors. What’s more, the preferences of other customers can predict how someone with similar rental histories would score a film. The research is explained in the May issue of the journal IEEE Spectrum4.


There are certainly bigger problems to solve these days than recommending movies. But it would be nice to know why Netflix keeps insisting after I’ve returned Slumdog Millionaire and Delicatessen that I’d really like Annie.


Thanks for the minute. For Scientific American’s 60-Second Science. I’m Adam Hinterthuer.
 


点击收听单词发音收听单词发音  

1 rental cBezh     
n.租赁,出租,出租业
参考例句:
  • The yearly rental of her house is 2400 yuan.她这房子年租金是2400元。
  • We can organise car rental from Chicago O'Hare Airport.我们可以安排提供从芝加哥奥黑尔机场出发的租车服务。
2 explicitly JtZz2H     
ad.明确地,显然地
参考例句:
  • The plan does not explicitly endorse the private ownership of land. 该计划没有明确地支持土地私有制。
  • SARA amended section 113 to provide explicitly for a right to contribution. 《最高基金修正与再授权法案》修正了第123条,清楚地规定了分配权。 来自英汉非文学 - 环境法 - 环境法
3 genres f90f211700b6afeaafe2f8016ddfad3d     
(文学、艺术等的)类型,体裁,风格( genre的名词复数 )
参考例句:
  • Novel and short story are different genres. 长篇小说和短篇小说是不同的类别。
  • But confusions over the two genres have a long history. 但是类型的混淆,古已有之。 来自汉英文学 - 散文英译
4 spectrum Trhy6     
n.谱,光谱,频谱;范围,幅度,系列
参考例句:
  • This is a kind of atomic spectrum.这是一种原子光谱。
  • We have known much of the constitution of the solar spectrum.关于太阳光谱的构成,我们已了解不少。
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