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新华网8月7日电 据美国科技网站Gizmodo报道，脸谱网总部7日在一项活动中介绍了新鲜事推送中的排序奥秘，还透露新改进即将生效，用户可以在推送中发掘旧闻。
脸谱网平均每个用户每天能看到近1500条新鲜事，全部看完是不现实的，脸谱网需配备一个优化新鲜事的系统，使每个用户登录后就能看到自己可能感兴趣的内容。
为了向用户推送300条左右更有针对性的新鲜事，脸谱网在以下方面追踪用户操作以更好地了解用户喜好。
用户与发布新鲜事的朋友、公共页面、公众形象（如演员、记者）的互动频率，具体新鲜事得到的外界或用户朋友圈的喜欢、分享和评论的数量，
用户过去对此类热帖的关注度，
用户及其他脸谱网其他使用者是否掩藏或报告特定帖
脸谱网公开了他们是如何实现这一功能的，这一行为合乎情理。
但此次报道并不完全要解释这一功能如何运行，而是要揭示之后生效的新改进。自本月7日起，脸谱网将引入一项排序算法的改进，那些符合用户兴趣的旧闻也将出现在新鲜事推送的顶部，只要旧闻仍在被其他用户喜欢或分享。
脸谱网要解决的问题是，通常情况下，用户只会看推送中57%左右的内容，而现在，脸谱网将不再在推送中堆积新鲜事，而是从用户上次阅读位置继续，可以说，继续推送的只会是用户之前没看到的最有价值的内容。脸谱网称这项程序早期测试得到的结果是，用户阅读新鲜事的比例增至70%。
此次活动除了提供上述信息，脸谱网还表示将告知用户关于新鲜事推送排序算法的改进。该政策在公司领域并不是首次尝试，但确实能很大程度上消解用户受挫感。一般来说，如果人们知道了秘密武器的奥秘，对于秘密武器就不会太反感。
译者：贺飞
百度新闻与新华网国际频道合作稿件，转载请注明出处。
Facebook Shows Off the Algorithmic Secret Sauce Behind Your News Feed
At an event at its headquarters, Facebook explained how exactly stories are ranked in your news feed. It also showed off new changes that are coming, which are designed to help you discover older content in your feed.
Everyday, there are roughly 1500 different stories the average user could see and since you don"t have time to see all of them, Facebook needs a system for prioritizing those stories so that the ones that are likely to be interesting to a particular user will show up when they login.
In an effort to show you a more relevant news feed selection of some 300 stories, Facebook adapts to your behavior in the following ways:
How often you interact with the friend, Page, or public figure (like an actor or journalist) who posted The number of likes, shares and comments a post receives from the world at large and from your friends in particular
How much you have interacted with this type of post in the past
Whether or not you and other people across Facebook are hiding or reporting a given post
It"s pretty nice of them to show you how it all works, huh? Makes sense.
But today"s story wasn"t strictly about the way things have worked all along—it was also about revealing changes that will take effect going forward. Starting today, Facebook is introducing a change to the ranking algorithm that will surface older relevant stories at the top of your feed as long as they"re still getting active likes, shares, etc.
The problem Facebook is trying to solve is that on a regular basis, people are reading only about 57-percent of the stories in their news feed before they stop scrolling. Now, rather than heap a bunch of new stories on top of your feed, Facebook will facilitate picking up where you left off, so to speak, except that it"ll only be the very best of the stuff you didn"t get to. According to Facebook, early tests of this new method result in users reading as much as 70-percent of their news feed.
Beyond the actual informational portion of today"s event, Facebook also said that it would begin a policy of updating users about how the news feed ranking algorithm is changing. This certainly isn"t the first time a company has done this, but it should help deal with user frustration in a big way. People are a lot less likely to hate the secret sauce if they know all the ingredients. [Facebook] (来源：新华国际)
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