臉譜網新聞推送為半人工 陷政治偏見風波

　　6月23日CNN聽力：臉譜網消息推送為半人工 陷政治成見風浪

　　AZUZ: You know when you're Facebook, and storiesup on your trending feed. The company says thatthe employees who review those stories are notallowed to prioritize one political view over another.

　　Here's why the company is talking about this. Lastweek, the technology news site Gizmodo published areport that accused Facebook of promoting a liberalnews bias. According to the report, reviewers of the site's trending news section allegedly keptstories about conservative subjects from appearing in people's feeds, even though they wereactually trending among users.

　　Facebook CEO Mark Zuckerberg says his company is investigating the report and that it's foundno evidence that this happened. And if it does, Facebook will take steps to address it.

　　LAURIE SEGALL, CNN SENIOR TECH CORRESPONDENT: Ever wonder how a topic becomestrending on Facebook, you know the column "Hot Topics" to the right of your newsfeed?

　　Well, here's how it works: according to Facebook's head of search, these topics are surfaced byan algorithm. Now, the idea is to flag most popular conversations happening on Facebook.And also there's this human element, the topics are reviewed by a team of curators who makesure they're actually trending in the real world.

　　So, here are the guidelines: curators are supposed to weed out hoaxes, spam and duplicatetopics. A former curator said there's transparency in these decisions. Employees actually haveto write out the reasons they blacklist a topic. I'm also told that some curators may surface aconversation that might not yet be trending. This is during a breaking news event.

　　So, here's a controversy. According to a Gizmodo report, former Facebook contractors saycurators routinely suppressed stories about conservative issues. In a statement, Facebooksays, no, they don't prioritize one viewpoint over another.

　　But is the human element inadvertently biasing what we see on Facebook?

　　People consume news from Facebook. The company has this power to serve as what we seeand also what we don't see.

　　So, this report raises an important question. Could the folks on the team have subconsciouslyor subtly steered away from conservative stories? And if so, what responsibility doesFacebook have?

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