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Facebook wants to set the record straight on its editorial policies so the topic will stop trending on the social network.
The Menlo Park, Califoia, social network made public its most current Trending Topics guidelines on Thursday, part of an effort to combat reports that it's politically biased. A 28-page inteal document offered a glimpse about how Facebook chooses material that appears in its popular news box.
In the guidelines, Facebook details how a combination of computer algorithms and human editors determine what should be a trending topic on a Facebook page. Algorithms first detect stories that are being widely shared on the platform, then human editors cross-reference the stories to see if they're being covered by 10 major news outlets, including CNN and Fox News Chael.
Facebook has been accused of bias regarding the news topics it says are trending.
Screenshot by Shara Tibken/CNET"If [a story] is, the topic is given an importance level that may make the topic more likely to be seen," Justin Osofsky, Facebook's vice president of global operations, wrote in a blog post.
The process Facebook uses to determine its Trending Topics gained national attention earlier this week after the tech blog Gizmodo reported that Facebook "news curators" had been told to suppress stories from conservative news outlets so its more than 1.65 billion monthly users wouldn't see them.
The report triggered a reaction from Republicans, with some asking for a Congressional investigation into the social network's practices.
Facebook released its guidelines after The Guardian posted inteal documents Thursday describing the social network's policies. Facebook told CNET that those guidelines weren't its current parameters.
In a statement to CNET, Osofsky said the social network relies on more than 1,000 sources of news "to help verify and characterize world events and what people are talking about."
He denied claims that Facebook has been biased.
"The guidelines demonstrate that we have a series of checks and balances in place to help surface the most popular stories, regardless of where they fall on the ideological spectrum," Osofsky wrote in the blog post. "Facebook does not allow or advise our reviewers to discriminate against sources of any political origin, period."
Republican Sen. John Thune of South Dakota, who chairs a committee that oversees technology and Inteet issues, earlier this week encouraged Congress to look into Facebook's practices. In a terse statement, Thune said, "It is beyond disturbing to lea that this power is being used to silence viewpoints and stories that don't fit someone else's agenda."
The furor over Facebook's editorial policies comes as the company gains more control over our news consumption. Social media now trails only television as a source of news, according to a Nielsen study released this week.
CNET's Shara Tibken contributed to this report.
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