Facebook reverses postelection algorithm changes that boosted news from authoritative sources.

Facebook confirmed that it has in the past few days rolled back a change that lifted news from authoritative outlets over hyperpartisan sources after November’s election, signaling a return to normalcy for the social network.

The change involved boosting the weight that Facebook’s news feed algorithm assigned to an internal publisher quality score known as “news ecosystem quality,” or N.E.Q. It was implemented several days after the election as part of Facebook’s emergency “break glass” plan to combat misinformation during the critical postelection period, while votes were still being counted.

The change resulted in an increase in Facebook traffic for mainstream news publishers including CNN, NPR and The New York Times, while partisan sites like Breitbart and Occupy Democrats saw their numbers fall. After the election, some Facebook employees asked at a company meeting whether the “nicer news feed” could stay, according to several people who attended.

But they were…

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