Facebook is reportedly rating users’ trustworthiness on a scale from zero to one. The social network developed the ratings system in an effort to fight fake news on its platform, Tessa Lyons, the product manager in charge of fighting misinformation at Facebook, said in an interview published Tuesday in The Washington Post.

Facebook relies, in part, on reports from users to help catch these stories. If enough people report a story as false, someone on a fact-checking team will look into it. But checking every story that racks up “fake news” reports would be overwhelming, so Facebook uses other information to figure out what it should and shouldn’t bother looking into.

It’s “not uncommon for people to tell us something is false simply because they disagree with the premise of a story or they’re intentionally trying to target a particular publisher,” Lyons said.

Users’ trustworthiness score between zero and 1 isn’t meant to be an absolute indicator of a person’s credibility, Lyons said, nor is there is a single unified reputation score that users are assigned. Rather, the score is one measurement among thousands of new behavioral clues that Facebook now takes into account as it seeks to understand risk. Facebook is also monitoring which users have a propensity to flag content published by others as problematic and which publishers are considered trustworthy by users.