The algorithms powering Facebook and Instagram, which drive what billions of people see on the social networks, have been in the cross hairs of lawmakers, activists and regulators for years.

Facebook “seems to plan to keep the results of its research in-house,” Nicolas Kayser-Bril of Algorithm Watch told Recode after the announcement of the new teams.

TikTok announced it would disclose its moderation and data practices and reveal its algorithm code to encourage competition — and took a jab at Facebook’s history of gobbling up competing apps ...