[null,null,["最后更新时间 (UTC)：2021-05-18。"],[[["FLoC is a privacy-preserving mechanism for interest-based ad selection that groups users into cohorts based on their browsing history without sharing individual data."],["Advertisers can use FLoC cohort data to target ads to users with relevant interests, predict conversion probabilities, and recommend content."],["FLoC calculates user cohorts locally in the browser and does not share individual browsing data with any external parties."],["Users' cohort assignments are periodically recalculated to reflect changes in their browsing behavior."],["FLoC aims to provide an alternative to third-party cookies and other cross-site tracking methods for interest-based advertising."]]],["FLoC, or Federated Learning of Cohorts, allows interest-based ad selection while preserving user privacy. Browsers use an algorithm to assign users to \"interest cohorts\" based on browsing history, recalculated periodically on-device. Advertisers and ad tech platforms gather cohort data to understand group interests. This data enables targeted ad delivery and content recommendations based on shared cohort interests, without individual user tracking. Initial trials of the API are complete, and future iterations are under development.\n"]]
