SELECTING CONTENT ITEMS FOR PRESENTATION TO A SOCIAL NETWORKING SYSTEM USER IN A NEWSFEED

摘要

In order to increase the likelihood that a user will view content items previously identified for presentation but not viewed by the user, social networking systems are associated with a user identifying content items provided to the user and provided content items viewed by the user. Access the browsing status. Based on the browsing status, a content item previously provided to the user but not viewed by the user is identified. Additional content items whose status has changed since the content item has been presented to the user are also identified. Content items that have been previously presented to the user but have not been viewed and have at least a critical relevance to the user are ranked along with the additional content items. Based on the ranking, content items are selected for presentation to the user.