Targeting questions to users of a social networking system

摘要

Users of a social networking system post questions for other users to answer. Questions are automatically tagged based on keywords extracted from text within the posted questions as well as user-selected tags. Users also browse questions asked by other users on the social networking system using an interface that displays questions by topics and sub-topics. Answers may be voted on and sorted by social information related to the browsing user. Affinities for tags are recorded based on users' interactions with the question and answer service. Affinities for tags may also be used to target questions to other users and sort answers.

主权项

1. A method comprising:
retrieving profile information related to the user, the profile information including the user's tag affinities; selecting questions based on tags related to the user's tag affinities; for each of the questions, determining a score for the question by combining the user's tag affinities for the tags; for each of the questions, adjusting the score for the question based on a duration of time elapsed since the user last interacted with one or more questions associated with the tags; sorting the questions based on the adjusted scores for the questions; and providing the highest sorted question in the interface for display to the user.