| 摘要 |
Particular embodiments detect events associated with information about activities that a user has engaged in. The activities may be associated with a location or location-agnostic. Based on the received information, the social-networking system sends the user a request for follow-up information after an appropriate time delay. The time delay may vary based on the user activity and the context of the event that triggered the request. After the follow-up information is received, such information is stored in the social-networking system and may be used to determine recommendations, sponsored stories, advertisements, etc. to send to friends of the user. The information may also be used for ranking or filtering recommendations. |
| 主权项 |
1. A method comprising:
receiving, by one or more processors associated with one or more computer servers, an indication of an event performed by a user node of a social graph toward a concept node of the social graph, the event associated with an activity; determining, by the one or more processors, that a first user associated with the user node may be able to provide further information about the activity; determining, by the one or more processors, a time to send a request for further information about the activity to the first user; sending, by the one or more processors, the request to the first user at the determined time; and receiving, by the one or more processors, a response from the first user with the further information about the activity. |
