Access to social network data
- Email
We can understand the user's friend information by analyzing the user's contact list, and we can further measure the familiarity of the two users by studying the frequency of email exchanges between the two users. - User registration information
- User's location data
- Discussions and discussion groups
- Instant Messenger
- Social networking sites
Social graph and interest graph
The social network represented by QQ is called a social graph. People's friends are generally people they know in a real society, such as relatives, classmates, colleagues, etc., and the friend relationship needs to be confirmed by both parties.
The social network represented by Weibo is called an interest graph. People's friends are often unknown in reality, but they are only built out of interest in the other party's speech, and the relationship is also a unidirectional concern. relationship.
Introduction to Social Network Data
The reason why social recommendation is valued by many websites is due to the following advantages:
- Friends recommendation can increase the trust of recommendation
- Social networks can solve the cold start problem
