Keyphrases
- online social networks
- social networks
- collaborative filtering
- network structure
- social relationships
- social networking
- data analysis
- online social networking
- social media
- social networking sites
- social relations
- user preferences
- social ties
- social network analysis
- user activity
- social graphs
- intrusion detection
- online communities
- network analysis
- random walk
- online social
- viral marketing
- overlapping communities