1 Subjects: “...social network...”

2 Subjects: “...social network...”

3 Subjects: “...social network...”

4 Subjects: “...social network model...”

5 Subjects: “...social network analysis...”

6 Subjects: “...social network analysis...”

7 Subjects: “...social networks...”

8 Subjects: “...social networking sites...”

9 Subjects: “...social networks...”

10 “... to smartphone-enabled citizen sensing data from social networks and personal health devices, which requires...”