Table 3. Pairwise correlations between feature variables.

	Comments	Messages	Wall Posts	Likes	Photo Tags	Same Photo	Pokes	Family Edges	Event Invites	Same Gender	SameEmployer	Same School	Group Invites	Age Diff
Comments	1.00	0.38	0.43	0.65	0.31	0.27	0.18	0.28	0.23	0.07	0.08	0.06	0.06	-0.05
Messages		1.00	0.18	0.35	0.14	0.12	0.22	0.10	0.07	−0.05	0.00	−0.01	0.08	0.01
Wall Posts			1.00	0.45	0.34	0.30	0.16	0.13	0.15	0.02	0.05	0.06	0.03	−0.07
Likes				1.00	0.25	0.27	0.22	0.16	0.11	0.03	0.07	0.05	0.03	−0.04
Photo Tags					1.00	0.72	0.09	0.07	0.27	−0.01	0.07	0.07	0.02	−0.05
Same Photo						1.00	0.06	0.06	0.22	0.03	0.09	0.10	0.00	−0.06
Pokes							1.00	0.02	0.04	−0.05	0.00	0.01	0.00	−0.04
Family Edges								1.00	0.08	0.12	0.02	−0.01	0.00	−0.03
Event Invites									1.00	0.01	0.01	0.10	0.07	−0.03
Same Gender										1.00	0.02	0.02	0.01	0.00
Same Employer											1.00	0.01	0.05	−0.02
Same School												1.00	0.05	−0.20
Group Invites													1.00	−0.02
Age Diff														1.00