Table 2.

Results of the best two models predicting comments on Facebook photos.

Model	F1	Specificity	Sensitivity	Accuracy	Top 10 Features	Gain	Cover	Frequency	rho
User + Photo	0.33	0.27	0.92	0.81	is_a_dome	0.167	0.081	0.055	-0.131
					Friends	0.079	0.085	0.075	0.018
					is_Square_Image	0.068	0.024	0.009	0.144
					Comm/Photos_3Months	0.068	0.046	0.055	0.036
					Image size	0.062	0.056	0.049	-0.0854
					FriendshipRequests	0.061	0.052	0.052	0.054
					is_a_website	0.054	0.046	0.040	0.083
					%FriendsFemale	0.039	0.064	0.058	-0.007
					Photos	0.037	0.057	0.043	-0.056
					People_in_photo	0.030	0.033	0.023	0.051
User + Psy	0.33	0.25	0.93	0.82	Photos	0.090	0.073	0.082	-0.067
					Comm/Photos_3Months	0.081	0.070	0.067	0.015
					FriendshipRequests	0.067	0.045	0.064	0.068
					WallActivities	0.063	0.034	0.050	0.012
					UpdatesUserImage	0.059	0.053	0.061	-0.015
					Posts	0.053	0.072	0.064	0.025
					Friends	0.049	0.056	0.038	0.035
					%FriendsFemale	0.040	0.035	0.038	-0.023
					Big5-Conscientiousness	0.037	0.029	0.020	0.009
					Problematic_FB_use	0.035	0.033	0.032	0.022