Table 3.

Average and variance of correlation between social factors and social interactions on the 10 random datasets.

		Explicit Interaction	Implicit Interaction
User context	contacts	0.479\($\pm 1.2\times {10}^{-4}$)	0.445\($\pm 2.5\times {10}^{-4}$)
	uploaded images	0.039\($\pm 1.7\times {10}^{-4}$)	0.072\($\pm 3.7\times {10}^{-4}$)
	number of groups	0.348\($\pm 5.81\times {10}^{-5}$)	0.349\($\pm 9.83\times {10}^{-5}$)
	groups members	0.269\($\pm 1.67\times {10}^{-5}$)	0.278\($\pm 9.84\times {10}^{-5}$)
	mean views	0.589\($\pm 1.2\times {10}^{-4}$)	0.699\($\pm 4.46\times {10}^{-5}$)
Image context	number of groups	0.608\($\pm 5.38\times {10}^{-5}$)	0.587\($\pm 6.09\times {10}^{-5}$)
	groups members	0.524\($\pm 8.29\times {10}^{-5}$)	0.479\($\pm 2.34\times {10}^{-4}$)
	number of tags	0.233\($\pm 1.8\times {10}^{-4}$)	0.402\($\pm 8.39\times {10}^{-5}$)