Enhancing Collaborative Filtering by User-User Covariance Matrix

Table 1

A user-user covariance matrix.

		-3.056	-0.444	-2.222	2.222
	-3.056		0.111	2.389	-1.972
	-0.444	0.111		-0.889	1.222
	-2.222	2.389	-0.889		-2.889
	2.222	-1.972	1.222	-2.889