Table II. The paired t -tests results...

Table II.

The paired t-tests results for each datasets

Test instance	Our approach	HR_Wei approach	LDA-based approach	CF approach
MovieLens 20M – Precison
Mean	0.128	0.118	0.112	0.081
Std.	0.077	0.079	0.069	0.037
t		4.434	5.408	3.635
p value		0.002	0.000	0.005
Movielens 20 M – Recall
Mean	0.439	0.427	0.417	0.273
Std.	0.106	0.108	0.105	0.089
T		4.092	11.027	23.033
p value		0.000	0.000	0.006
CiteULike – Precison
Mean	0.071	0.067	0.059	0.025
Std.	0.034	0.031	0.029	0.021
t		3.608	6.021	8.255
p value		0.000	0.000	0.000
CiteULike – Recall
Mean	0.111	0.105	0.102	0.02
Std.	0.056	0.052	0.055	0.009
t		6.163	3.294	6.112
p value		0.000	0.009	0.000

Test instance	Our approach	HR_Wei approach	LDA-based approach	CF approach
MovieLens 20M – Precison
Mean	0.128	0.118	0.112	0.081
Std.	0.077	0.079	0.069	0.037
t		4.434	5.408	3.635
p value		0.002	0.000	0.005
Movielens 20 M – Recall
Mean	0.439	0.427	0.417	0.273
Std.	0.106	0.108	0.105	0.089
T		4.092	11.027	23.033
p value		0.000	0.000	0.006
CiteULike – Precison
Mean	0.071	0.067	0.059	0.025
Std.	0.034	0.031	0.029	0.021
t		3.608	6.021	8.255
p value		0.000	0.000	0.000
CiteULike – Recall
Mean	0.111	0.105	0.102	0.02
Std.	0.056	0.052	0.055	0.009
t		6.163	3.294	6.112
p value		0.000	0.009	0.000

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