Dealing with Pure New User Cold-Start Problem in Recommendation System Based on Linked Open Data and Social Network Features

Table 10

F1 measures and the precision values of feature performance.

Top N	Precision	F1 metric	Precision	F1 metric	Precision	F1 metric	Precision	F1 metric
	LOD	LOD	LOD + D	LOD + D	LOD + SN + D	LOD + SN + D	SN	SN
Top-5	0.68	0.76	0.4	0.571	0.4	0.4	0.4	0.4
Top-10	0.68	0.8	0.5	0.5	0.4	0.16	0.4	0.45
Top-15	0.77	0.82	0.33	0.47	0.6	0.48	0.47	0.47
Top-20	0.73	0.84	0.4	0.56	0.55	0.43	0.6	0.6
Top-25	0.85	0.86	0.32	0.6	0.48	0.48	0.6	0.6
Top-30	0.8	0.88	0.67	0.76	0.57	0.33	0.66	0.66
Top-35	0.97	0.97	0.56	0.7	0.63	0.58	0.6	0.75