Table 3.

F1 value table of prediction results of complex teaching resources.

Recommendation algorithm	Test set ratio
	70%	50%	30%	10%
User-based CF	0.483	0.615	0.593	0.606
DINA	0.693	0.653	0.706	0.741
PMF-CD	0.687	0.715	0.721	0.774
QueRec	0.759	0.789	0.797	0.832
CUPMF	0.791	0.787	0.823	0.851