Table 2.

F1 value table of prediction results of simple teaching resources.

Recommendation algorithm	Test set ratio
	70%	50%	30%	10%
User-based CF	0.501	0.506	0.532	0.479
DINA	0.539	0.606	0.617	0.699
PMF-CD	0.695	0.632	0.639	0.701
QueRec	0.690	0.701	0.737	0.768
CUPMF	0.722	0.753	0.781	0.719