[Retracted] Design and Implementation of a Machine Learning-Based English Intelligent Test System

Table 3

Comparison of the results of the four algorithms.

Dataset	Algorithm name	Recall@20	ndcg@20
Gowalla	BPRMF	0.1234	0.1475
	NCF	0.1324	0.1992
	NGCF	0.1427	0.2147
	NGCF-Att	0.1424	0.2213
Amazon-book	BPRMF	0.0234	0.0257
	NCF	0.0541	0.5331
	NGCF	0.0321	0.0547
	NGCF-Att	0.0257	0.0654