Research on Intelligent Campus and Visual Teaching System Based on Internet of Things

Table 2

nDCG and precision on CNKI dataset when n is 6.

Method	nDCG			Precision
	p = 20%	p = 40%	p = 60%	p = 20%	p = 40%	p = 60%
Literature [23]	0.6951	0.6863	0.6811	0.4145	0.4003	0.3945
Literature [24]	0.7172	0.7186	0.7282	0.4273	0.4291	0.4464
Literature [25]	0.7755	0.7958	0.7985	0.5373	0.5696	0.5757
Literature [26]	0.7326	0.7794	0.7295	0.4607	0.5431	0.4593
Proposed	0.8678	0.8726	0.8705	0.7015	0.7147	0.7087