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

Table 3

nDCG and precision on CNKI dataset when n is 20.

Method	nDCG			Precision
	p = 20%	p = 40%	p = 60%	p = 20%	p = 40%	p = 60%
Literature [23]	0.5176	0.5162	0.5174	0.2433	0.2402	0.2435
Literature [24]	0.4995	0.5063	0.5158	0.1922	0.2056	0.2143
Literature [25]	0.5903	0.6202	0.6323	0.3176	0.3542	0.3685
Literature [26]	0.5301	0.5878	0.5897	0.2513	0.3206	0.3277
Proposed	0.7308	0.7305	0.7417	0.4933	0.4905	0.5067