Novel Recommendation System for Tourist Spots Based on Hierarchical Sampling Statistics and SVD++

Table 5

Case study results.

	Ground-truth	SVD++	Co-Clustering	KNN	Our_Mix
User id: 9	Jiuhua Mountain	Sri Lanka	Gulangyu islet	Phuket	Jiuhua Mountain √
	Huanglong	Jiuhua Mountain √	Kyoto	Nara	Fuji
	Bali	Lijiang √	Huanglong √	Bali √	Bali √
	Lijiang	Shangri-la	Sanya	Lijiang √	Cairo
		Nara	Guilin	Wuhan	Lijiang √
		Hong Kong	Nusa Lembongan	Indonesia	Kyoto
User id: 53	Terra Cotta Warriors	Wutai Mountain	Bali	Sanya	Nara √
	Nara	Kyoto √	Wuyuan	Lijiang	Kyoto √
	Kyoto	Cairo	Shangri-la √	Tokyo	Cairo
		Disney	Jiuzhangou	Terra Cotta Warriors √	Sri Lanka
		Nara √	Munich	Haikou	Terra Cotta Warriors √
		Phuket	Dali	Disney	Phuket