Recommendation Based on Trust Diffusion Model

Table 1

Statistical information about the three real datasets.

Datasets	Epinions	Flixster	Douban
Statistics	2,100 users	1,100 users	3.160 users
	3,648 articles	2,913 movies	6,529 movies
	6,408 article ratings	8,127 movie ratings	12,963 movie ratings
	5,392 relations statements	3,714 relation statements	7,152 relation statements
Data types	users → articles	users → movies	users → movies
	users → users	users → users	users → users
Rating scale	1, 2, 3, 4, 5	0.5,1,1.5,…,5	1, 2, 3, 4, 5
Trust between users	1	1	1