Year-on-year growth with the advent of the 188bet sports betting app download，The amount of information in the network is growing exponentially，This brings about the problem of information overload。Recommendation system is one of the most effective ways to solve information overload，Big data recommendation system has gradually become a research hotspot in the information field。

Li Cuiping, Lan Mengwei, etc. 2015-12-28 07:18:48