关键词: 协同过滤, 冷启动, 稀疏性, 扩展性

Abstract: Recommended technology is widely applied in various fields, and the successful application of the collaborative filtering recommendation algorithm is especially significant. This paper mainly introduces the basic concept and principle of the collaborative filtering recommendation algorithm, including such aspects: algorithm work flow, recommends process as well as the experiment assessment. The collaborative filtering technique faces up to some problem, although it has achieved great success, because of its algorithm features. The paper analyzes these problems and proposes the corresponding solution of collaborative filtering recommendation algorithm, and finally puts forward the new research hotspots of the collaborative filtering recommendation algorithm.

Key words: collaborative filtering, cold-start, sparsity, scalability