Research on Lineal Gradual Forgetting Collaborative Filtering Algorithm
Xianbin Cao · Jisuanji gongcheng · 2007
Collaborative filtering (CF)is the most successful recommended system to date, but traditional CF algorithm does not consider the problem of drifting users’ interests which often results in poor recommendation when users’ interests are changed. This paper develops a lineal gradual forgetting CF algorithm inspired by the forgetting law of psychology and it diminishes the importance of each rate with time. The experiment using MovieLens dataset shows that the new algorithm is more accurate than traditional CF algorithm.