Retracted: E-Government Research Based on Improve User Interest Model

Diffusion algorithm is used to calculate the similarity between users in collaborative filtering algorithm. Binary relation and ternary relation are taken into account. Firstly, joint item-tag recommendation results are acquired from item recommendation and tag recommendation. And then, the new user model which is represented by joint item-tag matrix is used to get the joint recommendation. Finally, the two results are combined. The experiment results show that this improved user interest model has better performance.