Abstract: Aiming to meet the personalized services demand when user query the information of literature in storage by digital library, a user’s interest model of university’s digital library was built with the statistical method explicitly of user feedbacking. It analysed the users' inquiry request and the record of clicking and browsing in the server of digital library of university, excavated the related between the record of user’s inquiring and clicking with user’s interest, realized the renewal of user’s interest model based on user’s historical behaviors about browsing and clicking. At the same time, through calculating the influence factor of user's interest model to the inquiring result, it have realized the optimizing sort of digital library retrieve results based on user’s interest model.

Key words: Users' interest model