Abstract:

Although no effective methods preference elicitation the user modeling is one of the important research topics in electronic commerce, there are still to model the dynamic preferences of users. In this paper, the general characteristics of user are analyzed and a two-stage case-based incremental preference elicitation approach is proposed. Semiring-based soft constraints are then used to represent various user preferences by considering the user modeling as an imposed process of preference constraints in decision spaces. Moreover, different types of preference constraints and the process of user preference modeling are proposed. By the above-mentioned statements, the flexibly modeling of dynamic preferences in electronic commerce is finally implemented.

Key words: user modeling, soft constraint, preference elicitation, user profile