Ontology-Based User Modeling for E-Commerce System

User modeling, often addressed as user profile and a simple way of capturing his/her preferences, plays key roles in marketing and personalized services in E-commerce. Due to its powerful knowledge representation and inference mechanism, ontology-based user modeling is emerging as a natural choice to represent knowledge about users in E-commerce context. This paper has presented ontology-based user modeling system, and relies on user ontology to provide customized services in the context of E-commerce. A generic framework of implicit and explicit ontology-based user modeling is presented and described using Semantic Web technology, i.e. OWL specification, which can improve the quality of returned information for user´s queries.