Extracting User Interest Center Based on a Semantic User Profile

Abstract—The fundamental purpose of a personalized information retrieval system is to provide relevant results to the specific need of the user. The selection of interesting documents to a user is done on the basis of his area of interest, inferred from the information about the user or his user profile. Thus the calculation of the interest center is one of the essential elements for a relevant research. On one hand, information retrieval systems converge to a semantic representation of user profiles. On the other hand, they do not take into account the semantic links between the concepts (meaning of the word) when defining the center of interest.In this paper we use a graphical representation of the user profile based on ontology. Thus we were able to use the power of mathematical calculations of graphs to deduce the interest’s centers of the user