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Identifier uch.csd.msc//2005stratakis
Title Τυπικό μοντέλο αναπαράστασης προτιμήσεων χρηστών για τη διάταξη συλλογών αντικειμένων
Alternative Title Formal model for the representation of user preferences regarding objects collection orderings
Creator Stratakis, Miltiadis
Abstract User preferences constitute one of the most significant factors on current applications via the Web in the scope of personalization, raising new challenges in the information retrieval. Moreover, they comprise a promising solution for the controlled user query relaxation, thereby coping with the problem of information overloading, which affects many of the Web based applications. In the recent years, a lot of research effort has been made for the representation of user preferences in the software environment, which is distinguished in two categories: (a) The qualitative approaches, where preferences are considered as binary relations on sets, and (b) The quantitative approaches, where preferences are implicitly defined through corresponding scoring functions. However, none of the above approaches can represent user preferences in a generic way and, additionally to describe adequately the complex preference expressions that are stated in daily life. This thesis proposes a formal and generic model for representing user preferences regarding object collection orderings, where the attributes that describe the available objects are encountered as partial functions. This model is independent of the specific data models that represent the object collections. Moreover, it provides a minimal set of concepts and preference constructors for the ordering of the available objects. The user preferences in our model are defined as partial orders, from which we construct total orders of the objects with the use of appropriate equivalence classes. Finally, the construction of partial orders through stated user preferences may take place either in the level of data, as well as in the level of attributes.
Issue date 2005-07-01
Date available 2005-07-19
Collection   School/Department--School of Sciences and Engineering--Department of Computer Science--Post-graduate theses
  Type of Work--Post-graduate theses
Permanent Link https://elocus.lib.uoc.gr//dlib/f/1/2/metadata-dlib-2005stratakis.tkl Bookmark and Share
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