Academy & Industry Research Collaboration Center
Preference querying technology is a very important issue in a variety of applications ranging from ecommerce to personalized search engines. Most of recent research papers have been dedicated to this topic in the artificial intelligence and database fields. Several formalisms allowing preference reasoning and specification have been proposed in the Artificial Intelligence domain. On the other hand, in the database field the interest has been focused mainly in extending standard Structured Query Language (SQL) and also eXtensible Markup Language (XML) with preference facilities in order to provide personalized query answering.