Now showing items 1-3 of 3

    • The expressive power of temporal relational query languages 

      Tansel, A. U.; Tin, E. (IEEE, 1997)
      We consider the representation of temporal data based on tuple and attribute timestamping. We identify the requirements in modeling temporal data and elaborate on their implications in the expressive power of temporal query ...
    • Metadata-based modeling of information resources on the web 

      Özel, S. A.; Altingövde, S.; Ulusoy, Ö.; Özsoyoǧlu G.; Özsoyoǧlu, Z. M. (Wiley, 2004)
      This paper deals with the problem of modeling Web information resources using expert knowledge and personalized user information for improved Web searching capabilities. We propose a "Web information space" model, which ...
    • A rule-based video database system architecture 

      Dönderler, M. E.; Ulusoy, Ö.; Güdükbay U. (Elsevier, 2002)
      We propose a novel architecture for a video database system incorporating both spatio-temporal and semantic (keyword, event/activity and category-based) query facilities. The originality of our approach stems from the fact ...