Now showing items 21-36 of 36

    • Incremental materialization of object-oriented views 

      Alhajj, R.; Elnagar, A. (Elsevier, 1999)
      We present an approach to handle incremental materialization of object-oriented views. Queries that define views are implemented as methods that are invoked to compute corresponding views. To avoid computation from scratch ...
    • Large-scale cluster-based retrieval experiments on Turkish texts 

      Altıngövde, İsmail Şengör; Özcan, Rıfat; Öcalan Hüseyin C.; Can, Fazlı; Ulusoy, Özgür (ACM, 2007)
      We present cluster-based retrieval (CBR) experiments on the largest available Turkish document collection. Our experiments evaluate retrieval effectiveness and efficiency on both an automatically generated clustering ...
    • Natural language querying for video databases 

      Erozel, G.; Cicekli, N. K.; Cicekli, I. (Elsevier Inc., 2008-06-15)
      The video databases have become popular in various areas due to the recent advances in technology. Video archive systems need user-friendly interfaces to retrieve video frames. In this paper, a user interface based on ...
    • Object-oriented query language facilitating construction of new objects 

      Alhajj, R.; Arkun, M. E. (Elsevier, 1993)
      In object-oriented database systems, messages can be used to manipulate the database; however, a query language is still a required component of any kind of database system. In the paper, we describe a query language for ...
    • Osmanlı arşivleri içerik-bazlı sorgulama (İBS) sistemi 

      Altıngövde, İsmail Şengör; Şaykol, Ediz; Ulusoy, Özgür; Güdükbay, Uğur; Çetin, A. Enis; Göçmen, M. (2006-04)
      We propose a content-based retrieval (CBR) system for digital Ottoman archive documents. In this system, the symbols extracted from the documents are matched with the most similar one in the symbol library, which is created ...
    • Processing real-time transactions in a replicated database system 

      Ulusoy, Özgür (Springer/Kluwer Academic Publishers, 1994)
      A database system supporting a real-time application has to provide real-time information to the executing transactions. Each real-time transaction is associated with a timing constraint, typically in the form of a deadline. ...
    • Query expansion with terms selected using lexical cohesion analysis of documents 

      Vechtomova, O.; Karamuftuoglu, M. (Elsevier Ltd, 2007-07)
      We present new methods of query expansion using terms that form lexical cohesive links between the contexts of distinct query terms in documents (i.e., words surrounding the query terms in text). The link-forming terms ...
    • Query model for object-oriented databases 

      Alhajj, Reda; Arkun, M. Erol (IEEE, 1993-04)
      A query language should be a part of any database system. While the relational model has a well defined underlying query model, the object-oriented database systems have been criticized for not having such a query model. ...
    • Querying web metadata: Native score management and text support in databases 

      Özsoyoǧlu, G.; Altingövde, I. S.; Al-Hamdani, A.; Özel, S. A.; Ulusoy, Özgür; Özsoyoǧlu, Z. M. (Association for Computing Machinery, 2004)
      In this article, we discuss the issues involved in adding a native score management system to object-relational databases, to be used in querying Web metadata (that describes the semantic content of Web resources). The Web ...
    • Reusability and schema evolution in object - oriented query models 

      Polat, F.; Alhajj, R. (ASME, New York, NY, United States, 1996)
      In this paper, we have benefited from having an object algebra maintaining closure that makes it possible to have the output from a query persistent in the hierarchy. Based on this, it is possible to maximize reusability ...
    • Searching for complex human activities with no visual examples 

      Ikizler, N.; Forsyth, D.A. (2008)
      We describe a method of representing human activities that allows a collection of motions to be queried without examples, using a simple and effective query language. Our approach is based on units of activity at segments ...
    • Searching video for complex activities with finite state models 

      İkizler, Nazlı; Forsyth, D. (IEEE, 2007-06)
      We describe a method of representing human activities that allows a collection of motions to be queried without examples, using a simple and effective query language. Our approach is based on units of activity at segments ...
    • Static index pruning in web search engines: combining term and document popularities with query views 

      Altingovde, I. S.; Ozcan, R.; Ulusoy, O. (Association for Computing Machinery, 2012)
      Static index pruning techniques permanently remove a presumably redundant part of an inverted file, to reduce the file size and query processing time. These techniques differ in deciding which parts of an index can be ...
    • The systems biology graphical notation 

      Le Novère, N.; Hucka, M.; Mi, H.; Moodie, S.; Schreiber, F.; Sorokin, A.; Demir, Emek; Wegner, K.; Aladjem, M. I.; Wimalaratne, S. M.; Bergman, F. T.; Gauges, R.; Ghazal, P.; Kawaji, H.; Li, L.; Matsuoka, Y.; Villéger, A.; Boyd, S. E.; Calzone, L.; Courtot, M.; Doğrusöz, Uğur; Freeman, T. C.; Funahashi, A.; Ghosh, S.; Jouraku, A.; Kim, S.; Kolpakov, F.; Luna, A.; Sahle, S.; Schmidt, E.; Watterson, S.; Wu, G.; Goryanin, I.; Kell, D. B.; Sander, C.; Sauro, H.; Snoep, J. L.; Kohn, K.; Kitano, H. (Nature Publishing Group, 2009-08)
      Circuit diagrams and Unified Modeling Language diagrams are just two examples of standard visual languages that help accelerate work by promoting regularity, removing ambiguity and enabling software tool support for ...
    • Time-by-example query language for historical databases 

      Tansel, A. U.; Arkun, M. E.; Ozsoyoglu, G. (IEEE, 1989)
      Time-by-Example (TBE) is a user-friendly query language designed specifically for historical relational databases. It follows the graphical structure and the example query concept of QBE, and employs the hierarchical ...
    • Topic-Centric Querying of Web Information Resourcest 

      Altıngövde, İsmail Şengör; Özel, Selma A.; Ulusoy, Özgür; Özsoyoğlu G.; Özsoyoğlu, Z.M. (Springer, Berlin, Heidelberg, 2001)
      This paper deals with the problem of modeling web information resources using expert knowledge and personalized user information, and querying them in terms of topics and topic relationships. We propose a model for web ...