Curriculum Vitae

Hayri Sever

The Department of Computer Engineering

Hacettepe University

Baglica, Ankara 06530, Turkey

Dept: (90) 312/297 7500 (ext. 149) Work: (90) 312/297 7576

sever@hacettepe.edu.tr

Areas of Current Research Interest:

Knowledge Discovery in Databases, Information Retrieval Models, Topic Detection and Tracking, Information Filtering, and Internet Computing.

Education:

Dissertation Title: Knowledge Structuring for Database Mining and Text Retrieval Using Past Optimal Queries.

Advisor: Dr. Vijay V. Raghavan.

 

Professional Experience:

Recognition and Affiliation:

Publications:

  1. Mert Bal, Oya Kalıpsız, and Hayri Sever. “Modeling the Symptom-Disease Relationship by Using Rough Set and Formal Concept Analysis,”  Appear in Proceedings of World Academy of Science, Engineering and Technology (WASET), Volume 26,  December 2007.
  2. Mehmet R. Tolun, Hayri Sever, and A. Kadir Gorur. "Production and Retrieval of Rough Classes in Multi Relations," IEEE Int. Conf. on Granular Computing (GrC 2007), Silicon Valley USA.
  3. Hayri Sever, Fuat Akal ve Güven Köse. Kavram Tabanlı Bilgi Geri Getirim Yaklaşımı, Bilgi Dünyası, 8(1): 49-75, 2007.
  4. Hayri SEVER, Haşmet GÜRÇAY, Serdar AK. Konumsal Erişim Yöntemleri, Harita Dergisi (http://www.hgk.mil.tr/dergi/dergi.asp), 138: 84-99, 2007.
  5. M. S. Ayhan, H. Sever, H. Gürçay ve  S. Ak. Konumsal Dizinleme Yöntemlerinin Karşilaştirilmasi, TMMOB CBS’07, Trabzon, TR.
  6. Fırat Turan, Hayri Sever  ve Haşmet Gürçay. Web Servisleri Tabanlı Coğrafi Bilgi Sistemleri, TMMOB CBS’07, Trabzon, TR.
  7. H. Sever ve G. Köse, Skor Dağılımlı Üst Arama Modeli, TBV Bilgisayar Bilimleri ve Mühendisliği Dergisi,  1: 1-14, 2007.
  8. H. Sever ve Y. Tonta, Arama Motorları, TBV Bilişim Ansiklopedisi, pp. 95-99, 2006.
  9. H. Sever ve M.Z. Bolat, Bilgi Süzme, TBV Bilişim Ansiklopedisi, pp. 173-176, 2006.
  10. H. Sever ve G. Köse, Üst Arama Motorları, TBV Bilişim Ansiklopedisi, pp. 873-877, 2006.
  11. H. Sever ve B.O. Ozel, Veri Madenciliği, TBV Bilişim Ansiklopedisi, pp. 883-887, 2006.
  12. H. Sever ve M.E. Küçük, Internette Kaynak Keşfi,  TBV Bilişim Ansiklopedisi, pp. 491-494, 2006.
  13. H. Sever, Z. Bolat, V.V. Raghavan. Use of Preference Relation for Text Categorization. Fourth International Conference on Rough Sets and Current Trends in Computing 2004 (RSCTC'2004), Lecture Notes in Artificial Intelligence, Springer-Verlag, Vol. 3066, 708-713, June 2004.
  14. H. Sever and V.V. Raghavan. Meta Patterns: Discovering Rough Classifiers. North American Fuzzy Information Processing Society (S. Dick, L. Kurgan, W. Pedrycz, and M. Reformat, eds), IEEE Proceeding, Vol. 2, 702-706, June 2004.
  15. H. Sever, A. Gorur and M.R. Tolun. Text Categorization with ILA. 18th International 18th International on Computer and Information Sciences (ISCIS'03), Antalya, Turkey, November 3-5, 2003.  Lecture Notes in Computer Science (LNCS), Springer, Vol. 2869, 300-307.  document
  16. H. Sever and Y. Bitirim. The Analysis and Evaluation of Stemming algorithms for Turkish. 10th International Symposium on String Processing and Information Retrieval (SPIRE’03), Manaus, Brazil, October 8-10, 2003. Lecture Notes in Computer Science (LNCS), Springer, 2857: 238-51. document
  17. H. Sever ve Güven Köse (Eylül 2003). Skor Dağılımlı Üst Arama Modeli. TBD 20. Ulusal Bilişim Kurultayı, İstanbul. document
  18. H. Sever ve B. Oğuz. (Ekim 2002). Veri Tabanlarında Bilgi Keşfine Formel Bir Yaklaşım: Kısım 1- Eşleştirme Sorguları ve Algoritmalar. Bilgi Dünyası, 3(2): 173-204. document
  19. H. Sever ve B. Oğuz. (2003). Veri Tabanlarında Bilgi Keşfine Formel Bir Yaklaşım: Kısım 2- Eşleştirme Sorgularının Biçimsel Kavram Analizi ile Modellenmesi. Bilgi Dünyası, 4(1): 15-44. document
  20. H. Sever and M.Z. Bolat. A Text Filtering Method for Digital Libraries. (IATUL’03). The 24th Annual Conference on International Association of Technological University Libraries document in .pdf form. June 2-5, 2003. Ankara, Turkey.
  21. H. Sever and M. Tolun. Comparison of Normalization Techniques for Metasearch. ADVIS'02,  Lecture Notes in Computer Science, Springer Verlag,  Vol. 2457, pp. 133-143, 2002. document in .pdf form.
  22. Y. Bitirim, Y. Tonta, and H. Sever. Information Retrieval Effectiveness of Turkish Search Engines. ADVIS'02,  Lecture Notes in Computer Science, Springer Verlag,  Vol. 2457, pp. 93-103, 2002, document in .pdf form.
  23. Y. Tonta, Y. Bitirim, and H. Sever. Turkce Arama Motorlarinda Performans Degerlendirme, pp. 1-152, Damla Publisher Ltd., 2002 (link to Tonta's Home Page for the soft copy ).
  24. R. Manmatha and H. Sever. A Formal Approach to Score Normalization for Metasearch, Human Language Technology Conference (HLT'02), March 24-27, 2002, San Diego, CA. document in .pdf form.
  25. M.E. Kucuk, B. Olgun, and H. Sever , Application of Metadata Concepts to Discovery of Internet Resources, Lecture Notes in Computer Science (LNCS), Springer Verlag, Vol. 1909, pp. 304-13, 2000. document in .pdf form.
  26. A.H. Alsaffar, J.S. Deogun, H. Sever , Optimal Queries in Information Filtering, Lecture Notes in Artificial Intelligence (LNAI), Springer Verlag, Vol. 1932, pp. 435-43. document in .ps form.
  27. B. Oguz, H. Sever ve M. Tolun, Eşleştirme Sorgularının Modellenmesi, The ninth Turkish Symposium on Artificial Intelligence and Neural Networks (TAINN'00, June 21-23, 2000, Izmir, Turkiye, pp. 381-390. document in .pdf form .
  28. B. Olgun and H. Sever, Internet Kaynak Keşfi: Dublin Core Üstveri Editörü, Bilgi Dünyası, 1(1), April 2000, pp. 56-88. document in .pdf form
  29. A.H. Alsaffar, J.S. Deogun, V.V. Raghavan, H. Sever , Enhancing Concept-based Retrieval Based on Minimal Term Sets, Intelligent Information Systems Journal (JIIS), 14(2/3), March-June 2000, pp. 155-73. document
  30. P. Bollmann-Sdorra, V. V. Raghavan, and H. Sever, Term Preference Weight, Proceedings of 14th International Symposium on Computer and Information Sciences (ISCIS'99), October 18-20, 1999, Izmir, Turkey, pp. 360-369. document
  31. M.R. Tolun, H. Sever , M. Uludag, S.M. Abu-Soud, ILA-2: An Inductive Learning Algorithm for Knowledge Discovery, Cybernetics and Systems: An International Journal, 30(7), pp. 609-628, Oct-Nov. 1999.
  32. S. K. Choubey, J. S. Deogun, V. V. Raghavan, and H. Sever, On Feature Selection and Effective Classifiers, Journal of American Society for Information Science (JASIS), 49(5), May 1998, pp. 423-434. document
  33. V. V. Raghavan, J.S. Deogun, and H. Sever, Data Mining: Trends and Issues, Guest editors' introduction for JASIS' special issue on data mining, 49(5), 1998, pp. 397-402. document
  34. J. S. Deogun, V. V. Raghavan, A. Sarkar, and H. Sever, Data Mining: Trends in Research and Development. Rough Sets and Data Mining: Analysis for imprecise Data. (T. Y. Lin and N. Cercone, Eds.), Kluwer Academic Publishers, pp. 9-45, 1997. document in .pdf
  35. J.S. Deogun, V.V. Raghavan, and H. Sever. Concept Based Retrieval by Minimal Term Sets. Foundations of Intelligent Systems, 11th International Symposium on Methodologies for Intelligent Systems (ISMIS'99). Warsaw, Poland. June 8-11, 1999. Springer Verlag (Eds. Z.W. Ras and A. Skowron). pg. 114-123. document
  36. J.S. Deogun, V.V. Raghavan, and H. Sever, Association Queries and Formal Concept Analysis, The Sixth International Workshop on Rough Sets, Data Mining and Granular Computing (in conjunction with JCIS'98), 23-28 October, Research Triangle Park, NC, USA. document
  37. J.S. Deogun, H. Sever, and V.V. Raghavan, Structural Abstractions of Hypertext Documents for Web-based Retrieval, Proceedings of Ninth International Workshop on Database and Expert Systems Applications, (in conjunction with DEXA'98) -- editor by Roland R. Wagner, IEEE Computer Society (Los Alamitos, California), 26-28 August, 1998, Vienna, Austria, pp. 385-390. document
  38. Mehmet R. Tolun, Hayri Sever, and Mahmut Uludag, "Improved Rule Discovery Performance on Uncertainty", In Research and Development in Knowledge Discovery and Data Mining (eds. X. Wu, R. Kotagiri, and K.B. Korb), Lecture Notes in Artificial Intelligence (Proc. Second Pacific-Asia Conf. PAKDD-98, Melborne, Australia, April 1998), Vol. 1394, pp.310-321.
  39. H. Sever, V.V. Raghavan, and T. D. Johnsten, The State of Rough Sets for Knowledge Discovery in Databases, ICNPAA-98: Second International Conference on Nonlinear Problems in Aviation and Aerospace, Daytona Beach, Florida, USA, Europen Conference Publications (S. Sivasundaram, Ed.), Cambridge, UK, 1998, Vol. 2, pp. 673-680. document
  40. S. K. Choubey, J. S. Deogun, V. V. Raghavan, and H. Sever, A Comparison of Feature Selection Algorithms in the Context of Rough Classifiers, Proceedings of Fifth IEEE International Conference on Fuzzy Systems, vol. 2, New Orleans, LA, pp. 1122-1128, September 1996. document
  41. G. Duran and H. Sever, Turkce Govdeleme Algoritmalarinin Analizi, Annual Conference of TBD'96, Istanbul, Turkey, September 1996, pp. 235-243.
  42. H. Sever, V.V. Raghavan, J.S. Deogun, and S.K. Choubey. A Comparison of Classification Methods. International Conference of Information Sciences -- Rough Set \#38; Computer Science. Vol. 3, pp. 371-374. Raleigh, NC. Mar. 1997. document
  43. V. V. Raghavan and H. Sever, On the Reuse of Past Optimal Queries, Proceedings of 18th ACM International Conference on Research and Development in Information Retrieval (SIGIR'95), Seattle, WA, USA, July 1995, pp. 344-351. document
  44. V. V. Raghavan, H. Sever, and J. S. Deogun, Exploiting Upper Approximations in the Rough Set Model, Proceedings of the First International Conference on Knowledge Discovery and Data Mining (KDD'95), Spansored by AAAI in cooperation with IJCAI, Montreal, Quebec, Canada, August, 1995, pp. 69-74. document
  45. J. S. Deogun, V. V. Raghavan, and H. Sever, Rough Set Based Classification Methods and Extended Decision Tables, Third International Workshop on Rough Sets and Soft Computing, T.Y. Lin and A.M. Wildberger, eds., The Society for Computer Simulation, pp. 302-306, 1995. document
  46. V. V. Raghavan, and H. Sever, The State of Rough Sets for Database Mining Applications, Proceedings of 23rd Computer Science Conference Workshop on Rough Sets and Database Mining, T.Y. Lin ed., pp. 1-11, San Jose, CA, 1995. document
  47. V. V. Raghavan, H. Sever, and J. S. Deogun, A System Architecture for Database Mining Applications, Fuzzy Sets and Knowledge Discovery Workshops in Computing Series(W. P. Ziarko, ed.), Springer-Verlag, pp. 82-89, 1994. document
  48. V. Yalcin, H. Sever, and S. Torun, Turkiye Yuksek Ihtisas Hastanesi Veri Tabani, Proceedings of Tipta Bilgisayar Uygulamalari Simpozyumu, Izmir, Turkey, September, 1987, pp. 147-172.

 

Lectures Being Taught (U and G stand for Undergraduate and Graduate, respectively):

-          Advanced Data Structures and Algorithm Analysis ,  U: Başkent University.

-         Artificial Intelligence, (U,G): Başkent University.

-         Computer Architecture, U: Başkent University.

-         Cryptography, U: Çankaya University, G: Başkent University.

-         Database Management Systems, U: Başkent University, Eastern Mediterranian University, (U,G): University of Nebraska at Lincoln.

-         Formal Languages and Recursive Theory , U: Hacettepe University. Syllabus in .ps form

-         Information Retrieval Systems, (U,G): Başkent University, G: Hacettepe University. G: Middle East Technical University.

-         Information Technology, U: Çankaya University.

-         Introduction to Computer Engineering , U: Hacettepe University. Syllabus in .ps form

-         Introduction to Programming II, U: Başkent University, Eastern Mediterranian University, Hacettepe University.

-         Knowledge Based Systems, G: Middle East Technical University.

-          Operating Systems, (U,G): University of Nebraska at Lincoln, U: Eastern Mediterranian University.

-         Script Languages, U: Başkent University.

-          Software Engineering, U: Başkent University, Hacettepe University.

-          Theory of Database Management Systems, G: Başkent University, Hacettepe University

 

Research Projects and Proposals:

 

Seminars & Talks:

Supervised Thesises