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Estonian, Finnish and Latvian Computer Scientists: Citations
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Estonian/Latvian/Finnish Computer Scientists

Citation indices of Estonian/Latvian/Finnish computer scientists

Next follows some partial study of the influence of Estonian, Finnish and Latvian computer scientists in terms of how much they have been cited. It started off as a table for Estonians only, to which I added Latvians (since I know many Latvians personally, and wanted to get some comparative material). Later, when I moved to Finland, I also decided to add Finns.

I would suggest not to take the numbers very seriously. Namely, the next numbers are fetched from ResearchIndex, where the query was restricted to the author field. RI, while very useful, is still far from being complete. Many citations are missing (since the citing papers are not online, or the RI has not found them), and therefore, just counting the ones that are present in RI might give a very wrong idea about the number of citations in general. For example, you can most probably increase your citation count by submitting to RI papers that cite your papers. ;-)

Disclaimer: I do not have any connections with ResearchIndex. All data is given on ``as is'' basis.

For final comparison, according to the CIA World Factbook, the number of population in Estonia, Finland and Latvia is 1.43, 5.17 and 2.40 millions, resp. Note that I have considered a person x to be Estonian/Finnish/Latvian, if (s)he is either born in the corresponding country, or has the corresponding nationality, or has been working in this country for a considerable period of time. (So, Grigori Mints is considered to be Estonian, Hartmanis is considered to be Latvian and Rissanen is considered to be Finnish. In particular, I have added myself to both Finnish and Estonian tables.)

See these links for detailed information about every computer scientist:

For comparison, I also maintain pages of a few selected (top) universities: HUT, University of Saarland and Princeton (recent citations + full list; not uptodate).

Last updated is from 02.04.05. The previous update was in October 2004.

New publications

Non-selfcitations (all three countries):
  1. 300() Tuomas Sandholm, CMU
  2. 87() Aristides Gionis, HIIT
  3. 53() Heikki Mannila, HUT.CIS
  4. 51() Helger Lipmaa, Cybernetica AS
  5. 47() N. Asokan, Nokia
  6. 47() Ilkka Niemelä, HUT.TCS
  7. 38() Andris Ambainis, Waterloo
  8. 31() Tommi Jaakkola, MIT
  9. 29() Peeter Laud, U of Tartu
  10. 26() Pekka Nikander, Ericsson
  11. 25() Ahto Buldas, Cybernetica AS
  12. 15() Hannu Toivonen, Helsinki U
  13. 11() Jan Willemson, Playtech
  14. 9() Aapo Hyvärinen, U Helsinki
  15. 8() Juha Karhunen, HUT.CIS
  16. 7() Alvis Brazma, EMBL
  17. 7() Edith Elkind, UCLA
  18. 6() Tuomas Aura, Microsoft
  19. 6() Kaisa Nyberg, HUT.TCS
  20. 5() Margus Veanes, Microsoft
  21. 4() Patrik Simons, Nettide
  22. 4() Jaak Vilo, EGeen Inc.
  23. 4() Esko Ukkonen, Helsinki U
  24. 4() Samuel Kaski, U Helsinki
  25. 3() Jorma Virtamo, HUT
  26. 2() Erkki Oja, HUT.CIS
  27. 2() Teuvo Kohonen, HUT.CIS
  28. 1() Jussi Rintanen, Freiburg
  29. 1() Tarmo Uustalu, IOC
  30. 1() Jorma Tarhio, HUT.CS
New citations (2002+)

If only citations to new papers (published ≥ 2002) are counted, we get the order, given in the table right.

(New)Short interlude: scholar.google.com

Google now has it's one research paper search, with access to commercial provider's databases. It also gives the number of cites per paper, but there does not seem to be a nice way of summarising it. Out of curiousity, I made the next searches on 19.04.05 (what I give is the number of documents that is returned by google. This means almost nothing. Probably):

1050 Teuvo Kohonen, 829 Heikki Mannila, 459 Tuomas Sandholm, 243 Ilkka Niemelä, 227 Andris Ambainis, 207 Pekka Nikander, 177 Pekka Orponen, 174 Aapo Hyvärinen, 163 Kaisa Nyberg, 153 Tuomas Aura, 142 Helger Lipmaa, 111 Tarmo Uustalu, 107 Margus Veanes, 102 Aristides Gionis, 98 N. Asokan, 98 Tanel Tammet, 75 Jaak Vilo, 60 Peeter Laud, 61 Ahto Buldas, 51 Jan Willemson, 17 Edith Elkind, 16 Juris Smotrovs.

Well-cited recent papers, theses and books

  1. 97 Aapo Hyvärinen, Juha Karhunen, and Erkki Oja. Independent Component Analysis. J. Wiley, New York, 2001.
  2. 58 P. Simons. Extending and implementing the stable model semantics. Research Report 58, Helsinki University of Technology, Helsinki, Finland, 2000.
  3. 46 T. Sandholm, S. Suri, A. Gilpin, and Levine D. Cabob: A fast optimal algorithm for combinatorial auctions. In IJCAI, 2001.
  4. 29 A. Buldas, P. Laud and H. Lipmaa. Accountable Certificate Management using Undeniable Attestations. 7th ACM Conference on Computer and Communication Security, Athens, Greece, November 2000.
  5. 27 Sandholm, T. "eMediator: A Next Generation Electronic Commerce Server". International Conference on Autonomous Agents (AGENTS), Barcelona, Spain, June 3-8,2000 to appear.
  6. 27 T. Sandholm and S. Suri, Improved algorithms for optimal winner determination in combinatorial auctions and generalizations, in Proceedings of the 18th National Conference on Artificial Intelligence, 2000, pp. 90--97.
  7. 26 K.Aoki and H. Lipmaa. Fast implementations of the AES candidates. Proceedings of 3rd AES conference, New York, pages 106-120, April 2000.
  8. 23 Ilkka Niemelä and Patrik Simons. Extending the smodels system with cardinality and weight constraints. In Jack Minker, editor, Logic-Based Articial Intelligence, pages 491-521. Kluwer, 2000.
  9. 21 V. Conitzer and T. Sandholm. Complexity results about Nash equilibria. Technical Report CMU-CS-02-135, School of Computer Science, Carnegie-Mellon University, May 2002.
  10. 21 H. Lipmaa, P. Rogaway, and D. Wagner. CTR-mode encryption. In First NIST Workshop on Modes of Operation, 2000.

Progress

This table is for Estonians only: the number shows how many times their total (ns)citation count has grown up from 31.12.2001. Included are only people with ≥15 (ns)citations at the current moment. The intermediate values in -> correspond to the end of year 2002, and to the end of the year 2003. (The latter is equal to the state of the citeseer databas in 01.09.03 - 30.06.04.) 

Percentual change:				
         Peeter Laud   384.6%  [  48.4% per year] (  26->  43->  53-> 111-> 126,+ 100)
       Jan Willemson   376.9%  [  47.8% per year] (  13->  25->  30->  56->  62,+  49)
       Helger Lipmaa   289.8%  [  40.5% per year] (  59->  94-> 129-> 212-> 230,+ 171)
         Ahto Buldas   263.6%  [  38.1% per year] (  33->  51->  59-> 114-> 120,+  87)
          Kalle Karu   159.4%  [  26.9% per year] (  32->  45->  53->  75->  83,+  51)
          Varmo Vene   157.1%  [  26.6% per year] (  14->  18->  19->  36->  36,+  22)
       Margus Veanes   127.7%  [  22.8% per year] (  47->  80->  88-> 106-> 107,+  60)
           Jaak Vilo   119.6%  [  21.7% per year] (  46->  69->  80-> 101-> 101,+  55)
          Kalev Kask    83.3%  [  16.4% per year] (  24->  28->  30->  44->  44,+  20)
        Raimund Ubar    75.0%  [  15.0% per year] (  12->  15->  20->  21->  21,+   9)
       Tarmo Uustalu    71.4%  [  14.4% per year] (  42->  47->  50->  72->  72,+  30)
     Mihhail Matskin    64.3%  [  13.2% per year] (  14->  17->  18->  23->  23,+   9)
     Peeter Ellervee    61.9%  [  12.8% per year] (  21->  21->  25->  33->  34,+  13)
          Erich Mikk    51.1%  [  10.9% per year] (  45->  58->  60->  68->  68,+  23)
       Grigori Mints    43.1%  [   9.4% per year] ( 239-> 265-> 278-> 342-> 342,+ 103)
        Tanel Tammet    32.5%  [   7.3% per year] ( 163-> 176-> 187-> 216-> 216,+  53)
         Mati Pentus    29.5%  [   6.7% per year] (  44->  45->  48->  57->  57,+  13)
           Enn Tõugu    12.1%  [   2.9% per year] (  99-> 109-> 110-> 111-> 111,+  12)
       George Rebane     8.3%  [   2.0% per year] (  24->  26->  26->  26->  26,+   2)

Absolute growth:

+ 171 (  59->  94-> 129-> 212-> 230) 	       Helger Lipmaa
+ 103 ( 239-> 265-> 278-> 342-> 342) 	       Grigori Mints
+ 100 (  26->  43->  53-> 111-> 126) 	         Peeter Laud
+  87 (  33->  51->  59-> 114-> 120) 	         Ahto Buldas
+  60 (  47->  80->  88-> 106-> 107) 	       Margus Veanes
+  55 (  46->  69->  80-> 101-> 101) 	           Jaak Vilo
+  53 ( 163-> 176-> 187-> 216-> 216) 	        Tanel Tammet
+  51 (  32->  45->  53->  75->  83) 	          Kalle Karu
+  49 (  13->  25->  30->  56->  62) 	       Jan Willemson
+  30 (  42->  47->  50->  72->  72) 	       Tarmo Uustalu
+  23 (  45->  58->  60->  68->  68) 	          Erich Mikk
+  22 (  14->  18->  19->  36->  36) 	          Varmo Vene
+  20 (  24->  28->  30->  44->  44) 	          Kalev Kask
+  13 (  44->  45->  48->  57->  57) 	         Mati Pentus
+  13 (  21->  21->  25->  33->  34) 	     Peeter Ellervee
+  12 (  99-> 109-> 110-> 111-> 111) 	           Enn Tõugu

To compare, some of the Finnish people (this list is definitely incomplete): 

      Pekka Nikander   254.8%  [  37.2% per year] (  42->  63->  76-> 146-> 149,+ 107)
           N. Asokan   170.1%  [  28.2% per year] ( 187-> 267-> 350-> 505-> 505,+ 318)
     Tuomas Sandholm   157.6%  [  26.7% per year] ( 425-> 568-> 732->1092->1095,+ 670)
      Aapo Hyvärinen   114.8%  [  21.1% per year] ( 391-> 479-> 588-> 840-> 840,+ 449)
      Jussi Rintanen   113.3%  [  20.8% per year] (  83-> 110-> 131-> 177-> 177,+  94)
        Samuel Kaski    99.5%  [  18.9% per year] ( 218-> 291-> 346-> 435-> 435,+ 217)
       Patrik Simons    88.7%  [  17.2% per year] ( 293-> 377-> 405-> 553-> 553,+ 260)
       Ilkka Niemelä    78.6%  [  15.6% per year] ( 454-> 554-> 613-> 811-> 811,+ 357)
      Hannu Toivonen    77.2%  [  15.4% per year] ( 931->1170->1300->1654->1650,+ 719)
      Tommi Jaakkola    65.6%  [  13.4% per year] ( 555-> 683-> 749-> 906-> 919,+ 364)
           Erkki Oja    48.6%  [  10.4% per year] ( 995->1162->1247->1534->1479,+ 484)
       Antti Valmari    37.6%  [   8.3% per year] ( 527-> 609-> 630-> 711-> 725,+ 198)
      Heikki Mannila    19.0%  [   4.5% per year] (1355->1594->1594->2382->1613,+ 258)

Influencial Papers

Only Estonia. Also, Estonian Cryptographers.

Old Backups

Certainly it is interesting to know how different statistics (like citation indeces) evolve. Currently I have only produced a backup for 2001.