A Comparison of OnLine Science Citation Databases VaclavPetricek, IngemarJ'Cox, HuiHan, IsaacG'Counc

1
A Comparison of On-Line Science Citation
Databases Vaclav Petricek, Ingemar J. Cox,
Hui Han, Isaac G. Councill,C. Lee Giles
S?????s? on-line ep?st?µ?????? ß?se?? ded?µ????
pa?ap?µp??

• Research and Advanced Technology for Digital
  Libraries9th European Conference
• ?a???s?as? ?????µ???? ????? S??ß?a

2
??sa????

• ??µ?s?e? on-line ß?se?? ded?µ???? pa?ap?µp??
  (public citation data bases) .
• ?a?ap?µp?? ?????? ap? t?? ?p?st?µ? t??
  ?????f??????.
• DBLP (DataBase systems and Logic Programming ?
  Digital Bibliography Library Project)
• Michael Ley (1998), 550.000 pa?ap?µp??
  (citations) ?????? ap? pe??p?? 368.000
  s????afe??.
• CiteSeer (Scientific Literature Digital Library)
• Steve Lawrence ?a? C.Lee Giles (1997), 716.797
  pa?ap?µp??.

3
???s?µ?t?ta µ?a? ?.?.

• ???es? ?????? ?a? e?d?se??.
• ????? ??????? ?????? ap? ?p??? p???t?ta?
  pe??e??µ????.
• ???es? ?????? µe ????? a???µ? pa?ap?µp?? (?at?
  s???pe?a ????a p?? ?e?????ta? ?d?a?te?a
  s?µa?t???).
• ???s?ete? p???? ap? ????a.
• ?p? ??a ta pa?ap??? p????pte? ? a???????s? t??
  a?ad?µa????.

4
???p?? ap??t?s?? ??????

• DBLP
• ?ata????s? ap? f??t?t?? e?e???t?? µ? a?t?µata
  (manually).
• ???a?e? pe??e??µ???? pe???d????, p?a?t???
  s??ed????, e?sa???? ded?µ???? pa?ap?µp?? (??
  µ???? s???es?? t?? CD/DVD t?? ACM anthology ??
  ??a s?st?µata ??).
• Ste??te?? e???? ??????? se s??s? µe t?? CiteSeer.
• ????? ?????? t?? a?t??e?µ???? - µetaded?µ??a

• CiteSeer
• ?p?ß??? ?????? ap? ???st?.
• Crawler (p?????µµata ??a t? ?t?s?µ? ß?se??
  ded?µ???? a???t?s? s???e???µ???? ap?te?esµ?t??
  ?? a?t?µata, ?????????? ?st?t?p???)
• ??ß?????af?a ap? se??de? a?a?t???se? µ?s?
  crawler.
• Self-selected on-line survey ? ???st??
  a?t?e??p??ete?ta? ?a? ??e? ?? d?ad??as?e? ???a?
  a?t?µate?.

5
G?a t?? d?e?a???? s?µpe?asµ?t??

• ?p?spas? s?????? ded?µ????
• DBLP 352.024 ????a ap? t?? ??????? pe???d?
  1990-2002.
• CiteSeer 325.046 ????a (µ??? µ?s? crawling) ??a
  t?? ?d?a µe t?? DBLP ??????? pe???d?.
• 1990-2002 ??a??? a???µ?? ?????? ?a?
  a?t??e?µ????? s?µpe??sµata.
• S?????s? t?? s?????? a?t??.

6
S?µpe??sµata 1/4

• ??e?????sa? µ?s? µa??µat???? µ??t????, ??????
  ?e???a p??a??t?t?? p???????µe sta s?µpe??sµata
  ????? ?a a?a??s??µe ta ?????ß??a µa??µat???
  µ??t??a. ? epe????s? t?? µ??t???? ?p???e?
  a?a??t??? st?? e??as?a.

7
(No Transcript)
8
S?µpe??sµata 2/4

• ? a???µ?? ?????? t?? DBLP e??a? d?a????
  a??a??µe??? (1990-2002)
• ??d?s? pe??ss?t???? ?????? ???e ?????.
• ???µat?d?t?s?.
• ?e?t??s? ap?d?t???t?ta?
• ? CiteSeer ?e???? µe µ?a a??d??? p??e?a
  (1990-1997). St? s????e?a ?µ?? pa???e? f?????sa
  p??e?a
• ?e??s? d?at???s?? ?????? ?a? ???????
  a?t??e?µ????.
• ???s???e? s?et??? µe ??t?µata p?e?µat????
  ?d???t?s?a?.
• Dark matter effect s????? p????f???a? p?? de?
  e??a? ??at? st? d?ad??t?? rejection, new
  browser, robots.txt, restriction).
• ???? µe????? e????s?asµ?? ??a t? ???s? t?? web.
• ??ad??as?a ap?st???? ?????? (submission).

9
S?µpe??sµata 3/4

• DBLP ?a? CiteSeer
• ???d??? p??e?a ?a??? a?eßa??e? ? µ?s?? a???µ??
  s????af??? (pe??ss?te?a ????a ap? µe???e? ?µ?de?
  s????af??) a?a ?????.
• CiteSeer
• ?e??ss?te?e? µe???e? se a???µ? ?µ?de? s????af??
  ap? t?? DBLP.
• ??t?a
• ???µat?d?t?s? p??t?µ?s? se s??e??at????
  ??e??e?.
• S??e??as?a e????a ef??t? µ?s? email ?a? web.

10
S?µpe??sµata 4/4

• ?µ?da s????af?? 1-3
• CiteSeer ????te?a ????a se s??s? µe t?? DBLP.
• ????a ap? 1 s????af?a
• s????t?ta t?? CiteSeer 77DBLP.
• ?ata????s? ?????? ?????? ap? ?µ?da s????af??
  p????? at?µ??.
• ????a ?µ?da? s????af?? p????? at?µ?? ß??s???ta?
  se pe??ss?te?e? ?st?se??de? (CiteSeer -
  crawler).
• ?p???e?sµ?? ?????? µe µ???? ?µ?da s????af??.

11
DBLP

• ?p???e?sµ?? ?????? p?? p???????ta? ap? ??a?
  s????af?a ??at?
• ??s???a ???????????ta? ?a? e?d?d??ta? ???a ap?
  ??a? s????af?a.
• ???µat?d?t?s? p??t?µ?s? se ?µad???? e??as?e?.
• ?e?????sµ???? a???µ?? ep?st?µ???? st? ??sµ?.

12
???t??a ap??t?s?? ??????

• ???s? ?e???a? p??a??t?t??
• DBLP ?a??pte? t? 24 ap? ??? t?? ????te???a ????
  ap? t?? ???? t?? ep?st?µ?? t?? p????f??????.
• CiteSeer µe ?p??? t??p? ?a? a? ap??t???ta? ta
  ????a (ape??e?a? ?p?ß??? t?? ?????? ap? t???
  s????afe?? st? ß?s?, e?te µ?sa ap? t?? d?ad??as?a
  crawling) ?ata?????? st? ?d?? ap?t??esµa.

13
??ad??µ?

• Lahererre - e?ast??? e??et??? s????t?s? ?at??????
  ??a µ??t??a pa?ap?µp?? ?ta? ßas??eta? se
  d?ad??as?e? µ??ad?a?a? p?s?t?ta? p???ap?as?asµ??
  ?a? de? e??a? ?at?????a ??a ape?????st? a???µ?
  s????af???.
• Redner - ISI (Institute for Scientific
  Information) ?a? Physical Review Databases -
  p??????e e??s?s?, ? ?p??a ?s??e ??a t?? a???µ?
  t?? pa?ap?µp?? se ????a µe p????? pa?ap?µp??.
• Lehmann - ?ata??µ? pa?ap?µp?? t?? ?????? t??
  ß?s?? SPIRES efa?µ??? e??s?s?? t?? Redner ?a?
  t?? e?ast??? e??et??? s????t?s? t?? Lahererre ?a?
  ap?de??e p?? e??a? ad??at? ? d?????s? µeta?? t??
  d?? µ??t????.

14
S??µat??? ta s?µpe??sµata (1/2)
15
S??µat??? ta s?µpe??sµata (2/2)
16
(No Transcript)
17
(No Transcript)
18
???a??st? p??? ??a t?? p??s??? sa?

• ?e??ss?te?e? p????f???e? sta
• http//citeseer.ist.psu.edu/
• http//www.informatik.uni-trier.de/ley/db/