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

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Title: 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????.