Egghe, L. Rousseau, R. "A proposal to define a core of a scientific subject: A definition using concentration and fuzzy sets" SCIENTOMETRICS 54(1):51-62, April 2002

[Eugene Garfield]

Leo Egghe : leo.egghe at luc.ac.be

AU Egghe, L
   Rousseau, R
TI A proposal to define a core of a scientific subject: A
   definition using concentration and fuzzy sets
SO SCIENTOMETRICS
LA English
DT Article
NR 47
SN 0138-9130
PU KLUWER ACADEMIC PUBL
C1 Limburgs Univ Ctr, Univ Campus, B-3590 Diepenbeek, Belgium
   Limburgs Univ Ctr, B-3590 Diepenbeek, Belgium
   UIA, IBW, Wilrijk, Belgium
   KHBO, Ind Sci & Technol, Oostende, Belgium
ID LOTKAS LAW; INFORMATION-SCIENCE; JOURNALS; BRADFORD; GROWTH
AB Determining the core of a field's literature, i.e. its 'most
   important' sources, has been and still is an important problem
   in bibliometrics. In this article an exact definition of a core
   of a bibliography or a conglomerate is presented. The main
   ingredients for this definition are: fuzzy set theory, Lorenz
   curves and concentration measures. If one prefers a strict
   delineation, the fuzzy core can easily be defuzzified. The
   method we propose does not depend on the subjective notion of
   'importance'. It is, moreover, completely reproducible. The
   method and the resulting core is also independent of the
   mathematical function (Lotka, Zipf, Bradford, etc.) that may be
   used to describe the relation between the set of sources and
   that of items.
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TC 0
BP 51
EP 62
PG 12
JI Scientometrics
PY 2002
PD APR
VL 54
IS 1
GA 557HJ
PI DORDRECHT
RP Egghe L
   Limburgs Univ Ctr, Univ Campus, B-3590 Diepenbeek, Belgium
J9 SCIENTOMETRICS
PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
UT ISI:000175902800003
ER