ABS: Thelwall Web impact factors and search engine coverage.

[Gretchen Whitney]

Notes: Author's email address: cm1993 at wlv.ac.uk

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FN ISI Export Format
VR 1.0
PT J
AU Thelwall, M
TI Web impact factors and search engine coverage
SO JOURNAL OF DOCUMENTATION
NR 10
C1 Wolverhampton Univ, Sch Comp & Informat Technol, Wulfruna St,
   Wolverhampton WV1 1SB, England.
   Wolverhampton Univ, Sch Comp & Informat Technol, Wolverhampton WV1 1SB,
England.
ID WORLD-WIDE-WEB
AB Search engines index only a proportion of the web and this
   proportion is not determined randomly but by following
   algorithms that take into account the properties that impact
   factors measure. A survey was conducted in order to test the
   coverage of search engines and to decide whether their partial
   coverage is indeed an obstacle to using them to calculate web
   impact factors. The results indicate that search engine
   coverage, even of large national domains is extremely uneven
   and would be likely to lead to misleading calculations.
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BP 185
EP 189
PG 5
JI J. Doc.
PY 2000
PD MAR
VL 56
IS 2
GA 292PN
RP Thelwall M
   Wolverhampton Univ, Sch Comp & Informat Technol, Wulfruna St,
Wolverhampton WV1 1SB, England.
J9 J DOC
UT ISI:000085804400004
ER


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