Comparing journal impact factors across subject fields?

[Loet Leydesdorff]

>and submit this matrix to hierarchical clustering along the cited
dimension. This would provide you with a dendogram as a representation of
the hierarchy in the data.

ps. The reference is:

M. P. Carpenter and F. Narin (1973). Clustering of Scientific Journals,
_JASIS_ 24, 425-436.

You can find a discussion from the perspective of using entropy statistics
in my paper in _Social Networks_ 13 (1991) 301-345.

With kind regards,


Loet

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Loet Leydesdorff
Amsterdam School of Communications Research (ASCoR)
Kloveniersburgwal 48, 1012 CX  Amsterdam, The Netherlands
Tel.: +31-20-525 6598; fax: +31-20-525 3681
loet at leydesdorff.net ; http://www.leydesdorff.net
http://www.upublish.com/books/leydesdorff.htm