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ÁíÍ⣬ÉÏÎÄÌáµ½µÄ¹ØÓÚ Impact Factor£¬Page Rank ÒÔ¼°Ëùν Y factor µÄÑо¿½á¹ûÔÚÕâÆªÎÄÕÂÖУº
Impact Factor Page Rankled

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Those of us who have used Google to search for items
of interest cannot help but be amazed at its speed and
accuracy. Somehow, it is able to list items of interest in
an order ranging from the most important to the least
important, and to do so for hundreds of thousands of
entries! The brilliance of Google lies a good deal in its
search algorithm, PageRank, named after one of its originators,
Larry Page. PageRank is based on the Perron-
Frobenius Theorem (Google lists 96,000 entries for this
theorem), which is used extensively in algebraic graph
theory, to establish the importance of a specifi c site on
the Web, thus ¡°bringing order to the Web.¡± Since scholarly
journals are now almost exclusively published on the
Web, PageRank provides a potentially unique algorithm
to evaluate both the relative importance of journals and
the individual papers published in these journals. In this
article, we review the recent use of PageRank to evaluate
5,709 scholarly journals that are currently published online
and compare the results to those found using the currently
popular method for ranking journals, Impact Factor.
The Journal of Biological Chemistry (JBC) was ranked fi rst
by PageRank but 180th by Impact Factor. The possible
reason for this dramatic difference in journal ranking, and
its potential signifi cance in ranking scholarly journals published
on the Web, is the subject of this article.
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