Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The A&A Experience With Impact Factors   There is a widespread impression that the scientific journal "Astronomy &
Astrophysics" (A&A) has a smaller impact, as measured by citations to articles,
than some of the other major astronomy journals. This impression was apparently
supported - and probably created - by the Journal Citation Report (JCR), which
is prepared annually by the Institute of Scientific Information (ISI) Web of
Knowledge. The published poor impact factor of A&A was in fact wrong and was
due to a serious flaw in the method used by ISI Web of Knowledge to determine
it. The resulting damage inflicted upon A&A by the JCR is incalculable.

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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin