Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparing the impact of subfields in scientific journals   The impact factor has been extensively used in the last years to assess
journals visibility and prestige. While the impact factor is useful to compare
journals, the specificities of subfields visibility in journals are overlooked
whenever visibility is measured only at the journal level. In this paper, we
analyze the subfields visibility in a subset of over 450,000 Physics papers. We
show that the visibility of subfields is not regular in the considered dataset.
In particular years, the variability in subfields impact factor in a journal
reached 75% of the average subfields impact factor. We also found that the
difference of subfields visibility in the same journal can be even higher than
the difference of visibility between different journals. Our results show that
subfields impact is an important factor accounting for journals visibility.

24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn