Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Which cities' paper output and citation impact are above expectation in
  information science? Some improvements of our previous mapping approaches   Bornmann and Leydesdorff (in press) proposed methods based on Web-of-Science
data to identify field-specific excellence in cities where highly-cited papers
were published more frequently than can be expected. Top performers in output
are cities in which authors are located who publish a number of highly-cited
papers that is statistically significantly higher than can be expected for
these cities. Using papers published between 1989 and 2009 in information
science improvements to the methods of Bornmann and Leydesdorff (in press) are
presented and an alternative mapping approach based on the indicator I3 is
introduced here. The I3 indicator was introduced by Leydesdorff and Bornmann
(in press).

4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
2
The categories of this paper are: math