Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On bibliographic networks   In the paper we show that the bibliographic data can be transformed into a
collection of compatible networks. Using network multiplication different
interesting derived networks can be obtained. In defining them an appropriate
normalization should be considered. The proposed approach can be applied also
to other collections of compatible networks. We also discuss the question when
the multiplication of sparse networks preserves sparseness. The proposed
approaches are illustrated with analyses of collection of networks on the topic
"social network" obtained from the Web of Science.

32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph