Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The gradual evolution of buyer--seller networks and their role in
  aggregate fluctuations   Buyer--seller relationships among firms can be regarded as a longitudinal
network in which the connectivity pattern evolves as each firm receives
productivity shocks. Based on a data set describing the evolution of
buyer--seller links among 55,608 firms over a decade and structural equation
modeling, we find some evidence that interfirm networks evolve reflecting a
firm's local decisions to mitigate adverse effects from neighbor firms through
interfirm linkage, while enjoying positive effects from them. As a result, link
renewal tends to have a positive impact on the growth rates of firms. We also
investigate the role of networks in aggregate fluctuations.

5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
18
The categories of this paper are: econ