Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fluctuations and Pseudo Long Range Dependence in Network Flows: A
  Non-Stationary Poisson Process Model   In the study of complex networks (systems), the scaling phenomenon of flow
fluctuations refers to a certain power-law between the mean flux (activity)
$<F_i>$ of the $i$th node and its variance $\sigma_i$ as $\sigma_i \propto <
F_{i} > ^{\alpha}$. Such scaling laws are found to be prevalent both in natural
and man-made network systems, but our understanding of their origins still
remains limited. In this paper, a non-stationary Poisson process model is
proposed to give an analytical explanation of the non-universal scaling
phenomenon: the exponent $\alpha$ varies between 1/2 and 1 depending on the
size of sampling time window and the relative strength of the external/internal
driven forces of the systems. The crossover behavior and the relation of
fluctuation scaling with pseudo long range dependence are also accounted for by
the model. Numerical experiments show that the proposed model can recover the
multi-scaling phenomenon.

13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex