5 research outputs found
On the fundamental equation of user dynamics and the structure of online social networks
Online social networks suffer from explosive user dynamics such as flaming
that can seriously affect social activities in the real world because the
dynamics have growth rates that can overwhelm our rational decision making
faculties. Therefore, a deeper understanding of user dynamics in online social
networks is a fundamental problem in computer and information science. One of
the effective user dynamics models is the networked oscillation model; it uses
a second-order differential equation with Laplacian matrix. Although our
previous study indicates that the oscillation model provides us with a minimal
but effective model of user interactions, there still remains the open problem
as to the existence of a first-order fundamental differential equation that
respects the structure of the original network. This paper fills in this gap
and shows that, by doubling the dimension of the state space, we can explicitly
but naturally construct a fundamental equation that fully respects the
structure of the original network.Comment: 7 pages, 2 figures. This is a typo-fixed version of the paper
published in NetSci-X 202
Independence of the Fundamental Equation of the Oscillation Model on Algebraic Representations: Social Media Echo Chamber Effect
In the oscillation model that describes the user dynamics of online social
networks, it is known that the fundamental equation can explicitly describe the
causal relationship between the network structure and user dynamics. The
fundamental equation uses algebra that satisfies the anti-commutation relation,
and its matrix representation is not unique. However, even if the matrix
representations are different, the same results should be derived from
different representations of the fundamental equation if they are describing
the same phenomenon. In this paper, we confirm, using the echo-chamber effect
as an example, that the fundamental equations of different matrix
representations lead to the same result.Comment: 4 pages, no figure, IEICE ICETC 2020. arXiv admin note: substantial
text overlap with arXiv:2011.1337
Closed-Form Solutions of the Fundamental Equation That Describes User Dynamics in Online Social Networks
The oscillation model, based on the wave equation on networks, can describe
user dynamics in online social networks. The fundamental equation of user
dynamics can be introduced into the oscillation model to explicitly describe
the causal relation of user dynamics yielded by certain specific network
structures. Moreover, by considering the sparseness of online social networks,
a novel fundamental equation of different form has been devised. In this paper,
we derive a closed-form solution of the new fundamental equation. Also, we find
the closed-form solution of the new fundamental equation can generate the
general solution of the original wave equation.Comment: 7 pages, 2 figures, CANDAR 2020 W
Polarization Model of Online Social Networks Based on the Concept of Spontaneous Symmetry Breaking
The spread of information networks has not only made it easier for people to
access a variety of information sources but also greatly enhanced the ability
of individuals to disseminate information. Unfortunately, however, the problem
of slander in online social networks shows that the evolving information
network environment does not necessarily support mutual understanding in
society. Since information with particular bias is distributed only to those
communities that prefer it, the division of society into various opposing
groups is strengthened. This phenomenon is called polarization. It is necessary
to understand the mechanism of polarization to establish technologies that can
counter polarization. This paper introduces a fundamental model for
understanding polarization that is based on the concept of spontaneous symmetry
breaking; our starting point is the oscillation model that describes user
dynamics in online social networks.Comment: 8 pages, 6 figures, the typo fixed version of ITC3
Derivation and Characteristics of Closed-Form Solutions of the Fundamental Equations for Online User Dynamics
The oscillation model, based on the wave equation on networks, can describe
user dynamics in online social networks. The fundamental equation of user
dynamics can be introduced into the oscillation model to explicitly describe
the causal relation of user dynamics yielded by certain specific network
structures. Moreover, by considering the sparseness of the link structure of
online social networks, a novel fundamental equation of different forms has
been devised. In this paper, we derive a closed-form solution of the new
fundamental equation. Also, we show that the closed-form solution of the new
fundamental equation can generate the general solution of the original wave
equation and investigate the characteristics of the derived general solution.Comment: 16 pages, 8 figures. arXiv admin note: substantial text overlap with
arXiv:2011.0539