Investigating the effect of selective exposure, audience fragmentation, and echo-chambers on polarization in dynamic media ecosystems

Applied Network Science

Table 3 Experimental parameter values for those chosen to represent audience fragmentation and selective exposure

Parameter	Phenomenon	Simulated values
\(\zeta _c\)	Echo-chambers	0.25, 0.5, 0.75
	(via citizen selection criteria)
\(\zeta _i\)	Audience fragmentation	0.25, 0.5, 0.75
	(via media selection criteria)
r	Citizen memory capacity	1, 2, 10
\(X(u,\phi _{u,i})\)	Selection function	Mean belief
\(\gamma\) term in \(\beta\)	Selective exposure	0, 1, 2
(Eq. 1)	(dissonance threshold)
\(\varphi\)	Institutional tactic	Broadcast, appeal mean
\({\mathcal {I}}\)	Initial institutional belief distribution	\({\mathcal {U}}, {\mathcal {N}}, {\mathcal {P}}\)
\({\mathcal {C}}\)	Initial citizen belief distribution	\({\mathcal {U}}, {\mathcal {N}}, {\mathcal {P}}\)