Name of variable	Symbol	Type	Value
Cross diffusion	D-Cross diffusion	Binary variable	{ $d^{0}$ to the disadvantage of, $d^{1}$ to the advantage of}
Connection	C-Connection	Binary variable	{ $c^{0}$ hard, $c^{1}$ easy}
Theme	T-Themes	Integer variable	{ $t^{1}, \dots, t^{k}$ }
Emotion conveyed by information	E-Emotion	Binary variable	{ $e^{0}$ negative, $e^{1}$ positive}
Origin of information	O-Origin	Boolean variable	{ $o^{0}$ no, $o^{1}$ yes}
Resonance toward the theme	R-Resonance	Binary variable	{ $r^{0}$ not friends, $r^{1}$ friends}
User state	U-Users	Three-valued variable	{ $u^{0}$ information node, $u^{1}$ diffusion node, $u^{2}$ seed node}
Connection strength between nodes	S-Strength of connection	Binary variable	{ $s^{0}$ weak, $s^{1}$ strong}
User effect	I-Effect	Binary variable	{ $i^{0}$ small, $i^{1}$ big}
User preference	F-Preference	Binary variable	{ $f^{0}$ disinterested, $f^{1}$ interested}
User activity	A-Activity	Binary variable	{ $a^{0}$ low, $a^{1}$ high}
Limited user attention	L-Limited attention	Binary variable	{ $l^{0}$ not attracted, $l^{1}$ attracted}
Similarities between users	N-Near	Binary variable	{ $n^{0}$ low, $n^{1}$ high}
User behavior	B-Behavior	Binary variable	{ $b^{0}$ forward, $b^{1}$ purchase, $b^{2}$ information node}