NetLogo · IABM ch. 8 · Wilensky 2012

Simple Viral
Marketing

Five hundred people and one product. The floor is who knows whom. Height is when each person adopted.

01Source
02Network
03Seeding
04Budget 3 seeds
110
05Random seed
06Speed 12 ticks / s

space go · → step · S setup
click any light to trace who convinced whom

Model: Simple Viral Marketing © 2012 Uri Wilensky, NetLogo Models Library (Wilensky & Rand, An Introduction to Agent-Based Modeling, MIT Press, 2015). This page, its port of the model and the NetLogo run: CC BY-NC-SA 3.0. Drawn with Construct.

0of 500
have adopted
0
through a neighbour
0
through advertising
0
no links · reached
0
still waiting
adopters over timedrag to scrub
The floor is the social network: each ring is a person, each line a link. A ring lights up when that person adopts.
A rising line joins a person to an adopted neighbour, lifted to the moment they adopted.
A vertical line marks adoption through advertising (1% a tick).
On the rim, the people with no links. Only advertising can reach them; the taller the spike, the longer it took.
The gold disc is now. Height is time, on a square-root scale.
0tick