Computational Model Library

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This model contains MATLAB code describing the virtual worlds framework used in the paper entitled “Polarization in Social Media: A Virtual Worlds-Based Approach.” The parent directory contains driver code for replicating results from the paper. Additionally, the source code is structured by three directories:

  • Data Structures: Contains classes and objects used in the code, such as the virtualWorlds.m
  • Metrics: Contains code which computes metrics, such as congruentLinks.m
  • Visualization: Contains code for generating pictures and plots, such as drawSystemState.m

Bayesian Updating Opinion Shared Uncertainty Model.

Johnathan Adams | Published Monday, November 16, 2020 | Last modified Friday, May 14, 2021

This is an opinion dynamics model which extends the model found in (Martins 2009). The previous model had an unshared uncertainty assumption in agent-to-agent interaction this model relaxes that assumption. The model only supports a fully connect network where every agent has an equal likelihood of interacting with every other agent at any given time step. The model is highly modular so different social network paradigm can easier be implemented.

Studies on the fundamental role of diverse media in the evolution of public opinion can protect us from the spreading brainwashing, extremism, and terrorism. Many fear the information cocoon may result in polarization of the public opinion. The model of opinion dynamics that considers different influences and horizons for every individual, and the simulations are based on a real-world social network.

1984 social computation model

Harun Šiljak | Published Monday, September 30, 2019

A system of nonlinear differential equations, modelled in MATLAB Simulink, simulating the world of George Orwell’s 1984.

Online Collaboration, Competing for Attention

Miles Manning | Published Wednesday, July 19, 2017 | Last modified Thursday, January 24, 2019

This is a model of a community of online communities. Using mechanisms such as win-stay, lose-shift, and preferential attachment the model can reproduce similar patterns to those of the Stack Exchange network.

Agent-based version of the simple search and barter economy conceived by Peter Diamond in 1982. The model is also known as Coconut Model.

An Agent-Based Model of Collective Action

Hai-Hua Hu | Published Tuesday, August 20, 2013

We provide an agent-based model of collective action, informed by Granovetter (1978) and its replication model by Siegel (2009). We use the model to examine the role of ICTs in collective action under different cultural and political contexts.

This code simulates the WiFi user tracking system described in: Thron et al., “Design and Simulation of Sensor Networks for Tracking Wifi Users in Outdoor Urban Environments”. Testbenches used to create the figures in the paper are included.

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