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**Comparing four modeling approaches: System Dynamics, Agent-based Modeling, Cellular Automata, and Discrete Event Simulation using a SIR model as an example**

Over the years several modeling styles have been developed but often it is unclear what are the differenced between them. In this post, we would like to compare and contrast four modeling approaches widely used in Computational Social Science, namely: Syste...

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**Visualizing and Clustering Pizza Places in Pittsburgh**

I am using the dataset provided by Yelp.com to explore the spatial distribution of restaurants in Pittsburgh. I created a small program to parse the json file provided on the website and extract restaurant information from it. The program is available here...

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**A location model based on rent**

I have developed a location model based on rent. In this model, the rent of each cell is calculated by taking the average of agents' income in this area. Agents have different income levels and requirements on space. Agents want to be located in the most ac...

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**Pedestrian model using mobility datasets**

This is a reimplementation of the pedestrian model in “Walk This Way:

Improving Pedestrian Agent-Based Models through Scene Activity Analysis”

by Andrew Crooks et al. The purpose of pedestrian models in general, is to better

understand ...

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**Pedestrian model of agents exiting a building**

I built a model of pedestrians who try to leave the floor through one or

two exits. The map being used is from GMU’s Krasnow Institute. The model

records the frequency of each cell being chosen as a path and draws the

result into a path...

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**Agents Exiting A Room**

This is a model of agents who try to leave the room through the

exit on the right hand side. The model also records the frequency of

each cell being chosen as a path and draws the result into a path graph,

which can be exported to GIS f...

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**Path finding model using the A-star algorithm in Netlogo**

This is a path-finding model using the A-star algorithm to find the shortest path. The models uses the map of George Mason University, including the buildings, walkways, drive-ways, and waters. Commuters randomly select a building as destination, find and f...

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**Segregation Model and Calculation of Moran's I**

Recently I have created a segregation model with the calculation of Moran's I, a measure of spatial autocorrelation developed by Patrick Alfred Pierce Moran. In this model, I am using the map of Washington DC.The form of data is vector data. Each turtle he...

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