Repast: A Software Toolkit for
Agent-Based Social Science Modeling

Self-Study Guide for Java-Based Repast (RepastJ)

Last Updated: 4 February 2009

Site Maintained By: Leigh Tesfatsion Professor of Economics and Mathematics Department of Economics Iowa State University Ames, Iowa 50011-1070 Telephone: (515) 294-0138 http://www.econ.iastate.edu/tesfatsi/ tesfatsi AT iastate.edu

Guide for Newcomers to Agent-Based Modeling Agent-Based Computational Economics (ACE) Resources Online ACE Course (self-study eBook) ACE/CAS Comp Labs and Demo Software ACE/CAS General Software and Toolkits

Objectives and Topic Listing:

Repast (REcursive Porous Agent Simulation Toolkit) is a freely available agent-based simulation toolkit specifically designed for social science applications. Repast permits the systematic study of complex system behaviors through controlled and replicable computational experiments. Originally developed by David Sallach and other researchers at the University of Chicago and the Argonne National Laboratory, Repast is now managed by the non-profit volunteer organization ROAD (Repast Organization for Architecture and Development).

Repast provides a core collection of classes for the building and running of agent-based simulations and for the collection and display of data through tables, charts, and graphs. A particularly attractive feature of Repast is its ability to integrate GIS (geographical information science) data directly into simulations.

At present, Repast has been released in four versions supporting model development in three different programming languages: (1) RepastJ (Java based); (2) RepastPy (based on the Python Scripting language); (3) Repast.Net (implemented in C# but any .Net language can be used); and (4) RepastS (Repast Simphony, Java based). Repast can be run on virtually all modern computing platforms (e.g., Windows, Mac OS, and Linux).

The latest releases of Repast, along with detailed technical information regarding the installation and use of Repast, can be found at the Repast Sourceforge Website.

In summer 2004 an informal Repast Study Group was organized at Iowa State University for those wishing to undertake a study of the Repast toolkit. The primary reason for organizing the group was to help participants obtain some facility with Repast through readings, hands-on experience with Repast demos, and simple programming exercises. The objective was to determine the degree to which Repast provides a useful and user-friendly agent-based modeling tool for economics and related fields.

This site, originally developed for Repast Study Group participants, provides links to readings, discussion materials, software, and other resources of potential use to those wishing to embark on a self-study of RepastJ, i.e., Repast based on a Java development environment. Although some prior programming experience is desirable, it is not presumed.

**0.For Those Who Want to Jump Right In

1. Introduction to Agent-Based Social Science Modeing
   1. What is a Complex Adaptive System (CAS)?
   2. What is Agent-Based Modeling (ABM)?
   3. What is Agent-Based Computational Economics (ACE)?
2. Agent-Oriented Programming
   1. General Overview
   2. Introduction to Java
3. Getting Acquainted with RepastJ
   1. Background Materials
   2. Downloadable Stand-Alone RepastJ Demos
4. Programming with RepastJ
   1. The RepastJ Software Framework
   2. RepastJ Development Environments
   3. RepastJ Documentation and Tutorials
   4. RepastJ Demos and Applications (Open Source)
   5. Design of Experiments
5. Possible Repast Modeling Application Areas: On-Line Resource Sites

Topics

0. For Those Who Want to Jump Right In

• John T. Murphy has prepared a useful tutorial titled Java Basics (html,7pp) that provides a quick guide to basic Java concepts to help people navigate through the writing of a Java program.

• The latest version of RepastJ can be downloaded as freeware from the Repast Sourceforge Site. This download includes a number of stand-alone RepastJ demonstration models (demos) that can be opened and run without need for any programming or compilation: e.g., Conway's Game of Life; GisModel; HeatBugs, Mouse Traps, and SugarScape.

• To develop RepastJ applications, or even to run existing RepastJ demo models, it is useful to have some kind of integrated development environment (IDE) that provides an integrated set of tools for code development, debugging, compilation, running, and display. Free Java IDES such as NetBeans, Eclipse, and JBuilder Foundation are available on the web (locate by a Google search). They can either be downloaded separately or packaged together with the latest version of the Java Development Kit (JDK), formerly called the Java SDK (Software Development Kit).

• Michael Neugart has prepared notes on Setting Up RepastJ Projects in the Eclipse IDE. This tutorial covers where to go for free downloads of a Java compiler, RepastJ, and the Eclipse IDE. It also explains (with helpful screenshots) how to set up a RepastJ project in Eclipse.

• Deddy Koesrindartoto (SBM-ITB, Indonesia) has prepared a RepastJ Tutorial titled Setting Up for Repast, and Running a Repast Stand-Alone Example (ppt,2606K). This tutorial covers how to download and install RepastJ, and how to run the stand-alone RepastJ demos (including how to customize the display of output data) in an IDE. It is out-of-date with regard to specific version numbers for RepastJ and the Java JDK, but the general step-by-step instructions should still be informative.

• Deddy Koesrindartoto (SBM-ITB, Indonesia) has prepared a second introductory Repast Tutorial titled Integrating the Repast Library and Running Repast Examples Using JBuilder X (ppt,3153K). This tutorial is a follow-on to his first Repast Tutorial (see above). Topics covered include: Configuring the Repast Library in JBuilderX; Downloading Repast source code examples; Running Repast examples using JBuilderX IDE; Incorporating the Repast Library into a Project; Additional information on the JBuilder IDE; and a RepastJ IPD demo (based on course materials prepared by Lars-Erik Cederman).

• John T. Murphy has prepared a site titled "Carry and Drop Model": A RepastJ Tutorial (html). that slowly and carefully takes the reader through the three basic elements of a RepastJ model: a Model Object; a Space Object that controls the environment in which action takes place; and an Agent Object. All three aspects are carefully and consistently illustrated in terms of a concrete model example (the "Carry and Drop Model") that is constructed in 31 incremental steps. Graphical depiction via chart and histogram displays are also covered, and source code is provided in a separate zip file.
  The Murphy Tutorial can be accessed at the main entry URL above. Murphy provides detailed verbal explanations of each of the 31 steps in this tutorial. However, some additional helpful notes on the first 24 steps, with graphical visualizations of key points, are available as follows:

  • "Murphy Tutorial: Notes on Steps 1-3" (ppt,397K), by Tom Schenk (Drake University);
  • "Murphy Tutorial: Notes on Steps 4-9" (ppt,72K), by Junjie Sun (ISU).
  • "Murphy Tutorial: Notes on Steps 10-18" (ppt,565K), by Charlie Gieseler (Sandia).
  • "Setting Up the Murphy Tutorial as an Eclipse Project" (ppt,564K), by Charlie Gieseler (Sandia)
  • "Setting Up the Murphy Tutorial as a JBuilder Project" (ppt,1163K), by Deddy Koesrindartoto (SBM-ITB, Indonesia)
  • "Murphy Tutorial: Notes on Steps 19-24" (ppt,84K), by Junjie Sun (ISU).

  Important Note on Murphy Tutorial: Several of the Murphy Tutorial steps make use of (pseudo-)random numbers that are generated using particular classes from a special Java archive (JAR) file called colt.jar. In addition, Murphy Tutorial steps 30 and 31, in which code for a Chart and Histogram are introduced, require certain special plot classes from a JAR file called plot.jar. When I downloaded RepastJ (Version 3.0) as a zip file, and then unzipped this file with directory structure intact, both colt.jar and plot.jar were in the resulting RepastJ library ("lib") directory. In addition, the class files for RepastJ itself were bundled into a JAR file (RepastJ.jar) found in the RepastJ main directory. You need to be sure that the paths to all three of these JAR files are in the classpath for the Murphy Tutorial project so the project can find them. For example, using JBuilderX Developer as my Integrated Development Environment (IDE), I was able to code up, compile, and run the entire Murphy Tutorial project (Steps 1-31) by associating with this project a "required library" directory containing RepastJ.jar, colt.jar, and plot.jar.

  Steven F. Railsback, Steven L. Lytinen, and Stephen K. Jackson have developed a useful site called StupidModel: A Template Model for ABM Platforms (html). The "StupidModel" template is implemented in five different platforms: NetLogo; RepastJ; MASON; Java Swarm; and Objective C Swarm. Although relatively simple, StupidModel includes many commonly used features of agent-based modeling (ABM) platforms.

  Sixteen versions of StupidModel are implemented for each platform, beginning with a bare bones version and ending with a relatively sophisticated version that involves two agent types, a full agent life cycle (birth, reproduction, predation, and death), and a habitat with data read from an input file. Each implementation is made available as freeware with accompanying implementation notes.

  The authors include at this site a concise description of the basic StupidModel Formulation that takes the reader step by step through the 16 template versions. In addition, the authors provide a pointer to a paper titled "Agent-Based Simulation Platforms: Review and Development Recommendations" that reviews and compares the five ABM platforms and seeks to identify key development priorities both for these specific ABM platforms and for ABM platforms in general.

  For assistance with basic set-up and model design tasks for RepastJ (V3.X), users are urged to consult the RepastJ How-To Documentation and Third-Party Tutorials. Each step of the Murphy Tutorial (above), while self-sufficiently explained, points to the appropriate Repast How-To file(s) for additional background information related to the step being taken for those who wish to view it.

I.Introduction to Agent-Based Social Science Modeling

I.A What is a Complex Adaptive System (CAS)?

• Leigh Tesfatsion, "Complex Adaptive Systems" (pdf,40K).

• Sunny Y. Auyang, Synthetic Analysis of Complex Systems I - Theories (html,11pp), circa 2000.
  Abstract: This thoughtful essay by independent researcher Sunny Auyang addresses the question "what is complexity." The author attempts to extract the commonly shared ideas implicit in many formalized conceptions of complexity and also in the general way that people tend to think about complicated situations.

I.B What is Agent-Based Modeling (ABM)?

• Robert Axelrod and Leigh Tesfatsion, "On-Line Guide for Newcomers to Agent-Based Modeling in the Social Sciences" (html).
  Abstract: This guideline provides a short annotated list of introductory readings for newcomers to agent-based modeling in the social sciences. It also provides pointers to additional readings and software to help interested readers get started on their own agent-based research.

I.C What is Agent-Based Computational Economics (ACE)?

• Leigh Tesfatsion, ACE Tutorial (pdf,310K).
  Abstract: This tutorial presentation provides a brief introduction to the ACE methodology, using a variety of ACE models for concrete illustration.

  Rob Axtell, "Agent-Based Computing in Economics" (pdf,256K), presented at the VII Trento Summer School, July 2006. ON-LINE

  Leigh Tesfatsion, "Agent-Based Computational Economics: Modeling Economies as Complex Adaptive Systems" (pdf preprint,71K), Information Sciences, Volume 149 (2003), 263-269.

  Abstract: This article outlines the main objectives and defining characteristics of the ACE methodology. It briefly surveys several active ACE research areas, highlighting a number of key contributions.

  Leigh Tesfatsion, "Agent-Based Computational Economics: A Constructive Approach to Economic Theory" (pdf preprint,397K), Chapter 1 in L. Tesfatsion and K. L. Judd (Eds.), Handbook of Computational Economics, Vol. 2: Agent-Based Computational Economics, Handbooks in Economics Series, North Holland, Amsterdam, the Netherlands, Spring 2006.

  Abstract: Agent-based Computational Economics (ACE) is the computational study of economic processes modeled as dynamic systems of interacting agents. This chapter explores the potential advantages and disadvantages of ACE for the study of economic systems. General points are concretely illustrated using an ACE model of a two-sector decentralized market economy. Six issues are highlighted: Constructive understanding of production, pricing, and trade processes; the essential primacy of survival; strategic rivalry and market power; behavioral uncertainty and learning; the role of conventions and organizations; and the complex interactions among structural attributes, institutional arrangements, and behavioral dispositions.

Other introductory source materials on ACE/CAS

II. Agent-Oriented Programming

II.A General Overview

• Leigh Tesfatsion, Agent-Oriented Programming: An Introduction (pdf,105K).

• Leigh Tesfatsion, Illustration of Agent-Oriented Programming: Per Bak's Sand Pile Model (pdf,50K).

• Nigel Gilbert and Pietro Terna, "How to Build and Use Agent-Based Models in Social Science" (pdf,27pp), Discussion Paper, May 18, 1999.
  Abstract: This essay discusses computational modeling as a third way of building social science models. Specific advice is given regarding how to build environments, represent agents, and specify agent behavioral rules. An object-oriented programming approach is stressed.

  Nigel Gilbert and Stephen Bankes, Platforms and Methods for Agent-Based Modeling (pdf,49K), Proceedings of the National Academy of Sciences, U.S.A., 99 (Suppl. 3), May 14, 2002, 7197-7198.

  Nicholas R. Jennings, "On Agent-Based Software Engineering" (pdf,257K), Artificial Intelligence 117 (2000), 277-296, copyright © 2002 Elsevier Science B.V. All rights reserved.

  Abstract: "Agent-based computing represents an exciting new synthesis both for Artificial Intelligence (AI) and, more generally, Computer Science. It has the potential to significantly improve the theory and the practice of modeling, designing, and implementing computer systems... The standpoint of this analysis is the role of agent-based software in solving complex, real-world problems. In particular, it will be argued that the development of robust and scalable software systems requires autonomous agents that can complete their objectives while situated in a dynamic and uncertain environment, that can engage in rich, high-level social interactions, and that can operate within flexible organizational structures."

  Matt Weisfeld, The Object-Oriented Thought Process, SAMS Publishing (Division of Macmillan), Second Edition, Indianapolis, Indiana, 2003, 288pp., ISBN:0-672-32611-6 (paperback).

  Abstract: This book is designed to help newcomers to object-oriented programming (OOP) to learn guidelines for solid class design, to master the major concepts of inheritance, composition, interfaces, and abstract classes, and to create components to use in building more sophisticated systems. The author motivates and illustrates his points by taking readers step by step through a real-world application -- a simple e-commerce application framework using Java interfaces and abstract classes.

II.B Introduction to Java

• Sun Microsystems maintains a site called The Java Tutorials that provides a practical guide for programmers with pointers to hundreds of complete working examples and "trails" (groups of lessons) on various topics (e.g., getting started, learning Java, essential Java classes, user interfaces, writing applets, creating a GUI, etc.).

• Sun Microsystems maintains a Document Library for the Java Platform Technology.

• Sun Microsystems maintains a site titled New to Java Center that provides a collection of links to Java resources (articles, tutorials, online books, and software downloads) to help people new to Java to find what they need to start writing applications. The resources are divided into three categories: (1) Java Platform Overview; (2) Getting Started (How to Set Up the Java Platform on a PC); (3) Step-by-Step Programming (Learning the Basics of the Java Programming Language).

• Lars-Erik Cederman (ETH Zentrum, Swiss Federal Institute of Technology, Zurich) has developed a brief Java Tutorial (pdf,38K).

• John T. Murphy has prepared a useful tutorial titled Java Basics (html,7pp) that provides a quick guide to basic Java concepts to help people navigate through the writing of a Java program.

• You can obtain a free electronic version of Bruce Eckel, Thinking in Java, Third Edition, Prentice-Hall, 2003.

• The O'Reilly Java Series, including, in particular, the well-received Head First Java, Learning Java, Java in a Nutshell, and Java 1.5 Tiger: A Developer's Notebook.

• Michael Thomas Flanagan (EE, University College London, UK) has developed and released as open-source software a Java scientific library to support both his own research and his undergraduate programming courses and projects. Included in the library are links to source files and documentation for classes handling a wide variety of numerical functions, including: inut/output; graph plotting; mathematical functions and physical constants; random numbers and deviates; error propagation; regression; optimization; Fourier transform and short-time Fourier transform; numerical integration; interpolation; root searching; matrices; complex arithmetic; circuits; impedance spectroscopy; optics; reflexivity; and control and system engineering routines. Flanagan also provides Notes on Object-Oriented Programming (OOP) in Java that includes tutorial materials for learning the Java programming language, instructions for how to download, install, and run a Java program on a personal computer, and instructions for how to set up his Java Scientific Library on a personal computer.

Other source materials related to agent-oriented programming

III. Getting Acquainted with RepastJ

III.A Background Materials

• Lars-Erik Cederman (ETH Zentrum, Swiss Federal Institute of Technology, Zurich) developed a useful Guide to Installing Repast in 2001. A revised updated version of this Guide can be obtained here (pdf,20K).

• Lars-Erik Cederman (ETH Zentrum, Swiss Federal Institute of Technology, Zurich) teaches a course at ETH titled Introduction to Computational Modeling of Social Systems. The course begins with an introduction to the rationale and principles of agent-based modeling. It also covers the basics of object-oriented programming using Java, as well as the basics of RepastJ. The remainder of the course focuses on the computational modeling of social systems, drawing on a number of concrete examples (implemented in RepastJ) from political science, economics, and sociology. Students are provided step-by-step instructions how to program up and run these examples using RepastJ. Many course materials are freely provided on-line, including exceptionally clear and interesting lecture slides and handouts.

• You might also want to browse the materials that Lars-Erik Cederman and Laszlo Gulyas (Eötvös Loránd University, Budapest, Hungary) gathered together for a Harvard course (Gov 2015) they taught in 2001 titled Introduction to Computational Modeling for Social Scientists (html). This course provides an introduction to Java programming using RepastJ with no presumption of prior programming experience.

• Nick Collier (Verizon), Repast: An Extensible Framework for Agent Simulation (pdf,36K), Working Paper, Social Science Research Computing, University of Chicago, 2001.

• Robert Tobias and Carole Hofmann (2004), Evaluation of Free Java-Libraries for Social-Scientific Agent Based Simulation (html,31pp), Journal of Artificial Societies and Social Simulation, Vol. 7, No. 1.
  Abstract: This paper uses a comprehensive set of criteria to compare four freely available Java-based programming libraries for support of social scientific agent-based computer simulation: RepastJ, Swarm, Quicksilver, and VSEit. The authors conclude: "...the weighted results show Repast(J) to win out over the other Java based programming libraries examined."

  People interested in Repast can freely subscribe to the Repast-interest Mailing List This list is for general discussion of, and help with, writing models with Repast and modeling issues in general.

III.B Downloadable Stand-Alone RepastJ Demos

• The latest version of RepastJ can be downloaded as freeware from the Repast Sourceforge Site. This download includes a number of stand-alone RepastJ demonstration models that can be opened and run without need for any programming or compilation: e.g., Conway's Game of Life; GisModel; HeatBugs, Mouse Traps, and SugarScape. To access and run these RepastJ demo models, see the detailed instructions by Deddy Koesrindartoto (SBM-ITB, Indonesia) included in his RepastJ Tutorial titled Setting Up for Repast, and Running a Repast Stand-Alone Example (ppt,2606K).

IV. Programming with RepastJ

IV.A The RepastJ Software Framework

• The latest release of the RepastJ software framework (open source), together with documentation, tutorials, and demos, can be downloaded from the Repast Site at Sourceforge.

• For assistance with basic set-up and model design tasks, users are urged to consult the Repast How-To Documentation and Third-Party Tutorials.

IV.B RepastJ Development Environments

Note: Integrated Development Environments (IDEs) are programs that permit you to write, compile, run, and debug programs from within a single environment.

• Eclipse IDE

  • Eclipse IDE is a freely available powerful open-source Java IDE that can be used for RepastJ applications.

  • A brief Overview of Eclipse (html) is provided by Scott Storkel.

  • John T. Murphy has prepared a brief tutorial, titled Eclipse Basics (html), that explains the primary steps needed to create a Java project in Eclipse and to work with it effectively.

  • Charlie Gieseler (Sandia National Lab, Albuquerque, NM) has prepared Notes on Eclipse (html). In these notes he comments on the above Storkel tutorial, and he provides pointers to additional tutorials, books, and other miscellaneous Eclipse-related materials.

  • Charlie Gieseler (Sandia National Lab, Albuquerque, NM) has prepared a ppt presentation titled Installing Repast in the Eclipse IDE (ppt,618K).

• IntelliJ IDEA IDE

  • IntelliJ IDEA is a Java IDE developed and distributed by the software development company JetBrains. The June 2004 release IntelliJ IDEA 4.5 (code-named "Pallada") includes full support of Java Development Kit (JDK) 1.5. Basic instructions for using IntelliJ IDEA can be accessed at the Repast Site at the University of Chicago NOTE: This is a commercial product (not free!).

• JBuilder IDE

  • JBuilder is Borland's Java IDE. It comes in various versions, ranging from a stripped down package JBuilder Foundation for personal use all the way up to an industrial strength package for commercial development. Borland offers a free full downloadable version of JBuilder Foundation. Each JBuilder release relies on the latest available version of the Java Development Kit (JDK). For those using a JBuilder product purchased prior to the 2004 introduction of JDK 1.5 (Tiger), a major Java upgrade that includes generics, a freely available and easily installed Open-Source Tool is available here that permits JBuilder to compile and run projects developed with JDK 1.5. However, JDK 1.6 is already out, JDK 1.7 is planned, and so forth, so it's hard to keep current.

  • Laszlo Gulyas (Eötvös Loránd University, Budapest, Hungary) and Lars-Erik Cederman (Swiss Federal Institute of Technology, Zurich), Notes on Installation of a Development Environment for RepastJ (pdf,717K), Harvard University, prepared 2001-2003.
    Abstract: This multi-part document is out of date with regard to software versions, but might still be of some use. It takes you through the process of installing Repast, assuming JBuilder and a Java Development Kit (JDK) -- which the authors refer to using the older language of a Software Development Kit (SDK) -- have already been installed. It also covers the installation of a Repast IPD Tutorial (see Section IV.D below), configuring JBuilder for Repast, and the main technical steps for creating a Java program with JBuilder (how to use the JBuilder development environment, creating a new project, creating a new class, compiling your class, and running your class/program).

• NetBeans IDE

  • Sun Microsystems provides a freely available full-featured IDE for Java developers called the NetBeans IDE. The NetBeans IDE can be downloaded either separately or bundled with the latest JDK version using download links at the above site.

IV.C Other Repast Documentation and Tutorials

• Lars-Erik Cederman (Swiss Federal Institute of Technology, Zurich) and Laszlo Gulyas (Eötvös Loránd University, Budapest, Hungary), Tutorial Sequence for Repast: An Iterated Prisoner's Dilemma Game (pdf,35K), May 21, 2001.

• Deddy Koesrindartoto (SBM-ITB, Indonesia) has prepared a detailed introductory Repast Tutorial titled Setting Up for Repast, and Running a Repast Stand-Alone Example (ppt,2606K). This tutorial covers the downloading and installation of free Java IDEs (Eclipse and JBuilderX Foundation), obtaining RepastJ, and running sample RepastJ programs (including the customized display of output data).

• Deddy Koesrindartoto (SBM-ITB, Indonesia) has prepared a second introductory Repast Tutorial titled Integrating the Repast Library and Running Repast Examples Using JBuilder X (ppt,3153K). This tutorial is a follow-on to his first Repast Tutorial (see above). Topics covered include: Configuring the Repast Library in JBuilderX; Downloading Repast source code examples; Running Repast examples using JBuilderX IDE; Incorporating the Repast Library into a Project; Additional information on the JBuilder IDE; and a RepastJ IPD demo (based on course materials prepared by Lars-Erik Cederman).

• John T. Murphy has prepared the "Carry and Drop Model": A RepastJ Tutorial (html). that slowly and carefully takes the reader through the three basic elements of a RepastJ model: a Model Object; a Space Object that controls the environment in which action takes place; and an Agent Object. All three aspects are carefully and consistently illustrated in terms of a concrete model example (the "Carry and Drop Model") that is constructed in 31 incremental steps. Graphical depiction via chart and histogram displays are also covered, and source code is provided in a separate zip file.
  Important Note: Several of the Murphy Tutorial steps make use of (pseudo-)random numbers that are generated using particular classes from a special Java archive (JAR) file called colt.jar. In addition, Murphy Tutorial steps 30 and 31, in which code for a Chart and Histrogram are introduced, require certain special plot classes from a JAR file called plot.jar. When I downloaded RepastJ (Version 3.0) as a zip file, and then unzipped this file with directory structure intact, both colt.jar and plot.jar were in the resulting RepastJ library ("lib") directory. In addition, the class files for RepastJ itself were bundled into a JAR file (RepastJ.jar) found in the RepastJ main directory. You need to be sure that the paths to all three of these JAR files are in the classpath for the Murphy Tutorial project so the project can find them. For example, using JBuilderX Developer as my Integrated Development Environment (IDE), I was able to code up, compile, and run the entire Murphy Tutorial project (Steps 1-31) by associating with this project a "required library" directory containing RepastJ.jar, colt.jar, and plot.jar.
  The Murphy Tutorial can be accessed at a main entry site titled Agent-Based Modeling Tutorial (html). Murphy provides detailed verbal explanations of each of the 31 steps in his tutorial. However, some additional helpful notes on the first 24 steps, with graphical visualizations of key points, are available as follows:

  • "Murphy Tutorial: Notes on Steps 1-3" (ppt,397K), by Tom Schenk (Drake University);
  • "Murphy Tutorial: Notes on Steps 4-9" (ppt,72K), by Junjie Sun (ISU).
  • "Murphy Tutorial: Notes on Steps 10-18" (ppt,565K), by Charlie Gieseler (Sandia).
  • "Setting Up the Murphy Tutorial as an Eclipse Project" (ppt,564K), by Charlie Gieseler (Sandia)
  • "Setting Up the Murphy Tutorial as a JBuilder Project" (ppt,1163K), by Deddy Koesrindartoto (SBM-ITB, Indonesia)
  • "Murphy Tutorial: Notes on Steps 19-24" (ppt,84K), by Junjie Sun (ISU).

  Extensive documentation and tutorials about Repast can be accessed at the Repast Site at Sourceforge

IV.D RepastJ Demos and Applications (Open Source)

• A variety RepastJ demos focusing on variations of the Iterated Prisoner's Dilemma (IPD) game have been developed by Lars-Erik Cederman (Swiss Federal Institute of Technology, Zurich) and Laszlo Gulyas (Eötvös Loránd University, Budapest, Hungary) for a Harvard course (Gov 2015) taught in 2001. These IPD Repast demos (html) (available for downloading as zip files) include: SimpleIPD, EvolIPD, GridIPD, GraphIPD, ExperIPD, and NetGridIPD.

• Source code for a variety of research projects implemented in RepastJ can be accessed at the Repast Site at Sourceforge

IV.E Design of Experiments

• Leigh Tesfatsion, "Experimental Design: Basic Concepts and Terminology" (pdf,43K).

Possible Repast Modeling Application Areas

• Agent-Based Computational Laboratories

• Learning and the Embodied Mind

• Evolution of Economic Institutions and Social Norms

• Evolution of Economic Networks

• Industrial Organization

• Technological Change and Economic Growth

• Financial Markets

• Business and Management

• Agricultural and Environmental Issues

• Labor Markets

• Restructured Electricity Markets

• Design of Auctions and Other Market Forms

• Automated Markets and Software Agents

• Organization of Firm and Markets

• Multi-Market Modeling

• Network, Path-Dependence, and Lock-In Effects

• Political Economy

• Parallel Experiments with Real and Computational Economic Agents

• Empirical Validation of Agent-Based Computational Models

Copyright © 2009 Leigh Tesfatsion. All Rights Reserved.