1. Brief Intro to Agent Based Models with Netlogo
Ran Xu & Ken Frank

2. Agent Based Models Agent based models:
Actors given “rules” to choose behaviors
Network processes: Influence and selection
Observe systems level characteristics that emerge from individual behavior
Cannot always do equilibrium math
Careful: It’s theory
There is no data
Should anchor simulations in empirical work
Do not try to be authentic
Too many parameters in real systems
Reduce to a small number of parameters (3), understand their implications

3. Examples
Frank, K.A., & Fahrbach, K. (1999). "Organizational Culture as a Complex System: balance and Information in Models of Influence and Selection." Special issue of Organization Science on Chaos and Complexity, Vol 10, No. 3, pp
Frank, K. A., S. Maroulis, D. Belman, and M. D. Kaplowitz.  2011.  The social embeddedness of natural resource extraction and use in small fishing communities.  Pages  in W. W. Taylor, A. J. Lynch, and M. G. Schechter, editors.  Sustainable fisheries: multi-level approaches to a global problem.  American Fisheries Society, Bethesda, Maryland.
*Frank, K.A., and *Xu, Ran. (2018) Implementation of Evidence Based Practice in Human Service Organizations: Implications from Agent-Based Models. Journal of Policy Analysis and Management. 37(4): *Co-equal first authors.

4. What Is Netlogo
NetLogo is a programmable modeling environment for simulating natural and social phenomena.
Netlogo is particularly well suited for modeling complex systems developing over time.
NetLogo lets students open simulations and "play" with them, exploring their behavior under various conditions.

5. Where To Start Tutorials Resources The Netlogo Learning Lab Youtube
Resources
The Netlogo Learning Lab
Youtube

6. Other Resources Model Library Cousera Extensions Model Thinking
Social Network Analysis
Extensions
NW-Extension
R-Extension

7. 3 Models As Templates Social influence Model Social Selection Model
Combination of Influence and Selection with Events

8. Download Netlogo: http://ccl.northwestern.edu/netlogo/

9. For some things we will want version 5.3

10. Try the Influence Model

11. Key influence code

13. Selectionmodel

14. Tweak some of the defaults

15. Switch to 6.1 for dynamic selection and influence with events