Monday, December 11, 2006

New Template

We have just moved over to the new blogger template which makes it possible to search for themes within the blog. Just click on any word next to the word labels for any post and get all posts on a similar theme.

Repast Model of the Week: Fads Model

The Fads Model from Tom Carter is a well commented model utilizing some of Repasts core functions including OpenSequenceGraph, OpenHistogram (histogram), reading in a .pgm for the space, and uses Object2DTorus for the underlying agent grid. The model writes information out using the DataRecorder object

Similar to other Repast Models, the typical way to code a simulation is to divide up the creation of the simulation into three methods - buildModel(), buildDisplay(), buildSchedule(). This division is not strictly necessary, but it does make the creation conceptually clearer and this is what the Fad model does

The buildModel() method is responsible for creating those parts of the simulation that represent what is being modeled. Consequently, the agents and their environment are typically created here together with any optional data collection objects. Of course, this method may call other methods to help build the model.

There are also a few other Repast models available from Tom Carters website: NinaNet, NinaNet2, and WealthModel.

Further information

The original source code of the fads model model can be found:
The model can either be run as a .jnlp (ie using Java web start therefore works on any OS) from:

Or run as an executable by clicking here (Sorry it will only work in Windows). For instructions on how to run a Repast model see the Repast website.