In October 2006 we held a short session on graphical modelling. The notes for this session are available in Microsoft Powerpoint format here. If you do not have Microsoft Powerpoint installed you can download the free Powerpoint Viewer from here and use it to view the file.
In addition to these notes the following 4 resource files are also available. These files are in Adobe PDF format and require Adobe Reader, if you do not have this installed download it for free from here.
You will also find more information on these websites;