The system described on this site was developed as part of an ongoing PhD project (2009–2012). This site provides an overview to the system as it stands: although the purpose here is mostly to describe what there is in the system, some of the the why-s and how-s are covered too. More discussion of the project will be found at sdfphd.net.
To supplement these pages, a blog has been put in place where updates and changes will be logged; this provides an rss feed for anyone who may wish to follow this project. The blog will also host commentary and examples to supplement these static informational pages.
Please refer to the alpha subsection for an initial introduction to the system; while some aspects of the alpha-build are now redundant, the conceptual basis of the system is explained within that section.
The current version of the system is sdf.sys_beta, and the other subsections (listed below) deal with concepts embedded within sdf.sys_beta.