This is a subsection of the Java implementation of The Open University's OpenMark project. In particular, this is the PMatch helper class and its dependencies for marking free-text answers.
The complete source code for the Java implementation of the project, as of 2012, can be found here.
This repository is likely only to be necessary temporarily as an effort is being made to move OpenMark to GitHub in the future.
We intend on using PMatch for supporting free-text answers on Isaac Physics and that will be done, in part, so that we are able to collaborate with some of the Open University's research.