11/7/2010 - Launched September 2010 by Jason Thomas, the GEP4J project is an open-source implementation of Gene Expression Programming in Java. From the project summary: “This project is in the early phases, but you can already do useful things such as evolving decision trees (nominal, numeric, or mixed attributes) with ADF's (automatically defined functions), and evolve functions.” GEP4J is available from Google Project Hosting:

https://code.google.com/p/gep4j/