Similar to this is Genetic Network Programming with Reinforcement Learning. Where you use the Genetic Network to search the global space and Reinforcement Learning to refine the search...
I have the book "Trading on the Edge" http://books.google.co.nz/books?id=1XQe-y5sojQC&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
There is a section that deals with Fuzzy Logic. From memory they...