Central Force Optimization (CFO) is a new and interesting optimization method that has been developed by Richard A. Formato. The most interesting aspect of CFO is that it is fully deterministic unlike PSO, GA, AIS, or any of the other PIS based techniques.

The papers that he has produced on the topic can be found at:

1. Are Near Earth Objects the Key to Optimization Theory?
2. Central Force Optimization: A New Metaheuristic with Applications in Applied Electromagnetics
3. Central Force Optimization: A New Nature Inspired Computational Framework for Multidimensional Search and Optimization
4. Central Force Optimization: A New Deterministic Gradient -like Optimization  Metaheuristic
5. Comparative Results: Group Search Optimizer and Central Force Optimization
6. Pseudorandomness in Central Force Optimization
7. Central Force Optimization Applied to the PBM Suite of Antenna Benchmarks

And, for all of those interested, click here to download my C++ and Matlab implementations.