Jeffrey A Graham

US Patent:

62724797, Aug 7, 2001

Filed:

Jan 22, 1999

Appl. No.:

9/230122

Inventors:

Kristin Ann Farry - Houston TX
Julio Jaime Fernandez - Suger Land TX
Jeffrey Scott Graham - Houston TX

International Classification:

G06N 708

US Classification:

706 13

Abstract:

The present invention is a method of evolving classifier programs for signal processing and control. The present invention uses an `evolver` program examine a large number of potential features, which may be from multiple signals to create a `classifier` program. The output of the classifier program is compared to the desired output. One or more classifier programs is then created and optimized by the evolver program by means of genetic programming. The desired output is again compared to actual classifier program output and the difference is used as a measure of fitness to guide the evolution of the classifier program. The optimized classifier program produced by the present invention is fitter than the background art at correctly providing a repeatable and accurate output, especially for complex and simultaneous input signals. The classifier program may either operate within the program structure of the evolver program or it may be used as an independent program, as, for example, an individualized control program for the controller of a powered prosthesis.