Saturday, October 19, 2013

Evolutionary computing


"In 1995, for instance, the engineer John Koza used evolutionary computing to design a low-pass filter, a device that can cut off sounds above a certain frequency. Koza chose 2, 000 cycles a second as his cut off. After 10 generations, his computer produced a circuit that muffled frequencies above about 500 cycles and only completely extinguished them above about 10, 000. After 49 generations, it had created a circuit that produced a sharp drop-off at 2, 000 cycles. Natural selection had created a design for a seven-rung ladder made out of inductors and capacitors. The same design had been invented in 1917 by George Campbell of AT&T. The computer, without any direction from Koza, had infringed on a patent ."

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