This particular robot, DelFly — see http://hardware.slashdot.org/s..., is a miracle of miniaturisation. It weighs just 20 grams including a 1-gram autopilot and 4 grams devoted to a stereo vision system. It was designed at the Delft University of Technology in the Netherlands. The idea was to try to evolve behaviour that would get the autonomous system to fly though a window all on its own. This involves finding the window and working out a flight configuration that gets DelFly though the window.
DelFly learned using the genetic algorithm, An initial population was created at random and then tested in simulated environment. Each individual was rated on their success and a fitness value computed. The best individuals are used to create a new generation by crossover and mutation. After 150 or more generations the behaviour tree proved about 88% successful which should be compared to an 82% success rate for a hand-crafted tree.
So put simply the DelFly evolved to fly though the window — just like the real thing."
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