15:32 13 October 2008NewScientist.com news service
David Robson
Every year the Loebner Prize for artificial intelligence is awarded to the chatbot software able to converse most like a human.
It is a version of the Turing test, proposed in 1950 by Alan Turing. A program passes when a human judge cannot tell that they are talking to a machine.
No machine has yet passed. But the winner of the Loebner Prize at the weekend – Elbot, brainchild of Fred Roberts at Artificial Solutions in Germany – came close, according to the contest's rather generous rules.
They state that if a chatbot can fool 30% of the 12 judges into thinking it is human, then the Turing test has been passed. Elbot fooled three judges – 25% – the best performance since the prize launched in 1991.
Unlike most chatbots, the winner didn't try to claim outwardly it was human. Instead he made a joke of being a robot. Roberts hoped that would make the bot's conversations warmer and more entertaining than its competitors...
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