February 17, 2011 –
IBM’s Watson computer beats Jeopardy’s best contestants ever, Ken Jennings and Brad Rutter, on this date.
The computer researchers acknowledged that Watson had benefited from something they called the “buzzer factor.” Both Mr. Jennings and Mr. Rutter are accomplished at anticipating the light that signals it is possible to “buzz in,” and can sometimes get in with virtually zero lag time. The danger is to buzz too early, in which case the contestant is penalized and “locked out” for roughly a quarter of a second. Watson, on the other hand, does not anticipate the light, but has a weighted scheme that allows it, when it is highly confident, to hit the buzzer in as little as 10 milliseconds, making it very hard for humans to beat. When it was less confident, it took longer to buzz in. In the second round, Watson beat the others to the buzzer in 24 out of 30 Double Jeopardy questions.
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