IBM supercomputer wins Jeopardy

An IBM computer has handily beat two human competitors on the popular US quiz show Jeopardy in a three-day showdown, highlighting at the same time the progress people have made in making machines able to think like them.

The supercomputer, named Watson after former International Business Machines Corp president Thomas Watson, is a showcase of the company's expertise in advanced science and computing.

Watson showed off its encyclopedic knowledge of topics ranging from ancient languages to fashion design, along with a few glitches. Watson solved clues ranging from agricultural policy in the European Union to the designer Marc Jacobs.

The latest challenge shows that IBM, which turns 100 years old this year, wants to stay at the forefront of technology, even as companies such as Google Inc and Apple Inc have become the industry's darlings.

What makes Watson particularly advanced, even compared to Deep Blue, IBM's chess-playing supercomputer that beat world champion Garry Kasparov in 1997, is its ability to find answers from ambiguous clues, such as this one: "It's a poor workman who blames these."

"What are tools?" answered Watson.

Watson wasn't perfect, however, and made some baffling errors such as coming up with Dorothy Parker instead of The Elements of Style and repeating other contestants' mistakes.

In the end, however, Watson won with $77,147 while Ken Jennings, who won 74 games in a row during the show's 2004-2005 season, came in second with $24,000. Brad Rutter, who has in previous appearances won a total of $3.3 million, followed with $21,600.