CMU Researcher Outlines How Watson Works - International Business Times.
Yesterday, Watson screwed up on the final Jeopardy! question and show its weaknesses. The answer was, "This city's largest airport is named for a World War II hero; its second largest, for a World War II battle." The question was, "What is Chicago?" Both Jennings and Rutter answered correctly, while Watson answered, "What is Toronto?" While there are U.S. cities named Toronto, they are not large enough to have two airports. David Ferrucci, the manager of the Watson project at IBM Research and someone Nyberg has worked with extensively, gave multiple reasons for the odd screwup. He said Watson downgrades the significance of category titles and since "what U.S. City" wasn't in the question; it probably didn't know it had to be in America. Also, Ferrucci said Watson was likely confused because there is a city named Toronto in the United States and the Toronto in Canada has an American League baseball team. Ferrucci was pleased with how much Watson bet.
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