Abstract
In this article, we start with John McCarthy’s definition of Artificial Intelligence and describe select approaches to its sub-areas: natural language processing and question answering. We then outline the challenge that IBM Research undertook to build Watson, a question-answering computer system that would compete at the level of a human champion in real time on the American TV quiz show Jeopardy!. We describe the rules of Jeopardy! and list issues that any contestant faces in competing on Jeopardy!. We describe how IBM’s Watson system addresses these issues with its metrics and DeepQA architecture. We briefly describe how Watson performed in the Jeopardy! Challenge shows, and conclude with some thoughts about Watson and its potential applications.
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