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The head of Google Research talks about his group's projects.

Peter Norvig, Google's director of research, is an expert ace at building machines that answer tough questions. An authority in programming languages and artificial intelligence, he has written an oft-cited book on AI (Artificial Intelligence: A Modern Approach), has taught at the University of California, Berkeley, and the University of Southern California, and was the head of computational sciences at NASA. In 2001, Norvig came to Google to be the director of search quality. Four years later, he became Google's director of research, overseeing about 100 researchers who investigate topics that range from networking to machine translation. Technology Review spoke with Norvig to get a hint of what we can expect from search technology in the years to come.

Technology Review: What does Google Research do?

Peter Norvig: The core of what we do is still search and advertising. A lot of researchers are working on that. They're working to give better-quality search results and to match ads better. Another area of research is gathering more sources of information, such as text in books, still images, video, and now audio in terms of speech recognition. I think another focus is to understand how people interact with Google and interact with each other on the Web, in general. How do people operate in these social networks? Understanding that question can help us serve them better.

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