Chris Welty
Also known as Christopher A. Welty
Chris Welty's work spans ontologies, IBM's Watson and Google's Gemini. He earned a doctorate from Rensselaer Polytechnic Institute in 1995, and during a sabbatical in Padova he worked with Nicola Guarino on OntoClean. He was a member of the technical leadership team for IBM's Watson, which defeated the best Jeopardy! players of all time in February 2011. In 2013, the AAAI Feigenbaum Prize went to the IBM Watson team, and he is among its recipients. As of October 2026, he is a research scientist at Google in New York, where he works on Gemini.
Timeline
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1995
A doctorate from Rensselaer
He earns a Ph.D. from Rensselaer Polytechnic Institute in 1995, with a dissertation titled Comprehensive Software Knowledge Systems.
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1999–2000
OntoClean in Padova
In 1999–2000, he takes a sabbatical from Vassar College in Padova, Italy, and works with Nicola Guarino to develop OntoClean, the first formal methodology for evaluating ontologies.
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2005–2009
Co-chair of the RIF group
He co-chairs the W3C Rule Interchange Format working group from 2005 to 2009.
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February 2011
Watson defeats Jeopardy! champions
In February 2011, Watson defeats the best Jeopardy! players of all time, and he is a member of the technical leadership team for IBM's Watson.
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2013
The AAAI Feigenbaum Prize
In 2013, the AAAI Feigenbaum Prize goes to the IBM Watson team for demonstrating that a synthesis of AI techniques can achieve human-level performance in real-time factual question-answering. He is a recipient of the prize for his work.
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By 2015
Senior research scientist at Google
By 2015, he is a senior research scientist at Google in New York.
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As of October 2026
Working on Gemini at Google
He is a research scientist at Google in New York. He currently works on Gemini and has made contributions to the human evaluation of Gemini models.
Sources and credits
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