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Some of these services definitely draw from the area of Natural Language Processing [1] and Semantic Analysis [2]

[1] http://en.wikipedia.org/wiki/Natural_language_processing

[2] http://en.wikipedia.org/wiki/Semantic_analysis_(machine_lear...

Thanks, however I was already aware of that, I was looking for something more specific.

The research group within IBM that's working on the question and answer portion of Watson is called DeepQA. You can check out lots of information about the team, including publications, at http://researcher.watson.ibm.com/researcher/view_group_subpa...

Thanks for the info.

Good suggestions. Most of these have published papers, we'll add that to the documentation soon. In the meantime you can read an overview of the Watson Jeopardy system here: http://www.aaai.org/Magazine/Watson/watson.php.

Thanks, that would be great.