## How does Wolfram|Alpha convert a natural language input query to internal formula format?

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**How does Wolfram|Alpha convert a natural language input query to internal formula format?**

Stephen Wolfram wrote a great blog post in January 2011 comparing IBM Watson with Wolfram|Alpha side by side, entitled “Jeopardy, IBM, and Wolfram|Alpha”.

http://blog.stephenwolfram.com/2011/01/jeopardy-ibm-and-wolframalpha/

Apparently Wolfram|Alpha uses Stephen Wolfram’s own Mathematica software to supposedly compute symbolic representations.

http://en.wikipedia.org/wiki/Mathematica

I would welcome a more detailed explanation of just how this works myself! ;^)

I was able to find this Youku video of Stephen Wolfram’s brother Conrad Wolfram explaining symbolic computation in Mathematica.

http://v.youku.com/v_show/id_XMTA1Nzg4NzQ4.html