Well..<p><i>Originally</i> I got interested because of an essay PG wrote about Bayesnian spam filtering, so I wrote a Bayesian classifier in Java (this was over 10 years ago, when that was pretty cutting edge).<p>That led to text summarisation - still open source Java stuff, and apparently now considered state-of-the-art[1] (I&#x27;m kind of amazed, because that code is 10 years old).<p>Then I did some AdTech stuff, wrote an open domain natural language question answering thing (like Watson, but not as good - but it was just for fun. bAIb is the way to approach this now if anyone is interested).<p>Now-days I&#x27;m using NLP for future event prediction.<p>[1] <a href="http:&#x2F;&#x2F;dl.acm.org&#x2F;citation.cfm?id=2797081" rel="nofollow">http:&#x2F;&#x2F;dl.acm.org&#x2F;citation.cfm?id=2797081</a>