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Do you have link to good emotion recognition if you have used one?

Perhaps, could use wrapper library to combine functionality. It's a very interesting area.

I work on the Watson team, so I'm probably biased, but I think our AlchemyLanguage Emotion Analysis is pretty good: http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercl...

I have used none, but at the time I researched it, a lot of people were talking positively about