I'm learning about Watson's NLU but I can't find any reference as to what model it's using for topic modeling. Is it LDA? pLSA? Any other? I understand the question is general, but it's very important to know what's under the hood...
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afaik it uses SiRE, but don't quote me on that. https://developer.ibm.com/answers/questions/28191/what-is-the-watson-relationship-extraction-service/ – Simon O'Doherty Jul 30 '18 at 17:04
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You can use Watson Knowledge Studio to build your own models (which can import CAS models from WEX). – Simon O'Doherty Jul 30 '18 at 17:04
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Watson NLU categories and concepts (which I assume is what you mean by topic modeling) use custom machine learning models that do not directly correspond to either LDA or pLSA.
idfah
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Where do you have this information from? Would be interesting to learn more about it. – Aerodynamika Aug 01 '18 at 21:19