How are collaborative-filtering and topic-modeling different and how are they the same?
<p>related to: <a href="https://stackoverflow.com/questions/32215827/simple-python-implementation-of-collaborative-topic-modeling">Simple Python implementation of collaborative topic modeling?</a> </p>

<p>I'm trying to grasp the fundamental differences and the fundamental parts that are the same in <code>collaborative-filtering</code> and <code>topic-modeling</code>. Both seems very much alike to me: trying to look for a latent dimension which can compactly predict which user would like which movie, or which document would contain which word?</p>

<p>Can you shed some light or send me to sources that will clarify that?</p>

<p>Thanks!</p>