title: Understanding parameters in Gensim LDA Model
body: <p>I am using <code>gensim.models.ldamodel.LdaModel</code> to perform LDA, but I do not understand some of the parameters and cannot find explanations in the documentation. If someone has experience working with this, I would love further details of what these parameters signify.
  Specifically, I do not understand:</p>
  
  <ul>
  <li><code>random_state</code></li>
  <li><code>update_every</code></li>
  <li><code>chunksize</code></li>
  <li><code>passes</code></li>
  <li><code>alpha</code></li>
  <li><code>per_word_topics</code></li>
  </ul>
  
  <p>I am working with a corpus of 500 documents which are roughly around 3-5 pages each (I unfortunately cannot share a snapshot of the data because of confidentiality reasons). Currently I have set </p>
  
  <ul>
  <li><code>num_topics = 10</code></li>
  <li><code>random_state = 100</code></li>
  <li><code>update_every = 1</code></li>
  <li><code>chunksize = 50</code></li>
  <li><code>passes = 10</code></li>
  <li><code>alpha = 'auto'</code></li>
  <li><code>per_word_topics = True</code></li>
  </ul>
  
  <p>but this is solely based off of an example I saw and I am not sure how generalizable that is to my data.</p>