title: Scoring Recommendation Engine for new releases
body: <p>I have built a recommendation using collaborative filtering. Have saved the model in a pickle file and would like to put it in production. So two questions here:</p>
  <ol>
  <li>If new content is released, which was not part of my training data, how would this content be recommended?</li>
  <li>While building a model I converted content names into content IDs. So do I have to maintain the same Content IDs whenever I score the model for generating new recommendations? And what would be the Content-ID for something that is just released?</li>
  </ol>
  <p>Thanks!</p>