title: How to combine two (or multiple) kinds of features as one final feature to build classification model?
body: <p>Currently, I meeting such question:How to combine two (or multiple) kinds of features as one final feature to build classification model?</p>
  
  <p>For example, I would like to do a classification model to predict the drug-target interaction, here for each drug I can get 500 features, and each targets I can get 800 features (this two kinds of features are independent each other). As a know, a simple method to combine this two kinds of features which just plus two together (that is 500 + 800 = 1300 feature for each drug-target pair).</p>
  
  <p>Does anybody know other methods to do such kind of thing and use the combined feature to build classification models?</p>