title: How to handle missing values to use collective classifier in weka
body: <p>I am trying to use a YATSI method in combination of NaiveBayesMultinomial classifier. I have a dataset where are some instances annotated by class. Other instances has missing class ?.</p>
  
  <p>If I try to run YATSI, I will get an error "Cannot handle missing values..."</p>
  
  <p>Could you please help me how to fix it?</p>
  
  <p>Thank you
  Petr</p>