title: What is the difference between dismax and EdisMax?
body: <p>I like to know what is the difference between DisMax and EDisMax..?
  Is there any useful reference to know about that.? Also, I would like to know what are the queries DisMax failed to produce the result for which EDisMax is able to produce the result..?</p>
  
  <p>EDisMax has some Query parameter like  boost Parameter,ps Parameter,The pf2 Parameter; But apart from this query parameter, how <strong><em>EDisMax better than DisMax</em></strong>; how <strong><em>queries are processed between these two</em></strong>.What <strong><em>factors make EDisMax do better than DisMax</em></strong>..</p>
  
  <p>Some queries failed to give result in DisMax but EDisMax gives result for those queries.</p>
  
  <p>I googled the difference between DisMax and EDisMax. I have found, the parameters have been used in EDisMax is only the difference between DisMax and EDisMax; but I am expecting something technically to explain to others in presentation.</p>
  
  <p><strong><em><a href="http://ip:8983/solr/C73/select/?defType=edismax&amp;q=ipod" rel="noreferrer">http://ip:8983/solr/C73/select/?defType=edismax&amp;q=ipod</a> OR video&amp;fl=filename, score&amp;hl=true&amp;hl.fl=content contentenstem filename&amp;hl.zetaContentField=content</em></strong></p>
  
  <p><strong>for above query  EDisMax produces about 238 results; but DisMax produces 0 result. 
  So what is the difference between handling this query by this two parser;What makes EDisMax to produce result.Thats what I like to know ....</strong></p>