title: Integrate solr with NLP
body: <p>I am working on solr 4.8.1 version. I want to integrate solr with NLP in order to improve the search relevancy. I am unable to 
  dig out a good tutorial that explains its configuration, its output, its benefit for Solr.</p>
  
  <p>It tried this configuration:</p>
  
  <pre><code>&lt;fieldType name="text_opennlp" class="solr.TextField"&gt;
    &lt;analyzer&gt;
      &lt;tokenizer class="solr.OpenNLPTokenizerFactory"
        sentenceModel="opennlp/en-sent.bin"
        tokenizerModel="opennlp/en-token.bin"
      /&gt;
    &lt;/analyzer&gt;
  &lt;/fieldType&gt;
  </code></pre>
  
  <p>But this is reporting the following error:</p>
  
  <pre><code>Caused by: org.apache.solr.common.SolrException: Plugin init failure for [schema.xml]   fieldType "text_opennlp": Plugin init failure for [schema.xml] analyzer/tokenizer: Error loading class 'solr.OpenNLPTokenizerFactory
  </code></pre>