title: Calculate Cosine Similarity Using java Program
body: <p>I have a problem to calculate a similarity measurement to develop a search engine for my final project.</p>
  
  <p>I have to use <strong>tf idf + cosine</strong> similarity in java and I don't have any idea how to calculate it. </p>
  
  <p>For your information, I have my own database which has 811 document</p>