title: YOLO anchor box
body: <p>As I read the YOLO paper it says it makes anchor box with K-means.
  However, when I see the code implementing this, it seems to fix anchor size as below.
  I hope you describe what it exactly means or point out my misunderstanding with this.</p>
  
  <p>Thanks, and regards</p>
  
  <pre><code>[yolo] 
  mask = 6,7,8
  ***anchors = 10,13,  16,30,  33,23,  30,61,  62,45,  59,119,  116,90,  156,198,  373,326***
  </code></pre>