Stand-alone Post Rating
Before, you had to create a Rating field in comment form to allow users rate articles while they comment. There was no way to rate without commenting. Now users can rate articles without leaving comments. wpDiscuz 7 comes with stand-alone Post Rating system located under the article content.
The second type, is the old, comment-depended way. You should create a “Rating” custom field in comment form allowing people to rate while they leave a comment.