The 2rd edition of my paper

I thought writing paper was a process of updating the editions of your paper.
Based on the first edition's suggestion from Mrs.Qin and Mr.Lu, I added some new understanding to the new edition.

This was my first chance of writing paper about NLP. So some problems had displayed. For example, I would like to explain some concept in words, but sometimes the better way was using some figures or tables.

Just now I had sent my 2rd paper to some teachers and some learning brothers. I hoped I can get some modifying suggestions.