Review the article by Hemmatian (2019), on classification techniques. Write a paper on :

1. What were the results of the study?
2. Note what opinion mining is and how it’s used in information retrieval.
3. Discuss the various concepts and techniques of opinion mining and the importance of transforming an organization’s NLP framework.
4. There should be headings to each of the questions above as well.  Ensure there are at least two-peer reviewed sources to support your work. The paper should be at least two pages of content (this does not include the cover page or reference page).