Update README.md

README.md

@@ -59,7 +59,20 @@ Since B2W-Reviews01 offers the exact text written by users, this corpus also off
 
 ### Data Fields
 
-[More Information Needed]
+* **submission_date**: the date and time when the review was submitted.
+* **reviewer_id**: a unique identifier for the reviewer.
+* **product_id**: a unique identifier for the product being reviewed.
+* **product_name**: the name of the product being reviewed.
+* **product_brand**: the brand of the product being reviewed.
+* **site_category_lv1**: the highest level category for the product on the site where the review is being submitted.
+* **site_category_lv2**: the second level category for the product on the site where the review is being submitted.
+* **review_title**: the title of the review.
+* **overall_rating**: the overall star rating given by the reviewer on a scale of 1 to 5.
+* **recommend_to_a_friend**: whether or not the reviewer would recommend the product to a friend (Yes/No).
+* **review_text**: the full text of the review.
+* **reviewer_birth_year**: the birth year of the reviewer.
+* **reviewer_gender**: the gender of the reviewer (F/M).
+* **reviewer_state**: the Brazilian state of the reviewer (e.g. RJ).
 
 ### Data Splits
 
@@ -74,4 +87,4 @@ Since B2W-Reviews01 offers the exact text written by users, this corpus also off
 
 ### Contributions
 
-[More Information Needed]
+Thanks to [@ruanchaves](https://github.com/ruanchaves) for adding this dataset.