Add link to code repository

This PR adds a link to the code repository mentioned in the paper.

README.md

@@ -1,4 +1,7 @@
 ---
+license: cc-by-nc-4.0
+task_categories:
+- text-generation
 dataset_info:
 - config_name: Books
   features:
@@ -55,9 +58,6 @@ configs:
   data_files:
   - split: full
     path: Movies_and_TV/full-*
-license: cc-by-nc-4.0 # Assuming a CC-BY-NC-4.0 license based on common practice.  Verify!
-task_categories:
-- text-generation
 ---
 
 # Difference-aware Personalized Learning (DPL) Dataset
@@ -68,6 +68,8 @@ This dataset is used in the paper:
 > 
 > Yilun Qiu, Xiaoyan Zhao, Yang Zhang, Yimeng Bai, Wenjie Wang, Hong Cheng, Fuli Feng, Tat-Seng Chua
 
+Code: https://github.com/SnowCharmQ/DPL
+
 ![image/png](https://cdn-uploads.huggingface.co/production/uploads/67242d62055ce33014cf24d5/j2lG852s2qTk8A3bg9zVg.png)
 
 This dataset is an adaptation of the Amazon Reviews'23 dataset.  It contains item metadata for Books, CDs & Vinyl, and Movies & TV.  Each item includes title, description, and asin.