Upload README.md

README.md

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+# AmazonBooks_m1
+
++ **Data format:**  
+user_id item1 item2 ...
+
++ **Download:** https://huggingface.co/datasets/reczoo/AmazonBooks_m1/tree/main
++ **Repository:** https://github.com/reczoo/Datasets/tree/main/Amazon
+
++ **Used by papers:** 
+    - Xiangnan He, Kuan Deng, Xiang Wang, Yan Li, Yongdong Zhang, Meng Wang. [LightGCN: Simplifying and Powering Graph Convolution Network for Recommendation](https://arxiv.org/abs/2002.02126). In SIGIR 2020.
+    - Kelong Mao, Jieming Zhu, Jinpeng Wang, Quanyu Dai, Zhenhua Dong, Xi Xiao, Xiuqiang He. [SimpleX: A Simple and Strong Baseline for Collaborative Filtering](https://arxiv.org/abs/2109.12613). In CIKM 2021.
+    - Kelong Mao, Jieming Zhu, Xi Xiao, Biao Lu, Zhaowei Wang, Xiuqiang He. [UltraGCN: Ultra Simplification of Graph Convolutional Networks for Recommendation](https://arxiv.org/abs/2110.15114). In CIKM 2021.
+
++ **Check the md5sum for data integrity:**
+    ```bash
+    $ md5sum *.txt
+    5b1125ef3bf4118a7988f1fd8ce52ef9  item_list.txt
+    30f8ccfea18d25007ba9fb9aba4e174d  test.txt
+    c916ecac04ca72300a016228258b41ed  train.txt
+    132f8a5d6d35d5fdde1e0396488be235  user_list.txt
+    ```