Upload README.md

README.md

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+# CiteUlikeA_m1
+
++ **Data format:**  
+user_id item1 item2 ...
+
++ **Source:** http://www.citeulike.org
++ **Download:** https://huggingface.co/datasets/reczoo/CiteUlikeA_m1/tree/main
++ **RecZoo Datasets:** https://github.com/reczoo/Datasets
+
++ **Used by papers:** 
+    - Shuyi Ji, Yifan Feng, Rongrong Ji, Xibin Zhao, Wanwan Tang, Yue Gao. [Dual Channel Hypergraph Collaborative Filtering](https://dl.acm.org/doi/10.1145/3394486.3403253). In KDD 2020.
+    - Kelong Mao, Jieming Zhu, Jinpeng Wang, Quanyu Dai, Zhenhua Dong, Xi Xiao, Xiuqiang He. [SimpleX: A Simple and Strong Baseline for Collaborative Filterin](https://arxiv.org/abs/2109.12613). In CIKM 2021.
+
++ **Check the md5sum for data integrity:**
+    ```bash
+    $ md5sum *.txt
+    c9d2de139ac69d480264b6221a567324  test.txt
+    f037c7ac8f9d8142bb5fd137ff61ad0c  train.txt
+    ```