runnable, but slow and unvalidated yet

Author: pmixer

.gitignore

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+.DS_Store
+__pycache__/
+*_default/
+*.pickle

README.md

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+modified based on [paper author's tensorflow implementation](https://github.com/JiachengLi1995/TiSASRec), switching to PyTorch(v1.6) for simplicity, executable by:
+
+```python main.py --dataset=ml-1m --train_dir=default```
+
+pls check paper author's [repo](https://github.com/JiachengLi1995/TiSASRec) for detailed intro and more complete README, and here's paper bib FYI :)
+
+```
+@inproceedings{li2020time,
+  title={Time Interval Aware Self-Attention for Sequential Recommendation},
+  author={Li, Jiacheng and Wang, Yujie and McAuley, Julian},
+  booktitle={Proceedings of the 13th International Conference on Web Search and Data Mining},
+  pages={322--330},
+  year={2020}
+}
+```