 Citations  ```bibtex @misc{izacard2021contriever,     title={Unsupervised Dense Information Retrieval with Contrastive Learning},      author={Gautier Izacard and Mathilde Caron and Lucas Hosseini and Sebastian Riedel and Piotr Bojanowski and Armand Joulin and Edouard Grave},     year={2021},     url = {https://arxiv.org/abs/2112.09118},     doi = {10.48550/ARXIV.2112.09118}, } ```  ```bibtex @article{pile,     title={The {P}ile: An 800GB Dataset of Diverse Text for Language Modeling},     author={Gao, Leo and Biderman, Stella and Black, Sid and Golding, Laurence and Hoppe, Travis and Foster, Charles and Phang, Jason and He, Horace and Thite, Anish and Nabeshima, Noa and Presser, Shawn and Leahy, Connor},     journal={arXiv preprint arXiv:2101.00027},     year={2020} } ```