Bridging the training-inference gap for dense phrase retrieval via unified loss and hard negatives mined through efficient subcorpus validation - ___[Findings of EMNLP 2022](https://2022.emnlp.org)___ · ___[SustaiNLP @ EMNLP 2022](https://sites.google.com/view/sustainlp2022)___ · ___[KRLM @ ICML 2022](https://knowledge-retrieval-workshop.github.io)___