* TLDR: By pretraining on (automatically extracted) citation sentences
in scientific papers, we achieve SOTA on SciTLDR, XSum, and Gigaword in
zero-shot and/or few-shot settings Access Paper or Ask Questions
* TLDR: Reranking retrieved passages by reader predictions can achieve
10~20 gains in top-1 retrieval accuracy and 1~4 gains in Exact Match (EM)
without any training Access Paper or Ask Questions