“…Yet, despite their practicality, very few studies have used domain adaptation methods on the lowresource scenario for the abstractive summarization task. To address this research gap, we present AdaptSum, the first benchmark to simulate the low-resource domain Adaptation setting for abstractive Summarization systems with a combination of existing datasets across six diverse domains (dialog (Gliwa et al, 2019), email (Zhang and Tetreault, 2019), movie review (Wang and Ling, 2016), debate (Wang and Ling, 2016), social media (Kim et al, 2019), and science (Yasunaga et al, 2019)), and for each domain, we reduce the number of training samples to a small quantity so as to create a low-resource scenario.…”