“…Modern classifiers typically rely on large amount of training data. Collecting large training sets is expensive and in some cases very challenging, e.g., in legal domain (Holzenberger, Blair-Stanek, and Van Durme 2020) or in social media domain (Karisani, Choi, and Xiong 2021;Karisani and Karisani 2020). There exist several techniques to address the lack of training data, one of which is Domain Adaptation (Ben-David and Schuller 2003), where a classifier is trained in one domain (the source domain) and evaluated in another domain (the target domain).…”