“…The yes/no QA task can be intuitively formatted as a binary classification problem, where the input should include the question and the context, and the answer is either yes or no. Feature-based approaches (Somasundaran et al, 2007;Oh et al, 2012) have been investigated over a decade ago, and recently proposed solutions mostly employ deep neural structures (Ye et al, 2019), along with transfer learning (Jin et al, 2019) to optimize the usage of domain knowledge. Pre-trained models, such as ELMo (Peters et al, 2018), ELECTRA (Clark et al, 2020), BERT (Devlin et al, 2018), and its variants (Jin et al, 2019;Liu et al, 2019), have shown superior performance and refreshed the SOTA records.…”