참고
[1] Holtzman, Ari, et al. “Surface Form Competition: Why the Highest Probability Answer Isn’t Always Right.” arXiv preprint arXiv:2104.08315 (2021).

[2] Raffel, Colin, et al. “Exploring the limits of transfer learning with a unified text-to-text transformer.” J. Mach. Learn. Res. 21.140 (2020): 1-67.

[3] Asai, Akari, et al. “Learning to retrieve reasoning paths over Wikipedia graph for question answering.” arXiv preprint arXiv:1911.10470 (2019).

[4] Xiong, Wenhan, et al. “Answering complex open-domain questions with multi-hop dense retrieval.” arXiv preprint arXiv:2009.12756 (2020).

[5] Dhingra, Bhuwan, et al. “Differentiable reasoning over a virtual knowledge base.” arXiv preprint arXiv:2002.10640 (2020).