Seo, P. H., P. Sharma, T. Levinboim, B. Han, and R. Soricut. “Reinforcing an Image Caption Generator Using Off-Line Human Feedback”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 34, no. 03, Apr. 2020, pp. 2693-00, doi:10.1609/aaai.v34i03.5655.