Yoshida, Y., Hirao, T., Iwata, T., Nagata, M. and Matsumoto, Y. (2011) “Transfer Learning for Multiple-Domain Sentiment Analysis — Identifying Domain Dependent/Independent Word Polarity”, Proceedings of the AAAI Conference on Artificial Intelligence, 25(1), pp. 1286-1291. doi: 10.1609/aaai.v25i1.8081.