Qadir, A., Mendes, P., Gruhl, D. and Lewis, N. 2015. Semantic Lexicon Induction from Twitter with Pattern Relatedness and Flexible Term Length. Proceedings of the AAAI Conference on Artificial Intelligence. 29, 1 (Feb. 2015). DOI:https://doi.org/10.1609/aaai.v29i1.9519.