Linear Algebraic Structure of Word Senses, with Applications to Polysemy Sanjeev Arora author Yuanzhi Li author Yingyu Liang author Tengyu Ma author Andrej Risteski author 2018 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal arora-etal-2018-linear 10.1162/tacl_a_00034 https://aclanthology.org/Q18-1034/ 2018 6 483 495