A Neural Generative Model for Joint Learning Topics and Topic-Specific Word Embeddings Lixing Zhu author Yulan He author Deyu Zhou author 2020 text journal article Transactions of the Association for Computational Linguistics continuing MIT Press Cambridge, MA periodical academic journal zhu-etal-2020-neural 10.1162/tacl_a_00326 https://aclanthology.org/2020.tacl-1.31/ 2020 8 471 485