1.
Nokel M, Loukachevitch N. Topic models: adding bigrams and taking account of the similarity between unigrams and bigrams. Num. Meth. Prog. [Internet]. 2015 Apr. 30 [cited 2025 Dec. 14];16(44):215-34. Available from: https://en.num-meth.ru/index.php/journal/article/view/828