TY - JOUR AU - M. A. Nokel AU - N. V. Lukashevich TI - Topic models: adding bigrams and taking account of the similarity between unigrams and bigrams JO - Numerical methods and programming PY - 2015 SP - 215 EP - 234 VL - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMP_2015_16_2_a4/ LA - ru ID - VMP_2015_16_2_a4 ER -