Stable Topic Modeling with Local Density Regularization. - Sergei Koltcov; Sergey I. Nikolenko; Olessia Koltsova; Vladimir Filippov; Svetlana Bodrunova (INSCI, 2016)

Topic models with elements of neural networks: investigation of stability, coherence, and determining the optimal number of topics. - Sergei Koltcov; Anton Surkov; Vladimir Filippov; Vera Ignatenko (PeerJ Comput. Sci., 2024)