TY JOUR TI Impact of Parameter-To-Data Ratio on LLM Fine-Tuning in Russian Text Classification Tasks KW LLM KW fine-tuning KW XLM-RoBERTa KW Russian-language datasets KW text classification KW sentiment KW topic classification JO Virtual Communication and Social Networks AU Shamigov, F.F. PY 2025 IS 4 PB Kemerovo State University