Optimization of Customer Feedback Summarization Using Large Language Models (LLM) and Advanced Retrieval-Augmented Generation. - Buchepalli Praneeth; Mohana; Eshitha Chowdary Nattem; Kamala Jetti; B. K. Kavyashree; D. Rakshitha; P. Ramakanth Kumar; K. Sreelakshmi (IEEE Access, 2025)