Multimodal Fusion with LLMs for Engagement Prediction in Natural Conversation. - Cheng Charles Ma; Kevin Hyekang Joo; Alexandria K. Vail; Sunreeta Bhattacharya; Alvaro Fernandez Garcia; Kailana Baker-Matsuoka; Sheryl Mathew; Lori L. Holt; Fernando De la Torre (CoRR, 2024)