In the video “Harvard Presents NEW Knowledge-Graph AGENT (MedAI)” by Discover AI, the host discusses a new knowledge graph agent called KGARevion developed by Harvard to improve AI applications in medicine. The agent aims to address challenges faced by large language models (LLMs) in accurately retrieving and integrating medical knowledge. The video highlights the importance of combining structured knowledge from knowledge graphs with the unstructured knowledge of LLMs to enhance reasoning performance, particularly in complex medical interactions. The KGARevion methodology involves generating triplets from medical queries, validating them against knowledge graphs, and refining them to ensure accuracy. The host emphasizes the potential of this approach to revolutionize medical AI systems and improve decision-making in healthcare.