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KGARevision: A Knowledge Graph-Based Agent for Medical AI Question Answering

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Overview

Explore a research presentation detailing Harvard's innovative KGARevion system, a knowledge graph-based agent designed to enhance medical AI performance. Learn how this groundbreaking approach addresses the limitations of traditional Retrieval-Augmented Generation (RAG) in medicine by combining Large Language Models' knowledge with structured medical knowledge graphs. Understand the complete workflow from the generation of medical triplets through multiple embedding alignments to dynamic knowledge graph updates. Discover detailed implementation steps, including the review phase, embedding alignment in common mathematical space, and the revision process for incomplete triplets. Examine performance analyses and gain access to detailed prompts used in the KGARevion system, making complex medical AI interactions more accurate and comprehensive. Perfect for both AI practitioners and beginners interested in the intersection of artificial intelligence and medical knowledge systems.

Syllabus

Harvard has a problem w/ LLMs and RAG
Harvard Univ develops a new solution
The Generate Phase medical triplets
Review Phase of KGARevion
Multiple embeddings from LLM and Graphs
Alignment of all embeddings in common math space
Dynamic update of the Knowledge graph
Update LLM with grounded graph knowledge
Revise phase to correct incomplete triplets
Answer phase brings it all together
Summary
Performance analysis
All prompts for KGARevion in detail

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