ํ”ผ๋“œ๋กœ ๋Œ์•„๊ฐ€๊ธฐ
Stop Losing Your Health Data! Build a Lifelong Electronic Health Record (EHR) System with Neo4j and GraphRAG ๐Ÿฅ๐Ÿ’ป
Dev.toDev.to
AI/ML

Neo4j์™€ GraphRAG๋ฅผ ํ†ตํ•œ ๋น„์ •ํ˜• ์˜๋ฃŒ ๋ฐ์ดํ„ฐ์˜ Knowledge Graph ๊ตฌ์กฐํ™” ๋ฐ ์ถ”์  ๊ฐ€๋Šฅ์„ฑ ํ™•๋ณด

Stop Losing Your Health Data! Build a Lifelong Electronic Health Record (EHR) System with Neo4j and GraphRAG ๐Ÿฅ๐Ÿ’ป

wellallyTech2026๋…„ 4์›” 23์ผ5๋ถ„intermediate

Context

PDF์™€ ์ด๋ฏธ์ง€ ๋“ฑ ํŒŒํŽธํ™”๋œ ๋น„์ •ํ˜• ์˜๋ฃŒ ๋ฐ์ดํ„ฐ์˜ ํŠน์„ฑ์œผ๋กœ ์ธํ•œ ๊ฒ€์ƒ‰ ํšจ์œจ ์ €ํ•˜ ๋ฐ ์ปจํ…์ŠคํŠธ ๋‹จ์ ˆ ๋ฐœ์ƒ. ๋‹จ์ˆœ ํ‚ค์›Œ๋“œ ๊ฒ€์ƒ‰์ด๋‚˜ Vector DB ๊ธฐ๋ฐ˜ RAG๋งŒ์œผ๋กœ๋Š” ์˜๋ฃŒ ๊ธฐ๋ก ๊ฐ„์˜ ๋ณต์žกํ•œ ๊ด€๊ณ„์„ฑ ํŒŒ์•…๊ณผ ์‹œ๊ณ„์—ด์  ์ธ๊ณผ๊ด€๊ณ„ ๋ถ„์„์— ํ•œ๊ณ„ ์กด์žฌ.

Technical Solution

  • Unstructured.io๋ฅผ ํ™œ์šฉํ•œ ๋ณต์žกํ•œ ๋ ˆ์ด์•„์›ƒ์˜ PDF ๋‚ด ํ…Œ์ด๋ธ” ๋ฐ ํ…์ŠคํŠธ ๋ฐ์ดํ„ฐ ์ •๋ฐ€ ์ถ”์ถœ
  • GPT-4o ๊ธฐ๋ฐ˜์˜ LLMGraphTransformer๋ฅผ ํ†ตํ•œ Patient, Condition, Medication ๋“ฑ ํ•ต์‹ฌ Entity ๋ฐ ๊ด€๊ณ„ ์ •์˜
  • ์ถ”์ถœ๋œ ๋ฐ์ดํ„ฐ๋ฅผ Neo4j Graph Database์— ์ €์žฅํ•˜์—ฌ ์˜๋ฃŒ ๋ฐ์ดํ„ฐ ๊ฐ„์˜ ๊ด€๊ณ„๋ฅผ ๋ช…์‹œ์  Edge๋กœ ์—ฐ๊ฒฐํ•œ Knowledge Graph ๊ตฌ์ถ•
  • LlamaIndex์˜ PropertyGraphIndex๋ฅผ ๋„์ž…ํ•˜์—ฌ Graph-traversal ๊ธฐ๋ฐ˜์˜ GraphRAG ์—”์ง„ ๊ตฌํ˜„
  • LabResult โ†’ Date โ†’ Condition โ†’ Medication์œผ๋กœ ์ด์–ด์ง€๋Š” ๊ฒฝ๋กœ ํƒ์ƒ‰์„ ํ†ตํ•œ ๋ณต์žกํ•œ ์ฟผ๋ฆฌ ํ•ด๊ฒฐ ๋ฐ ์‘๋‹ต์˜ Traceability ํ™•๋ณด
  • ๋‹จ์ˆœ Vector ๊ฒ€์ƒ‰์˜ ํ•œ๊ณ„๋ฅผ ๊ทน๋ณตํ•˜๊ธฐ ์œ„ํ•ด ๊ตฌ์กฐํ™”๋œ Graph ์†์„ฑ์„ ์ง์ ‘ ์ฐธ์กฐํ•จ์œผ๋กœ์จ LLM์˜ Hallucination ์–ต์ œ

- ๋‹จ์ˆœ Vector DB ๋Œ€๋น„ ๊ด€๊ณ„ ์ถ”๋ก ์ด ํ•„์š”ํ•œ ๋„๋ฉ”์ธ(์˜๋ฃŒ, ๋ฒ•๋ฅ  ๋“ฑ)์—์„œ GraphRAG ๋„์ž… ๊ฒ€ํ†  - LLMGraphTransformer ์‚ฌ์šฉ ์‹œ allowed_nodes์™€ allowed_relationships๋ฅผ ๋ช…ํ™•ํžˆ ์ •์˜ํ•˜์—ฌ ์Šคํ‚ค๋งˆ ์ผ๊ด€์„ฑ ์œ ์ง€ - ์‹ค๋ฌด ์ ์šฉ ์‹œ 'Vitamin D'์™€ 'Vit D3' ๊ฐ™์€ ๋™์ผ ๊ฐœ์ฒด๋ฅผ ํ†ตํ•ฉํ•˜๋Š” Entity Resolution ์ „๋žต ์ˆ˜๋ฆฝ ํ•„์š” - ์‘๋‹ต์˜ ์‹ ๋ขฐ์„ฑ ํ™•๋ณด๋ฅผ ์œ„ํ•ด ์ตœ์ข… ๋‹ต๋ณ€์— ๊ธฐ๋ฐ˜์ด ๋œ Graph Node์™€ Edge์˜ Source Citation ํฌํ•จ ์„ค๊ณ„

์›๋ฌธ ์ฝ๊ธฐ