Babylon Health's Medical Knowledge Graph - Why, What, and How.

Babylon Health offers digital healthcare services through a mobile application. Besides video consultations with doctors, the app is equipped with a chatbot able to provide medical information and perform triage. To realise this digital healthcare experience, various services within Babylon generate, exchange, and consume health data and clinical knowledge. For example, text understanding services process the user’s chatbot input and recognise relevant medical terms therein. These terms may need to be matched with predefined symptoms and risk factors that form the input to the triaging engine, or with past diagnoses stored in user profiles. Furthermore, consultation notes are labelled with clinical codes to allow for easy processing and retrieval. To ensure that a uniform medical terminology is used throughout Babylon’s services and to allow reasoning over medical data, a large medical knowledge graph was created [1], realised as the materialisation of an RDF triple store.