AI Glossary
Knowledge Graph
What is Knowledge Graph?
A structured representation of information as entities (nodes) and relationships (edges), used to represent factual knowledge in a machine-readable form. Knowledge graphs can be used to supplement LLMs with reliable structured facts — reducing hallucination risk in fact-sensitive applications. Notable examples include Google's Knowledge Graph and Wikidata.
Example in practice
A pharmaceutical company that connects drug names, compounds, side effects, and clinical studies in a knowledge graph can use it to ground their AI research assistant — ensuring it retrieves verified facts rather than generating plausible-sounding fiction.
Learn more
See Knowledge Graph applied in a professional context through this free course.
AI Fundamentals for Professionals →