Knowledge Graph

wojciech achtelik
Wojciech Achtelik
AI Engineer Lead
July 4, 2025
Glossary Category

Knowledge Graph is a structured representation of interconnected entities, relationships, and semantic information that enables AI systems to store, organize, and reason about complex domain knowledge through graph-based data structures. This powerful knowledge representation framework consists of nodes representing entities such as people, places, concepts, or objects, connected by edges that define relationships, attributes, and semantic associations between these entities. Knowledge graphs incorporate ontologies, taxonomies, and schema definitions that provide formal semantics and enable automated reasoning, inference, and knowledge discovery processes. Implementation approaches include Resource Description Framework (RDF) triples, property graphs, and hybrid architectures that support both structured and unstructured data integration. Advanced knowledge graphs utilize machine learning techniques for entity resolution, relationship extraction, and automated knowledge base construction from diverse data sources including text, databases, and APIs. These systems are essential for enhancing AI agent reasoning capabilities, supporting natural language understanding, enabling semantic search, and facilitating explainable AI through structured knowledge representation. Effective knowledge graphs enable AI systems to perform complex reasoning tasks, answer sophisticated queries, and provide contextual understanding that goes beyond traditional database capabilities.