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Leiden Algorithm: Hierarchical Community Detection
Partitions knowledge graphs into densely connected communities
Level 0 (Root): Entire Graph
Level 1: Space Technology
Level 1: EV Industry
Level 2: SpaceX Ops
SpaceX
Starship
Level 2: NASA Programs
NASA
Artemis
Level 2: Tesla Products
Tesla
Model X
Level 2: EV Market
EVs
Batteries
Key Properties
Each entity belongs to exactly ONE leaf community
Entities within a community are densely connected
Communities form a hierarchical tree structure
Higher levels = coarser groupings (fewer communities)
Lower levels = finer groupings (more specificity)
Level 0
Level 1
Level 2 (Leaf)
Entities