Hierarchical Lexical Graph

Three-Layer Knowledge Graph

Connects three layers of organisational knowledge: the semantic layer (org structure and processes), the lexical layer (document hierarchy), and the domain layer (extracted entities, chunks, and communities).

Layers

Semantic layer — organisational hierarchy and processes:

Org/Division → Department → Process → Step

Lexical layer — document structure:

Chapter → Article → Document
Connected to semantic layer via NEXT_SECTION from Step

Domain layer — extracted knowledge:

Chunk → Entity → Community
Connected to lexical layer via FIRST_CHUNK / NEXT_CHUNK

Key Relationships

Relationship	Purpose
`IN_DEPARTMENT`	Process belongs to a department
`PROCESS_GUIDELINES`	Step implements a process
`FIRST_CHUNK` / `NEXT_CHUNK`	Chunk sequence within a chapter
`SIMILAR`	Semantic similarity between chunks
`HAS_ENTITY`	Entity extracted from a chunk
`IN_COMMUNITY`	Entity belongs to a detected community