metagraph

• a graph of graphs
• each node in a metagraph represents an entire graph or a complex substructure within a larger system
• edges represent relationships between these component graphs — connections, interactions, dependencies

• properties

  • hierarchical: each level of the metagraph represents a different level of abstraction
  • composable: subgraphs can be treated as single nodes and analyzed at higher levels
  • multi-scale: the same system can be viewed at different resolutions

• in cyber

  • metagraph describes the multi-scale view: crystal (the seed graph), the cybergraph (on-chain), and the network of cybergraphs
  • see crystal for the seed knowledge graph specification
  • see about this metagraph for the story behind this logseq graph

• applications

  • machine learning: model architectures as graphs of computational subgraphs
  • network theory: analyze networks of networks
  • computational biology: metabolic pathways as graphs within cellular graphs
  • knowledge graph: ontologies that reference and compose other ontologies