Knowledge Graph Toolkit

• hasRepository https://github.com/usc-isi-i2/kgtk/

• hasCon

• hasFeature

  • A notable feature of KGTK is that edges are also nodes
    • hasSource https://kgtk.readthedocs.io/en/latest/data_model/
  • KGTK represents KGs using TSV files with 4 columns labeled id, node1, label and node2
    • id column is a symbol representing an identifier of an edge
  • Given that edges are nodes, it is possible to define edges that connect edges to other nodes, as illustrated using the blue arrows.

• canImportFrom

  • Tab-Separted Values

• vs

  • Property Graph
    • The KGTK model is a generalization of property graphs because the attribute/value pairs are also edges: the attributes are relations and the values can be arbitrary nodes.
  • Semantic Graph
    • To represent edges about edges, RDF uses reification, typically done using rdf:Statement, where the edges are represente using three triples. The KGTK representation is simpler as it does not require the creation of extra triples to represent the edges.

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Backlinks

• Edges Are Also Nodes