Lexical Knowledge Structures

YAGO Model: Formal view
common entities : which are neither facts nor relations.
E.g.# : singer, person, Elvis Presley
individuals : common entities which are not classes. E.g.# :
Elvis Presley
Its a reification graph. defined over
set of common entities nodes C,
set of edge identifiers I
set of relation names R
reification graph is an injective total function
G C,I ,R : I → (C ∪ I ) × R × (C ∪ I )
A K Nirala
Lexical Knowledge Structures