Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Heterogeneous information network schema. The specified knowledge is represented in the form of heterogeneous information network. The schema contains multiple entity types: document 𝒟, word 𝒲, named entities , and the relation types connecting the entity types.
