knowledge_graph_research

Research of Knowledge Graphs

Install

ClickHouse

Knowledge Graph sources

CaLiGraph

• 125M links
• 2 GB in Clickhouse
• 20 GB in nt files
• 1.3 GB in archive

Wikidata

Database download Dumps (Truthy RDF file)

• 5,556M links
• 43 GB in Clickhouse
• 41 GB in archive

Knowledge Graph processing

Upload RDF standard Knowledge Graphs to Clickhouse (nt files)

Process Raw Knowledge Graphs in Clickhouse

Bostrom

Graph extraction

• install and synchronize cyberindex
• install postgresql client

sudo apt-get install postgresql-client

• connect to the Bostrom index database

psql --host=localhost --username=default --dbname=cyberd

• export data of the cyberlink table:

\copy cyberlink to 'cyberlink.csv' csv header

Upload Knowledge Graph to Bostrom network

Upload Content-Type and Type-Content Subgraphs