A graph that represents social relations between entities.
"Facebook's worst nightmare is a static social graph," he said. "If users aren't adding very many new friends or connections, then their personal network becomes less and less active over time.2013 January 16, Josh Halliday, quoting Marc Zuckerberg, “Graph Search: Zuckerberg hopes Facebook's 'third pillar' will halt user decline”, in The Guardian:
A graph that represents social relations between entities.