Integrated vs. segregated means two contrasting types of spatial layouts, the former indicating all spaces are close to all others, and the latter meaning all spaces are far away from all others.
Integrated vs segregated
Hillier, B. & Hanson, J. (1984), The Social Logic of Space, Cambridge University Press: Cambridge. pp.16;
Hillier, B. (1996, 2007), Space is the Machine: A Configurational Theory of Architecture. Space Syntax: London, UK. pp.25-26