This is my favourite paper on the different indexing (blocking) techniques - http://users.cecs.anu.edu.au/~Peter.Christen/publications/christen2011indexing.pdf

This is my favourite paper on the different indexing (blocking) techniques - http://users.cecs.anu.edu.au/~Peter.Christen/publications/christen2011indexing.pdf http://users.cecs.anu.edu.au/~Peter.Christen/publications/ch... Very easy to read and explains the tradeoffs of the algorithms