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by pcwalton 1507 days ago
The Burrows-Wheeler transform, which was the main innovation of bzip2 over gzip, and which this bzip3 retains, is one of the most fascinating algorithms to study: https://en.wikipedia.org/wiki/Burrows-Wheeler_transform

It hasn't been used lately because of the computational overhead, but it's interesting and I'm glad that there's still work in this area. For anyone interested in algorithms it's a great one to wrap your head around.