Why it matters

BWT enables efficient compression + search. Understanding shapes text processing.

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The architecture

Cyclic rotations + sort.

Last column = BWT.

Move-to-front + RLE + entropy code output.

Reversible via LF-mapping.

BWT compression pipelineCyclic rotationssort lexicographicallyLast columnBWT outputMTF + RLE + entropycompression pipelinebzip2 uses BWT + MTF + RLE + Huffman; FM-index for searchable compressed text
BWT deep.
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How it works end to end

Burrows + Wheeler 1994.

bzip2 combines with MTF + RLE + Huffman.

FM-index for search.