LZRW

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Omnipaedista (talk | contribs) at 20:32, 16 July 2013 (edited formatting). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Lempel–Ziv Ross Williams (LZRW) refers to variants of the LZ77 lossless data compression algorithms with an emphasis on improving compression speed through the use of hash tables and other techniques. This family was explored by Ross Williams, who published a series of algorithms[1] beginning with LZRW1 in 1991.

The variants are:

  • LZRW1[2]
  • LZRW1-A
  • LZRW2
  • LZRW3
  • LZRW3-A
  • LZRW4
  • LZRW5

The LZJB algorithm used in ZFS is derived from LZRW1.

Notes

  1. ^ Williams, Ross. LZRW1. May 16 2005.
  2. ^ Williams, R.N., "An Extremely Fast Ziv-Lempel Data Compression Algorithm", Data Compression Conference 1991 (DCC'91), 8-11 April, 1991, Snowbird, Utah, pp.362-371