text: Q:
  
  Which coding trees you know about?
  
  I have read and understood huffman coding to some extent. 
  I did some googling but was unable to find other coding TREES.
  I need to make comparision of HuffMan coding TREE with other coding TREES.
  All I need are names of coding trees and if u can provide there small description it would be really helpful..
  regards,
  Aqif
  
  A:
  
  Shannon-Fano was a predecessor of Huffman coding (Fano was Huffman's professor).
  Hu-Tucker is another method.
  Context tree weighting method (CTW) is a lossless compression and prediction algorithm.
  WBTC (wavelet block tree coder) algorithm is used for image coding.
  Block-zero tree coding (BZTC) algorithm is also used for image coding.
  Some of these are in Wikipedia, and some from plain old Google searching.
  
  