Editing Lempel–Ziv–Welch (section)

==Further coding==
The simple scheme described above focuses on the LZW algorithm itself.  Many applications apply further encoding to the sequence of output symbols.  Some package the coded stream as printable characters using some form of [[binary-to-text encoding]]; this increases the encoded length and decreases the compression rate.  Conversely, increased compression can often be achieved with an ''adaptive entropy encoder''. Such a coder estimates the probability distribution for the value of the next symbol, based on the observed frequencies of values so far.  A standard entropy encoding such as [[Huffman coding]] or [[arithmetic coding]] then uses shorter codes for values with higher probabilities.