Data Compression III: Assigning Variable-Length Code
Principle: Assign short codes to the most frequent occurring values and long ones to the least frequent ones.
The code-size cannot be fully optimized as one wants codes to occur in succession, without delimiters between them, and still be recognized.
This is the principle used in the Morse Code
As well, it is used in Huffman Coding. ==> Used for compression in Unix (see slide 9).