What are the three techniques used for lossless compression? - Compression Standard

What are the three techniques used for lossless compression?

Huffman Coding:

- An entropy encoding algorithm.

- It uses variable length code table for encoding source symbol.

Shannon Fano Coding:

- It is used to construct a prefix code that is based on a set of symbols.

- It suboptimal. The lowest expected code word length will not be achieved.

Arithmetic Coding:

- A variable-length entropy encoding form.

- It is used for implementing loss less data compression.

- Fewer bits are occupied when frequently used characters are represented. More bits are occupied when not-so-frequently used characters are represented.