Howtosignalprocessing
- What is the best compression algorithm for text?
- What is the most efficient compression algorithm?
- Is there a perfect compression algorithm?
- What is the most efficient lossless compression algorithm?
What is the best compression algorithm for text?
One commonly used compression algorithm is Huffman coding [Huf52], which makes use of information on the frequency of characters to assign variable-length codes to characters. If shorter bit sequences are used to identify more frequent characters, then the length of the total sequence will be reduced.
What is the most efficient compression algorithm?
The Lempel–Ziv (LZ) compression methods are among the most popular algorithms for lossless storage. DEFLATE is a variation on LZ optimized for decompression speed and compression ratio, but compression can be slow.
Is there a perfect compression algorithm?
No. It can be proven that there is not even an algorithm to determine how well a perfect compressor will do. See Kolmogorov Complexity. Huffman coding (or arithmetic coding) by itself does not get close to the best compression.
What is the most efficient lossless compression algorithm?
The most successful compressors are XM and GeCo. For eukaryotes XM is slightly better in compression ratio, though for sequences larger than 100 MB its computational requirements are impractical.
