Fractals are used in one method of doing this with images, while a more notable method improves on an algorithm developed by Shannon and Fano.
Benchmarks for these operations include the Calgary and Cambridge corpuses, tests in which the PAQ algorithm performs efficiently but slowly. Fractals are used in one method of doing this with images, while a more notable method improves on an algorithm developed by Shannon and Fano. A dictionary is created to perform this action in a method named for Lempel, Ziv and Welch, which contrasts with the prefix code used in (*) Huffman coding. A destructive form of it is used in the MPEG format; that is the "lossy" version of this process. For 10 points, identify this process of shrinking data, exemplified by RAR and ZIP formats.
Benchmarks for these operations include the Calgary and Cambridge corpuses, tests in which the PAQ algorithm performs efficiently but slowly.
data {compression} [accept {lossless data compression} before “{MPEG}” is read; prompt on {coding} before mentioned]