Data compression

Topic history | v1 (current) | created by jjones

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Data compression

| created by jjones | Add topic "Asymmetric numeral systems"
Title
Data compression
Description
In signal processing, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder. The process of reducing the size of a data file is often referred to as data compression. In the context of data transmission, it is called source coding; encoding done at the source of the data before it is stored or transmitted.
Link
https://en.wikipedia.org/?curid=8013

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subtopic of Computer science
v1 | attached by jjones | Add topic "Asymmetric numeral systems"
parent of Asymmetric numeral systems
v1 | attached by jjones | Add topic "Asymmetric numeral systems"
parent of Arithmetic coding
v1 | attached by janarez | Add topic "Arithmetic coding"
parent of Huffman coding
v1 | attached by janarez | Add topic "Huffman coding"
parent of Noisy-channel coding theorem
v1 | attached by janarez | Add topic "Huffman coding"
has important | uses Information theory
v1 | attached by janarez | Add topic "Information theory"