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этимология

Что (кто) такое key compression - определение

CONCEPT IN COMPUTER DATA COMPRESSION

Asymmetric compression; Symmetric compression

Key (music)

TONIC NOTE AND CHORD OF A MUSICAL PIECE

Major key; Key (Music); Musical key; Major Key; Key of D; Musical keys; Key coloration; Key relationship; Musical Key; Music key; Minor-key; Minor–key; Major-key; Key of E

In music theory, the key of a piece is the group of pitches, or scale, that forms the basis of a musical composition in classical, Western art, and Western pop music.

https://en.wikipedia.org/wiki/Key_(music)

Key (cryptography)

PIECE OF INFORMATION IN CRYPTOGRAPHY

Cryptography/Key; Secret key; Encryption key; Cryptographic keys; Cryptographic key; Key (cryptology); Cryptovariable; Cryptovariables

A key in cryptography is a piece of information, usually a string of numbers or letters that are stored in a file, which, when processed through a cryptographic algorithm, can encode or decode cryptographic data. Based on the used method, the key can be different sizes and varieties, but in all cases, the strength of the encryption relies on the security of the key being maintained.

https://en.wikipedia.org/wiki/Key_(cryptography)

lossy

DATA COMPRESSION APPROACH THAT RESULTS IN LOSS OR CHANGE OF SOME DATA

Lossy; Lossy encoding; Lossy data compression; Data compression/lossy; List of lossy compression methods; Irreversible compression

<algorithm> A term describing a data compression algorithm which actually reduces the amount of information in the data, rather than just the number of bits used to represent that information. The lost information is usually removed because it is subjectively less important to the quality of the data (usually an image or sound) or because it can be recovered reasonably by interpolation from the remaining data. MPEG and JPEG are examples of lossy compression techniques. Opposite: lossless. (1995-03-29)

Википедия

Data compression symmetry

Symmetry and asymmetry, in the context of data compression, refer to the time relation between compression and decompression for a given compression algorithm.

If an algorithm takes the same time to compress a data archive as it does to decompress it, it is considered symmetrical. Note that compression and decompression, even for a symmetric algorithm, may not be perfectly symmetric in practice, depending on the devices the data is being copied to and from, and other factors such as latency and the fragmentation on the device.

In turn, if the compression and decompression times of an algorithm are vastly different, it is considered asymmetrical.

https://en.wikipedia.org/wiki/Data compression symmetry