dictionary-based data compression

dictionary-based data compression
сжатие данных с использованием словаря (замена группы знаков кодом фиксированной длины)

Англо-русский словарь по компьютерной безопасности. . 2011.

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  • Data compression — Source coding redirects here. For the term in computer programming, see Source code. In computer science and information theory, data compression, source coding or bit rate reduction is the process of encoding information using fewer bits than… …   Wikipedia

  • data compression — Process of reducing the amount of data needed for storage or transmission of a given piece of information (text, graphics, video, sound, etc.), typically by use of encoding techniques. Data compression is characterized as either lossy or lossless …   Universalium

  • Lossless data compression — is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of the original data to be… …   Wikipedia

  • Dictionary coder — A dictionary coder, also sometimes known as a substitution coder, is a class of lossless data compression algorithms which operate by searching for matches between the text to be compressed and a set of strings contained in a data structure… …   Wikipedia

  • Data differencing — In computer science and information theory, data differencing or differential compression is producing a technical description of the difference between two sets of data – a source and a target. Formally, a data differencing algorithm takes as… …   Wikipedia

  • Compression artifact — Original image, with good color grade Loss of edge clarity and tone fuzziness in heavy JPEG compression A compression ar …   Wikipedia

  • Dynamic Markov compression — (DMC) is a lossless data compression algorithm developed by Gordon Cormack and Nigel Horspool [1]. It uses predictive arithmetic coding similar to prediction by partial matching (PPM), except that the input is predicted one bit at a time (rather… …   Wikipedia

  • Signaling Compression — Signaling compression, or SigComp, is a compression method designed especially for compression of text based communication data as SIP or RTSP. SigComp had originally been defined in RFC 3320 and was later updated with RFC 4896. A Negative… …   Wikipedia

  • IBM 3480 Family — The 3480 tape format is a magnetic tape data storage format developed by IBM. The tape is one half inch wide and is packaged in a 4 x5 x1 cartridge. The cartridge contains a single reel and there is a takeup reel is inside the tape drive.Because… …   Wikipedia

  • PAQ — A sample session of PAQ8O PAQ is a series of lossless data compression archivers that have evolved through collaborative development to top rankings on several benchmarks measuring compression ratio (although at the expense of speed and memory… …   Wikipedia

  • Portable Document Format — PDF redirects here. For other uses, see PDF (disambiguation). Portable Document Format Adobe Reader icon Filename extension .pdf Internet media type application/pdf application/x pdf application/x bzpdf application/x gzpdf …   Wikipedia


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