shannon

shannon
(Sh)
   a unit of information content used in information and communications theory.
   The definition is based on the idea that less-likely messages are more informative than more-likely ones (for example, if a volcano rarely erupts, then a message that it is erupting is more informative than a message it is not erupting). If a message has probability p of being received, then its information content is -log2 p shannons. For example, if the message consists of 10 letters, and all strings of 10 letters are equally likely, then the probability of a particular message is 1/2610 and the information content of the message is 10(log2 26) = 47.004 shannons. This unit was originally called the bit2, because when the message is a bit string and all strings are equally likely, then the information content turns out to equal the number of bits. One shannon equals log10 2 = 0.301 030 hartley or loge 2 = 0.693 147 nat. The unit is named for the American mathematician Claude Shannon (1916-2001), the founder of information theory.

Dictionary of units of measurement. 2015.

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  • Shannon — steht für: Shannon (Name) ohne Nennung des Vornamens häufig Claude Elwood Shannon (1916–2001), US amerikanischer Informationstheoretiker Shannon (Einheit), Maßeinheit für den Informationsgehalt einer Nachricht Shannon Index für die Beschreibung… …   Deutsch Wikipedia

  • Shannon — Shannon, NC U.S. Census Designated Place in North Carolina Population (2000): 197 Housing Units (2000): 86 Land area (2000): 1.024759 sq. miles (2.654113 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.024759… …   StarDict's U.S. Gazetteer Places

  • shannon — ● shannon nom masculin (de C.E. Shannon, nom propre) Synonyme de bit. ● shannon (synonymes) nom masculin (de C.E. Shannon, nom propre) Synonymes : bit Shannon (Claude Elwood) ( …   Encyclopédie Universelle

  • Shannon F1 — Shannon era un equipo británico de Fórmula 1. Participaron en 2 grandes premios de la temporada 1966 con el inglés Trevor Taylor, el GP del Reino Unido y el GP de Italia, para el cual Taylor no pudo clasificarse debido a un fallo del motor V8… …   Wikipedia Español

  • Shannon, GA — U.S. Census Designated Place in Georgia Population (2000): 1682 Housing Units (2000): 723 Land area (2000): 5.017159 sq. miles (12.994382 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 5.017159 sq. miles… …   StarDict's U.S. Gazetteer Places

  • Shannon, IL — U.S. village in Illinois Population (2000): 854 Housing Units (2000): 357 Land area (2000): 0.478872 sq. miles (1.240273 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.478872 sq. miles (1.240273 sq. km) FIPS… …   StarDict's U.S. Gazetteer Places

  • Shannon, MS — U.S. town in Mississippi Population (2000): 1657 Housing Units (2000): 691 Land area (2000): 4.106558 sq. miles (10.635935 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.106558 sq. miles (10.635935 sq. km)… …   StarDict's U.S. Gazetteer Places

  • Shannon, NC — U.S. Census Designated Place in North Carolina Population (2000): 197 Housing Units (2000): 86 Land area (2000): 1.024759 sq. miles (2.654113 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.024759 sq. miles (2 …   StarDict's U.S. Gazetteer Places

  • Shannon — (spr. Schänn n), 1) der Hauptfluß Irlands, entspringt aus dem kleinen See Clean in der Grafschaft Leitrim der Provinz Connaught, geht durch den See Allen, wird bei seinem Austritt aus demselben schiffbar (der Fall oberhalb Limerik wird durch… …   Pierer's Universal-Lexikon

  • Shannon [1] — Shannon (spr. schännen), Hauptfluß Irlands, entspringt in dem Cuilcaghgebirge der Grafschaft Cavan, fließt durch den Lough Allen, erweitert sich dann zum Lough Ree (s. d.), weiter südlich zum Lough Derg (s. d.), beide berühmt wegen ihrer… …   Meyers Großes Konversations-Lexikon

  • Shannon [2] — Shannon (spr. schännen), Charles Hazlewood, engl. Maler und Graphiker, geb. 26. April 1865 in London, Schüler von Charles Ricketts, mit dem er unter andern die Zeitschrift »The Dial« herausgab, besuchte Frankreich, Flandern, Italien etc. und ließ …   Meyers Großes Konversations-Lexikon

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