An analog to thermodynamic entropy is information entropy. In 1948, while working at Bell Telephone Laboratories electrical engineer Claude Shannon set out to mathematically quantify the statistical nature of “lost information” in phone-line signals. To do this, Shannon developed the very general concept of information entropy, a fundamental cornerstone of information theory. Although the story varies, initially it seems that Shannon was not particularly aware of the close similarity between his new quantity and earlier work in thermodynamics. In 1949, however, when Shannon had been working on his equations for some time, he happened to visit the mathematician John von Neumann. During their discussions, regarding what Shannon should call the “measure of uncertainty” or attenuation in phone-line signals with reference to his new information theory, according to one source:[10]
“My greatest concern was what to call it. I thought of calling it ‘information’, but the word was overly used, so I decided to call it ‘uncertainty’. When I discussed it with John von Neumann, he had a better idea. Von Neumann told me, ‘You should call it entropy, for two reasons. In the first place your uncertainty function has been used in statistical mechanics under that name, so it already has a name. In the second place, and more important, nobody knows what entropy really is, so in a debate you will always have the advantage.'"
12-12-2012, 18:03
m0dkayZ
Re: Što ste danas spoznali. Part Deux
Ljudi moji istina je živa,
Isus ne postoji sve je droga kriva.
Dobre su stranice za motat
Hihihi, kako su simpatični forumašići kada se udruže protiv nekoga.
12-12-2012, 21:22
Wizard
Re: Što ste danas spoznali. Part Deux
Radim seminar o Erdősu, briljantnom matematičaru i jednoj o najzanimljivijih individua uopće. Pa puno je toga tu zanimljivo i ne matematičarima, al Erdős-Baconov brojSje vako zanimljiv, bez puno veze s matematikom. :)
Lektoriram (tj. činim podnošljivim) završni rad od neke mlade dame.
Ne mogu shvatiti da neki ljudi nemaju uopće osjećaj za koherentno pisanje paragrafa. Unutar jednog odlomka izmijeni 3 teme :(
15-12-2012, 12:11
Arbiter of Change
Re: Što ste danas spoznali. Part Deux
Ne čitaju ništa osim 24 sata.
15-12-2012, 20:01
Carp
Re: Što ste danas spoznali. Part Deux
Dobio sam inv za Razer Comms. Imam jos 6 inv ako nekoga zanima.
15-12-2012, 22:52
Kostolomac
Re: Što ste danas spoznali. Part Deux
Mo'š puknut jednoga da isprobam.
16-12-2012, 01:12
Carp
Re: Što ste danas spoznali. Part Deux
Tko hoce nek mi senda mail na pp. I ti kostolomce!
