Binary entropy plot
Forfatter/Opretter:
Attribution:
Billedet er tagget "Attribution Required", men der blev ikke angivet nogen tilskrivningsoplysninger. Attributionsparameteren blev sandsynligvis udeladt ved brug af MediaWiki-skabelonen til CC-BY-licenserne. Forfattere og ophavsmænd finder et eksempel på korrekt brug af eksempel her. her.
Kredit:
Own work based on: Binary entropy plot.png fra Brona
Shortlink:
kilde:
størrelse:
300 x 300 Pixel (1258 Bytes)
beskrivelse:
en:Information entropy of a en:Bernoulli trial X. If X can assume values 0 and 1, entropy of X is defined as H(X) = -Pr(X=0) log2 Pr(X=0) - Pr(X=1) log2 Pr(X=1). It has value if Pr(X=0)=1 or Pr(X=1)=1. The entropy reaches maximum when Pr(X=0)=Pr(X=1)=1/2 (the value of entropy is then 1). The image was created in the following steps. First I have created a DVI version starting from a LaTeX/Pstricks source. Here is the code:
%Plot of information entropy of Bernoulli variable
%
%latex binary_entropy_plot; dvips binary_entropy_plot
%open .ps file in gimp, choose strong antialias in both text and graphics,
%resulution 500, color mode, crop, scale to 45%, save as .png
\documentclass[12pt]{article}
\usepackage{pst-plot}
\begin{document}
\psset{unit=4cm}
\begin{pspicture}(0,0)(1.01,1)
\psgrid[gridlabels=0pt,gridcolor=lightgray,subgriddiv=10,subgridcolor=lightgray](0,0)(0,0)(1,1)
\newrgbcolor{myblue}{0 0 0.7}
\psaxes[arrows=->,arrowsize=2pt 4,Dx=0.5,Dy=0.5](0,0)(0,0)(1.1,1.1)
\psplot[plotstyle=curve,plotpoints=100,linewidth=1.8pt,linecolor=myblue]{0.0001}{0.9999}{-1 x x log 2 log div mul 1 x sub 1 x sub log 2 log div mul add mul}
\rput(0.5,-0.22){$\Pr(X=1)$}
\rput{90}(-0.28,0.5){$H(X)$}
\end{pspicture}
\end{document}
Licens:
Licensbetingelser:
Creative Commons Attribution-Share Alike 3.0
Yderligere oplysninger om licens til billedet kan findes her. Sidste ændring: Sun, 21 Aug 2022 03:30:47 GMT
