跳去內容

File:Binary entropy plot.svg

頁面內容唔支援其他語言。
出自維基百科，自由嘅百科全書
原本檔案 （SVG檔案，表面大細： 300 × 300 像素，檔案大細：1 KB）

摘要

描述

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}
compile it with latex to get the DVI. Then it was converted to PS with dvips. Finally it was converted to SVG using ps2svg.sh; it needed some post-processing with Inkscape
日子
來源 Own work based on: Binary entropy plot.png by Brona
作者  
Vector:

Newer version by Rubber Duck
SVG genesis
InfoField
 
The SVG code is valid.
 
This diagram was created with a text editor.
Previous version had been created with Inkscape (40763 bytes)  d  now 3.09% of previous size
 
Please do not replace the simplified code of this file with a version created with Inkscape or any other vector graphics editor
{{#switch:|p=
Translate this file This SVG file contains embedded text that can be translated into your language, using any capable SVG editor, text editor or the SVG Translate tool. For more information see: About translating SVG files.
|P=
This file is translated using SVG <switch> elements. All translations are stored in the same file! Learn more.

For most Wikipedia projects, you can embed the file normally (without a lang parameter). The Wikipedia will use its language if the SVG file supports that language. For example, the German Wikipedia will use German if the SVG file has German. To embed this file in a particular language use the lang parameter with the appropriate language code, e.g. [[File:Binary entropy plot.svg|lang=en]] for the English version. Do not specify a lang parameter if it is not needed. The parameter may prevent the use of a subsequent translation.

To translate the text into your language, you can use the SVG Translate tool. Alternatively, you can download the file to your computer, add your translations using whatever software you're familiar with, and re-upload it with the same name. You will find help in Graphics Lab if you're not sure how to do this.

|vf|vs|vv|f=|#default=
 
 This diagram uses  that can be easily translated using a text editor.

協議

我，呢份作品嘅作者，決定用以下許可發佈呢件作品：
GNU head 根據自由軟體基金會發佈嘅無固定段落、封面文字同封底文字GNU自由文件授權條款第1.2或打後嘅版本，你獲授權可以重製、散佈同埋修改呢一份文件。授權條款嘅副本喺章節GNU自由文件授權條款。
w:en:Creative Commons
署名 相同方式分享 		呢個檔案係根據以下共享創意所授權嘅同埋 歸因 - 共享相同3.0未移植嘅牌照。
你可以：
  • 去分享 – 複製、發佈同傳播呢個作品
  • 再改 – 創作演繹作品
要遵照下面嘅條件：
  • 署名 – 你一定要畀合適嘅表彰、畀返指向呢個授權條款嘅連結，同埋寫明有無改過嚟。你可以用任何合理方式去做，但唔可以用任何方式暗示授權人認可咗你或者你嘅使用方式。
  • 相同方式分享 – 如果你用任何方式改過呢個作品，你必須要用返同一個或者兼容嘅授權嚟發佈。
This licensing tag was added to this file as part of the GFDL licensing update.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

圖中顯示嘅係

成立日

4月 2007

MIME 類型

image/svg+xml

核對值

a9cd604177c23863a984861678b72545aed6298f

斷定方法：SHA-1

資料大細

1,258 字節

高度

300 像素

闊度

300 像素

檔案歷史

撳個日期／時間去睇響嗰個時間出現過嘅檔案。

日子／時間縮圖尺寸用戶註解
現時2015年2月9號 (一) 16:07響2015年2月9號 (一) 16:07嘅縮圖版本300 × 300（1 KB）Krishnavedalasimplified drawing
2007年4月22號 (日) 15:19響2007年4月22號 (日) 15:19嘅縮圖版本169 × 163（40 KB）Alejo2083{{Information |Description=Information entropy of a Bernoulli trial ''X''. If ''X'' can assume values 0 and 1, entropy of ''X'' is defined as ''H''(''X'') = -Pr(''X''=0) log<sub>2</sub> Pr(''X''=0) - Pr(''X''=1) log<sub>2</sub> Pr(''X''=1). It has

以下嘅2版用到呢個檔：

全域檔案使用情況

下面嘅維基都用緊呢個檔案：

Metadata

呢個檔案有額外嘅資料。佢應該係數碼相機或者掃描器整出來嘅。如果佢整咗之後畀人改過，裏面嘅資料未必同改過之後相符。

由「https://zh-yue.wikipedia.org/wiki/File:Binary_entropy_plot.svg」收