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<html><head>  <meta HTTP-EQUIV="Content-Type" CONTENT="text/html;charset=ISO-8859-1">  <title>demo_linclass.m</title><link rel="stylesheet" type="text/css" href="../../m-syntax.css"></head><body><code><span class=defun_kw>function</span>&nbsp;<span class=defun_out>result&nbsp;</span>=&nbsp;<span class=defun_name>demo_linclass</span>(<span class=defun_in>action,hfigure,varargin</span>)<br><span class=h1>%&nbsp;DEMO_LINCLASS&nbsp;Demo&nbsp;on&nbsp;the&nbsp;algorithms&nbsp;learning&nbsp;linear&nbsp;classifiers.</span><br><span class=help>%</span><br><span class=help>%&nbsp;<span class=help_field>Synopsis:</span></span><br><span class=help>%&nbsp;&nbsp;demo_linclass</span><br><span class=help>%</span><br><span class=help>%&nbsp;<span class=help_field>Description:</span></span><br><span class=help>%&nbsp;&nbsp;DEMO_LINCLASS&nbsp;demonstrates&nbsp;use&nbsp;of&nbsp;the&nbsp;algorithms&nbsp;which&nbsp;find&nbsp;</span><br><span class=help>%&nbsp;&nbsp;linear&nbsp;decision&nbsp;hyperplane&nbsp;between&nbsp;two&nbsp;(dichotomy)</span><br><span class=help>%&nbsp;&nbsp;vector&nbsp;sets.&nbsp;The&nbsp;demo&nbsp;requires&nbsp;2D&nbsp;input&nbsp;training&nbsp;data.</span><br><span class=help>%</span><br><span class=help>%&nbsp;&nbsp;The&nbsp;program&nbsp;vizualizes&nbsp;found&nbsp;hyperplane&nbsp;in&nbsp;the&nbsp;current&nbsp;</span><br><span class=help>%&nbsp;&nbsp;algorithm&nbsp;step.&nbsp;The&nbsp;missclassified&nbsp;vector&nbsp;used&nbsp;by&nbsp;the</span><br><span class=help>%&nbsp;&nbsp;demonstrated&nbsp;iterative&nbsp;algorithms&nbsp;for&nbsp;update&nbsp;is&nbsp;vizualized</span><br><span class=help>%&nbsp;&nbsp;as&nbsp;well.&nbsp;Text&nbsp;description&nbsp;of&nbsp;the&nbsp;found&nbsp;solution&nbsp;is</span><br><span class=help>%&nbsp;&nbsp;printed&nbsp;at&nbsp;the&nbsp;bottom&nbsp;part&nbsp;of&nbsp;window.</span><br><span class=help>%</span><br><span class=help>%&nbsp;&nbsp;Following&nbsp;algorithms&nbsp;can&nbsp;be&nbsp;tested:</span><br><span class=help>%</span><br><span class=help>%&nbsp;&nbsp;Perceptron&nbsp;&nbsp;-&nbsp;Perceptron&nbsp;learning&nbsp;rule&nbsp;(see&nbsp;'help&nbsp;perceptron').</span><br><span class=help>%&nbsp;&nbsp;Kozinec&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Kozinec's&nbsp;algorithm&nbsp;(see&nbsp;'help&nbsp;ekozinec',&nbsp;eps=-1).&nbsp;</span><br><span class=help>%&nbsp;&nbsp;e-Kozinec&nbsp;&nbsp;&nbsp;-&nbsp;Kozinec's&nbsp;algorithm&nbsp;finding&nbsp;eps-optimal&nbsp;hyperplane</span><br><span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(see&nbsp;'help&nbsp;ekozinec',&nbsp;eps&nbsp;&gt;&nbsp;0).</span><br><span class=help>%&nbsp;&nbsp;Linear&nbsp;SVM&nbsp;&nbsp;&nbsp;-&nbsp;Linear&nbsp;Supprot&nbsp;Vector&nbsp;Machines&nbsp;for&nbsp;separable&nbsp;data</span><br><span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(see&nbsp;'help&nbsp;smo',&nbsp;C=inf,&nbsp;ker='linear').</span><br><span class=help>%</span><br><span class=help>%&nbsp;<span class=help_field>Control:</span></span><br><span class=help>%&nbsp;&nbsp;Algorithm&nbsp;&nbsp;-&nbsp;Dselects&nbsp;algorithm&nbsp;for&nbsp;testing.</span><br><span class=help>%&nbsp;&nbsp;Epsilon&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Input&nbsp;parameter&nbsp;of&nbsp;'ekozinec'&nbsp;algorithm&nbsp;</span><br><span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(see&nbsp;'help&nbsp;ekozinec').</span><br><span class=help>%&nbsp;&nbsp;Iterations&nbsp;-&nbsp;Number&nbsp;of&nbsp;iterations&nbsp;in&nbsp;one&nbsp;step.</span><br><span class=help>%&nbsp;&nbsp;Animation&nbsp;&nbsp;-&nbsp;Enables/dissables&nbsp;animation&nbsp;-&nbsp;smooth&nbsp;changeover&nbsp;</span><br><span class=help>%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;between&nbsp;two&nbsp;algorithm&nbsp;states.</span><br><span class=help>%</span><br><span class=help>%&nbsp;&nbsp;FIG2EPS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Exports&nbsp;screen&nbsp;to&nbsp;the&nbsp;PostScript&nbsp;file.</span><br><span class=help>%&nbsp;&nbsp;Load&nbsp;data&nbsp;&nbsp;&nbsp;-&nbsp;Loads&nbsp;input&nbsp;training&nbsp;data&nbsp;from&nbsp;file.</span><br><span class=help>%&nbsp;&nbsp;Create&nbsp;data&nbsp;-&nbsp;Invokes&nbsp;program&nbsp;for&nbsp;creating&nbsp;training&nbsp;data.</span><br><span class=help>%&nbsp;&nbsp;Reset&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Sets&nbsp;the&nbsp;algorithm&nbsp;to&nbsp;the&nbsp;initial&nbsp;state.</span><br><span class=help>%&nbsp;&nbsp;Play&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Runs&nbsp;the&nbsp;algorithm.</span><br><span class=help>%&nbsp;&nbsp;Stop&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Stops&nbsp;the&nbsp;running&nbsp;algorithm.</span><br><span class=help>%&nbsp;&nbsp;Step&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Perform&nbsp;one&nbsp;step&nbsp;of&nbsp;the&nbsp;algorithm.</span><br><span class=help>%&nbsp;&nbsp;Info&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Invoke&nbsp;the&nbsp;info&nbsp;box.</span><br><span class=help>%&nbsp;&nbsp;Close&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;Close&nbsp;the&nbsp;program.</span><br><span class=help>%</span><br><span class=help>%&nbsp;See&nbsp;also&nbsp;</span><br><span class=help>%&nbsp;&nbsp;PERCEPTRON,&nbsp;EKOZINEC,&nbsp;SVM.</span><br><span class=help>%</span><br><hr><span class=help1>%&nbsp;<span class=help1_field>About:</span>&nbsp;Statistical&nbsp;Pattern&nbsp;Recognition&nbsp;Toolbox</span><br><span class=help1>%&nbsp;(C)&nbsp;1999-2003,&nbsp;Written&nbsp;by&nbsp;Vojtech&nbsp;Franc&nbsp;and&nbsp;Vaclav&nbsp;Hlavac</span><br><span class=help1>%&nbsp;&lt;a&nbsp;href="http://www.cvut.cz"&gt;Czech&nbsp;Technical&nbsp;University&nbsp;Prague&lt;/a&gt;</span><br><span class=help1>%&nbsp;&lt;a&nbsp;href="http://www.feld.cvut.cz"&gt;Faculty&nbsp;of&nbsp;Electrical&nbsp;Engineering&lt;/a&gt;</span><br><span class=help1>%&nbsp;&lt;a&nbsp;href="http://cmp.felk.cvut.cz"&gt;Center&nbsp;for&nbsp;Machine&nbsp;Perception&lt;/a&gt;</span><br><br><span class=help1>%&nbsp;<span class=help1_field>Modifications:</span></span><br><span class=help1>%&nbsp;19-sep-2003,&nbsp;VF</span><br><span class=help1>%&nbsp;17-Feb-2003,&nbsp;VF</span><br><span class=help1>%&nbsp;24.&nbsp;6.00&nbsp;V.&nbsp;Hlavac,&nbsp;comments&nbsp;polished.</span><br><span class=help1>%&nbsp;11-dec-2000&nbsp;V.&nbsp;Franc,&nbsp;a&nbsp;little&nbsp;increasing&nbsp;of&nbsp;code&nbsp;readibility</span><br><span class=help1>%&nbsp;15-dec-2000</span><br><br><hr>LINE_WIDTH=1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;width&nbsp;of&nbsp;separation&nbsp;line</span><br>ANIM_STEPS=10;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;number&nbsp;of&nbsp;steps&nbsp;during&nbsp;the&nbsp;line&nbsp;animation</span><br>BORDER=0.2;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;minimal&nbsp;space&nbsp;between&nbsp;axis&nbsp;and&nbsp;points</span><br><span class=comment>%DATA_IDENT='Finite&nbsp;sets,&nbsp;Enumeration';&nbsp;&nbsp;%&nbsp;file&nbsp;identifier</span><br>ALGOS=[<span class=quotes>'Perceptron'</span>;<span class=quotes>'Kozinec&nbsp;&nbsp;&nbsp;'</span>;<span class=quotes>'e-Kozinec&nbsp;'</span>;&nbsp;&nbsp;<span class=quotes>'LinearSVM&nbsp;'</span>];<br>WRONGPOINT_SIZE&nbsp;=&nbsp;13;<br><br><span class=comment>%&nbsp;if&nbsp;number&nbsp;of&nbsp;arguments&nbsp;is&nbsp;less&nbsp;then&nbsp;1,&nbsp;that&nbsp;means&nbsp;first&nbsp;call&nbsp;of&nbsp;this</span><br><span class=comment>%&nbsp;function.&nbsp;Every&nbsp;other&nbsp;calls&nbsp;set&nbsp;up&nbsp;at&nbsp;least&nbsp;argument&nbsp;action</span><br><span class=keyword>if</span>&nbsp;<span class=stack>nargin</span>&nbsp;&lt;&nbsp;1,<br>&nbsp;&nbsp;&nbsp;action&nbsp;=&nbsp;<span class=quotes>'initialize'</span>;<br><span class=keyword>end</span><br><br><span class=comment>%&nbsp;what&nbsp;action&nbsp;is&nbsp;required&nbsp;?</span><br><span class=keyword>switch</span>&nbsp;lower(action)<br><br><span class=label>case</span>&nbsp;<span class=quotes>'initialize'</span><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;==&nbsp;Initialize&nbsp;user&nbsp;interface&nbsp;control&nbsp;and&nbsp;figure&nbsp;=======</span><br><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;==&nbsp;Figure&nbsp;=============================================</span><br>&nbsp;&nbsp;&nbsp;left=0.1;<br>&nbsp;&nbsp;&nbsp;width=0.8;<br>&nbsp;&nbsp;&nbsp;bottom=0.1;<br>&nbsp;&nbsp;&nbsp;height=0.8;<br>&nbsp;&nbsp;&nbsp;hfigure=<span class=graph>figure</span>(<span class=quotes>'Name'</span>,<span class=quotes>'Linear&nbsp;discriminant&nbsp;function'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Visible'</span>,<span class=quotes>'off'</span>,...<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'NumberTitle'</span>,<span class=quotes>'off'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Position'</span>,[left&nbsp;bottom&nbsp;width&nbsp;height],...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'tag'</span>,<span class=quotes>'Demo_Linclass'</span>,...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'RendererMode'</span>,<span class=quotes>'manual'</span>);<br><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;==&nbsp;Axes&nbsp;=========================================</span><br>&nbsp;&nbsp;&nbsp;left=0.1;<br>&nbsp;&nbsp;&nbsp;width=0.65;<br>&nbsp;&nbsp;&nbsp;bottom=0.35;<br>&nbsp;&nbsp;&nbsp;height=0.60;<br>&nbsp;&nbsp;&nbsp;haxes1=<span class=graph>axes</span>(...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Box'</span>,<span class=quotes>'on'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'DrawMode'</span>,<span class=quotes>'fast'</span>,...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'UserData'</span>,[],...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Position'</span>,[left&nbsp;bottom&nbsp;width&nbsp;height]);<br>&nbsp;&nbsp;&nbsp;xlabel(<span class=quotes>'feature&nbsp;x_1'</span>);<br>&nbsp;&nbsp;&nbsp;ylabel(<span class=quotes>'feature&nbsp;x_2'</span>);<br><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;==&nbsp;Comment&nbsp;window&nbsp;=================================</span><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;Comment&nbsp;Window&nbsp;frame</span><br>&nbsp;&nbsp;&nbsp;bottom=0.05;<br>&nbsp;&nbsp;&nbsp;height=0.2;<br>&nbsp;&nbsp;&nbsp;<span class=graph>uicontrol</span>(&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Style'</span>,<span class=quotes>'frame'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Position'</span>,[left&nbsp;bottom&nbsp;width&nbsp;height],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'BackgroundColor'</span>,[0.5&nbsp;0.5&nbsp;0.5]);<br><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;Text&nbsp;label</span><br>&nbsp;&nbsp;&nbsp;<span class=graph>uicontrol</span>(&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Style'</span>,<span class=quotes>'text'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Position'</span>,[left&nbsp;height-0.01&nbsp;width&nbsp;0.05],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'BackgroundColor'</span>,[0.5&nbsp;0.5&nbsp;0.5],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'ForegroundColor'</span>,[1&nbsp;1&nbsp;1],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'String'</span>,<span class=quotes>'Comment&nbsp;Window'</span>);<br><br>&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;Edit&nbsp;window</span><br>&nbsp;&nbsp;&nbsp;border=0.01;<br>&nbsp;&nbsp;&nbsp;hconsole=<span class=graph>uicontrol</span>(&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Style'</span>,<span class=quotes>'edit'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'HorizontalAlignment'</span>,<span class=quotes>'left'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Units'</span>,<span class=quotes>'normalized'</span>,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Max'</span>,10,&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'BackgroundColor'</span>,[1&nbsp;1&nbsp;1],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Position'</span>,[left+border&nbsp;bottom&nbsp;width-2*border&nbsp;height-0.05],&nbsp;...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'Enable'</span>,<span class=quotes>'inactive'</span>,...<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class=quotes>'String'</span>,<span class=quotes>''</span>);<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;==&nbsp;Buttons&nbsp;===========================================</span><br>&nbsp;&nbsp;&nbsp;&nbsp;<span class=comment>%&nbsp;--&nbsp;Export&nbsp;to&nbsp;EPS&nbsp;---------</span><br>&nbsp;&nbsp;&nbsp;width=0.1;<br>&nbsp;&nbsp;&nbsp;left=0.75-width;<br>&nbsp;&nbsp;&nbsp;bottom=0.95;<br>&nbsp;&nbsp;&nbsp;height=0.04;<br>
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