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<HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1252"><META NAME="Generator" CONTENT="Microsoft FrontPage 4.0"><TITLE>SVM-Multiclass: Multi-Class Support Vector Machine</TITLE><META NAME="Version" CONTENT="8.0.3514"><META NAME="Date" CONTENT="11/26/96"><META NAME="Template" CONTENT="C:\Programme\Microsoft Office\Office\HTML.DOT"></HEAD><BODY vLink=#800080 link=#0000ff bgColor=#ffffff><TABLE cellSpacing=0 cellPadding=5 border=0> <TBODY> <TR> <TD vAlign=top width="14%"> <H2><IMG height=80 src="culogo_125.gif" tppabs="http://www.cs.cornell.edu/People/tj/images/culogo_125.gif" width=80></H2></TD> <TD vAlign=top width="75%"> <H1 align=center>SVM<I><SUP>multiclass</SUP> </H1></I> <H1 align=center>Multi-Class Support Vector Machine</H1><FONT color=#000000> <P align=center>Author: </FONT><A href="javascript:if(confirm('http://www.joachims.org/ \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.joachims.org/'" tppabs="http://www.joachims.org/" target=_top>Thorsten Joachims</A><FONT color=#000000> <</FONT><A href="mailto:thorsten@joachims.org">thorsten@joachims.org</A><FONT color=#000000>> <BR></FONT><A href="javascript:if(confirm('http://www.cornell.edu/ \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.cornell.edu/'" tppabs="http://www.cornell.edu/" target=_top>Cornell University</A><FONT color=#000000> <BR></FONT><A href="javascript:if(confirm('http://www.cs.cornell.edu/ \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.cs.cornell.edu/'" tppabs="http://www.cs.cornell.edu/" target=_top>Department of Computer Science</A><FONT color=#000000> </P> <P align=center>Version: 1.01 <BR>Date: 01.09.2004</FONT></P></TD> <TD vAlign=top width="11%"> <H2><IMG height=80 src="culogo_125.gif" tppabs="http://www.cs.cornell.edu/People/tj/images/culogo_125.gif" width=80></H2></TD> </TR></TBODY></TABLE><H2>Overview</H2><P><I>SVM<SUP>multiclass</SUP></I> is an implementation of the multi-class Support Vector Machine (SVM) described in [1]. While the optimization problem is the same as in [1], this implementation uses a different algorithm which is described in [2].</P><P>This implementation is an instance of <I>SVM<SUP>struct</SUP></I>. It was not optimized for speed by exploiting special properties of the multi-class optimization problem, but serves primarily as a easy tutorial example of how to use the <I>SVM<SUP>struct</SUP></I> programming interface. Nevertheless, this implementation should be able to handle fairly large problems. More information on <I>SVM<SUP>struct</SUP></I> is available <a href="svm_struct.html" tppabs="http://www.cs.cornell.edu/People/tj/svm%5Flight/svm_struct.html">here</a>.<H2>Source Code</H2>The program is free for scientific use. Please contact me, if you are planning to use the software for commercial purposes. The software must not be further distributed without prior permission of the author. The implementation was developed on Solaris 2.7 with gcc, but compiles also on Linux, IRIX, Cygwin, and Powermac (after small modifications, see </FONT><A href="svm_light_faq.html" tppabs="http://www.cs.cornell.edu/People/tj/svm%5Flight/svm_light_faq.html">FAQ</A>). The source code is available at the following location: </P><P><PRE> <a href="javascript:if(confirm('http://download.joachims.org/svm_multiclass/current/svm_multiclass.tar.gz \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://download.joachims.org/svm_multiclass/current/svm_multiclass.tar.gz'" tppabs="http://download.joachims.org/svm_multiclass/current/svm_multiclass.tar.gz">http://download.joachims.org/svm_multiclass/current/svm_multiclass.tar.gz</a></PRE></P><P><A href="mailto:svm-light@ls8.cs.uni-dortmund.de">Please send me email</A><FONT COLOR="#000000"> and let me know that you got it. The archive contains the source code of the most recent version of <I>SVM<SUP>multiclass</SUP></I>, which includes the source code of <a href="svm_struct.html" tppabs="http://www.cs.cornell.edu/People/tj/svm%5Flight/svm_struct.html"><I>SVM<SUP>struct</SUP></I></a> and the <a href="index.html" tppabs="http://www.cs.cornell.edu/People/tj/svm%5Flight/index.html"><I>SVM<SUP>light</SUP></I> quadratic optimizer</a>. Unpack the archive using the shell command:<P><PRE> gunzip 朿 svm_multiclass.tar.gz | tar xvf ⌨️ 快捷键说明
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