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📄 usps2mat.html

📁 统计模式识别工具箱（Statistical Pattern Recognition Toolbox）包含： 1
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<html><head>  <meta HTTP-EQUIV="Content-Type" CONTENT="text/html;charset=ISO-8859-1">  <title>Contents.m</title><link rel="stylesheet" type="text/css" href="../stpr.css"></head><body><table  border=0 width="100%" cellpadding=0 cellspacing=0><tr valign="baseline"><td valign="baseline" class="function"><b class="function">USPS2MAT</b><td valign="baseline" align="right" class="function"><a href="../data/index.html" target="mdsdir"><img border = 0 src="../up.gif"></a></table>  <p><b>converts USPS database to Matlab data file (MAT).</b></p>  <hr><div class='code'><code><span class=help></span><br><span class=help>&nbsp;<span class=help_field>Description:</span></span><br><span class=help>&nbsp;&nbsp;It&nbsp;creates&nbsp;MAT-file&nbsp;containing&nbsp;training&nbsp;and&nbsp;testing&nbsp;part</span><br><span class=help>&nbsp;&nbsp;of&nbsp;the&nbsp;USPS&nbsp;database&nbsp;of&nbsp;handwritten&nbsp;numerals.</span><br><span class=help></span><br><span class=help>&nbsp;<span class=help_field>Input:</span></span><br><span class=help>&nbsp;&nbsp;It&nbsp;requires&nbsp;input&nbsp;text&nbsp;files&nbsp;"zip.test"&nbsp;and&nbsp;"zip.train"</span><br><span class=help>&nbsp;&nbsp;which&nbsp;can&nbsp;be&nbsp;downloaded&nbsp;from:</span><br><span class=help></span><br><span class=help>&nbsp;&nbsp;http://www-stat-class.stanford.edu/~tibs/ElemStatLearn/datasets/zip.train.gz</span><br><span class=help>&nbsp;&nbsp;http://www-stat-class.stanford.edu/~tibs/ElemStatLearn/datasets/zip.test.gz</span><br><span class=help>&nbsp;&nbsp;</span><br><span class=help>&nbsp;<span class=help_field>Output:</span></span><br><span class=help>&nbsp;&nbsp;The&nbsp;output&nbsp;MAT-file&nbsp;"usps.mat"&nbsp;contains:&nbsp;</span><br><span class=help>&nbsp;&nbsp;&nbsp;trn.X&nbsp;[256&nbsp;x&nbsp;7291]&nbsp;Images&nbsp;of&nbsp;training&nbsp;numerals&nbsp;stored&nbsp;as&nbsp;columns.</span><br><span class=help>&nbsp;&nbsp;&nbsp;trn.y&nbsp;[1&nbsp;x&nbsp;7291]&nbsp;Labels&nbsp;y==1&nbsp;--&gt;"1",&nbsp;...,&nbsp;y==9--&gt;"9",...&nbsp;y==10--&gt;"0".</span><br><span class=help></span><br><span class=help>&nbsp;&nbsp;&nbsp;tst.X&nbsp;[256&nbsp;x&nbsp;2007]&nbsp;Images&nbsp;of&nbsp;testing&nbsp;numerals&nbsp;stored&nbsp;as&nbsp;columns.</span><br><span class=help>&nbsp;&nbsp;&nbsp;tst.y&nbsp;[1&nbsp;x&nbsp;2007]&nbsp;Labels.</span><br><span class=help></span><br><span class=help>&nbsp;<span class=help_field>Example:</span></span><br><span class=help>&nbsp;&nbsp;The&nbsp;following&nbsp;code&nbsp;displays&nbsp;the&nbsp;first&nbsp;training&nbsp;image.</span><br><span class=help>&nbsp;&nbsp;&nbsp;load&nbsp;usps.mat;</span><br><span class=help>&nbsp;&nbsp;&nbsp;img&nbsp;=&nbsp;reshape(trn.X(:,1),16,16);</span><br><span class=help>&nbsp;&nbsp;&nbsp;figure;&nbsp;</span><br><span class=help>&nbsp;&nbsp;&nbsp;imshow(img,[]);</span><br><span class=help>&nbsp;</span><br></code></div>  <hr>  <b>Source:</b> <a href= "../data/list/usps2mat.html">usps2mat.m</a>  <p><b class="info_field">About: </b>  Statistical Pattern Recognition Toolbox<br> (C) 1999-2003, Written by Vojtech Franc and Vaclav Hlavac<br> <a href="http://www.cvut.cz">Czech Technical University Prague</a><br> <a href="http://www.feld.cvut.cz">Faculty of Electrical Engineering</a><br> <a href="http://cmp.felk.cvut.cz">Center for Machine Perception</a><br>  <p><b class="info_field">Modifications: </b> <br> 07-jun-2004, VF<br> 10-mar-2004, VF<br></body></html>

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