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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"><html><head> <title>Description of LTUsimulate</title> <meta name="keywords" content="LTUsimulate"> <meta name="description" content="LTUsimulate - simulates an LTU network for numIter time steps."> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="generator" content="m2html © 2003 Guillaume Flandin"> <meta name="robots" content="index, follow"> <link type="text/css" rel="stylesheet" href="../m2html.css"></head><body><a name="_top"></a><div><a href="../index.html">Home</a> > <a href="#">mfiles</a> > LTUsimulate.m</div><!--<table width="100%"><tr><td align="left"><a href="../index.html"><img alt="<" border="0" src="../left.png"> Master index</a></td><td align="right"><a href="index.html">Index for .\mfiles <img alt=">" border="0" src="../right.png"></a></td></tr></table>--><h1>LTUsimulate</h1><h2><a name="_name"></a>PURPOSE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>LTUsimulate - simulates an LTU network for numIter time steps.</strong></div><h2><a name="_synopsis"></a>SYNOPSIS <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="box"><strong>function [output,newStates] = LTUsimulate(LTUnetwork,states,inputs,numIter) </strong></div><h2><a name="_description"></a>DESCRIPTION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre class="comment"> LTUsimulate - simulates an LTU network for numIter time steps. [output,newStates] = LTUsimulate(LTUnetwork,states,inputs,numIter) simlulates an LTUnetwork with states and input for numIter time steps, returns the new states and the output. LTUnetwork contains the information for connectivity and for which cells in the network are input and output cells; states is a vector containing a state (0 or 1) for each unit; input is the numerical input values into the network; numIter is the number of iterations to be simulated. output is a vector of network outputs (0 or 1); newStates is the new state vector for the network. See also <a href="makeLTUsegmentNetwork.html" class="code" title="function LTUnetwork = makeLTUsegmentNetwork(mapSize,thresh)">makeLTUsegmentNetwork</a>, <a href="LTUsegmentMap.html" class="code" title="function [resultMap,segMaps] = LTUsegmentMap(map,seedPoint,varargin)">LTUsegmentMap</a>, <a href="dataStructures.html" class="code" title="">dataStructures</a>.</pre></div><!-- crossreference --><h2><a name="_cross"></a>CROSS-REFERENCE INFORMATION <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2>This function calls:<ul style="list-style-image:url(../matlabicon.gif)"></ul>This function is called by:<ul style="list-style-image:url(../matlabicon.gif)"><li><a href="LTUsegmentMap.html" class="code" title="function [resultMap,segMaps] = LTUsegmentMap(map,seedPoint,varargin)">LTUsegmentMap</a> LTUsegmentMap - segment map using a network of linear threshold units.</li></ul><!-- crossreference --><h2><a name="_source"></a>SOURCE CODE <a href="#_top"><img alt="^" border="0" src="../up.png"></a></h2><div class="fragment"><pre>0001 <span class="comment">% LTUsimulate - simulates an LTU network for numIter time steps.</span>0002 <span class="comment">%</span>0003 <span class="comment">% [output,newStates] = LTUsimulate(LTUnetwork,states,inputs,numIter)</span>0004 <span class="comment">% simlulates an LTUnetwork with states and input for numIter</span>0005 <span class="comment">% time steps, returns the new states and the output.</span>0006 <span class="comment">% LTUnetwork contains the information for connectivity and for</span>0007 <span class="comment">% which cells in the network are input and output cells;</span>0008 <span class="comment">% states is a vector containing a state (0 or 1) for each unit;</span>0009 <span class="comment">% input is the numerical input values into the network;</span>0010 <span class="comment">% numIter is the number of iterations to be simulated.</span>0011 <span class="comment">%</span>0012 <span class="comment">% output is a vector of network outputs (0 or 1);</span>0013 <span class="comment">% newStates is the new state vector for the network.</span>0014 <span class="comment">%</span>0015 <span class="comment">% See also makeLTUsegmentNetwork, LTUsegmentMap, dataStructures.</span>0016 0017 <span class="comment">% This file is part of the SaliencyToolbox - Copyright (C) 2006-2007</span>0018 <span class="comment">% by Dirk B. Walther and the California Institute of Technology.</span>0019 <span class="comment">% See the enclosed LICENSE.TXT document for the license agreement.</span>0020 <span class="comment">% More information about this project is available at:</span>0021 <span class="comment">% http://www.saliencytoolbox.net</span>0022 0023 <a name="_sub0" href="#_subfunctions" class="code">function [output,newStates] = LTUsimulate(LTUnetwork,states,inputs,numIter)</a>0024 0025 <span class="comment">% do the simulation cycles</span>0026 <span class="keyword">for</span> iter = 1:numIter0027 0028 <span class="comment">% set the states of the input units to the input</span>0029 states(LTUnetwork.input_idx) = inputs;0030 0031 <span class="comment">% compute the activity propagation</span>0032 prop = states * LTUnetwork.connections;0033 0034 <span class="comment">% apply thresholds</span>0035 states = double(prop >= LTUnetwork.thresholds);0036 <span class="keyword">end</span>0037 0038 <span class="comment">% assign return values</span>0039 newStates = states;0040 output = states(LTUnetwork.output_idx);</pre></div><hr><address>Generated on Fri 07-Sep-2007 14:42:18 by <strong><a href="http://www.artefact.tk/software/matlab/m2html/">m2html</a></strong> © 2003</address></body></html>⌨️ 快捷键说明
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