tre-1 / tools /maltparser-1.9.2 /docs /api /src-html /org /maltparser /parser /DeterministicParser.html
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| <pre><span class="sourceLineNo">001</span>package org.maltparser.parser;<a name="line.1"></a> | |
| <span class="sourceLineNo">002</span><a name="line.2"></a> | |
| <span class="sourceLineNo">003</span>import org.maltparser.core.exception.MaltChainedException;<a name="line.3"></a> | |
| <span class="sourceLineNo">004</span>import org.maltparser.core.feature.FeatureModel;<a name="line.4"></a> | |
| <span class="sourceLineNo">005</span>import org.maltparser.core.symbol.SymbolTableHandler;<a name="line.5"></a> | |
| <span class="sourceLineNo">006</span>import org.maltparser.core.syntaxgraph.DependencyStructure;<a name="line.6"></a> | |
| <span class="sourceLineNo">007</span><a name="line.7"></a> | |
| <span class="sourceLineNo">008</span>import org.maltparser.parser.guide.ClassifierGuide;<a name="line.8"></a> | |
| <span class="sourceLineNo">009</span>import org.maltparser.parser.guide.SingleGuide;<a name="line.9"></a> | |
| <span class="sourceLineNo">010</span>import org.maltparser.parser.history.action.GuideDecision;<a name="line.10"></a> | |
| <span class="sourceLineNo">011</span>import org.maltparser.parser.history.action.GuideUserAction;<a name="line.11"></a> | |
| <span class="sourceLineNo">012</span>/**<a name="line.12"></a> | |
| <span class="sourceLineNo">013</span> * @author Johan Hall<a name="line.13"></a> | |
| <span class="sourceLineNo">014</span> *<a name="line.14"></a> | |
| <span class="sourceLineNo">015</span> */<a name="line.15"></a> | |
| <span class="sourceLineNo">016</span>public class DeterministicParser extends Parser {<a name="line.16"></a> | |
| <span class="sourceLineNo">017</span> private final FeatureModel featureModel;<a name="line.17"></a> | |
| <span class="sourceLineNo">018</span> public DeterministicParser(DependencyParserConfig manager, SymbolTableHandler symbolTableHandler) throws MaltChainedException {<a name="line.18"></a> | |
| <span class="sourceLineNo">019</span> super(manager,symbolTableHandler);<a name="line.19"></a> | |
| <span class="sourceLineNo">020</span> registry.setAlgorithm(this);<a name="line.20"></a> | |
| <span class="sourceLineNo">021</span> setGuide(new SingleGuide(this, ClassifierGuide.GuideMode.CLASSIFY));<a name="line.21"></a> | |
| <span class="sourceLineNo">022</span> String featureModelFileName = manager.getOptionValue("guide", "features").toString().trim();<a name="line.22"></a> | |
| <span class="sourceLineNo">023</span> if (manager.isLoggerInfoEnabled()) {<a name="line.23"></a> | |
| <span class="sourceLineNo">024</span> manager.logDebugMessage(" Feature model : " + featureModelFileName+"\n");<a name="line.24"></a> | |
| <span class="sourceLineNo">025</span> manager.logDebugMessage(" Classifier : " + manager.getOptionValueString("guide", "learner")+"\n"); <a name="line.25"></a> | |
| <span class="sourceLineNo">026</span> }<a name="line.26"></a> | |
| <span class="sourceLineNo">027</span> String dataSplitColumn = manager.getOptionValue("guide", "data_split_column").toString().trim();<a name="line.27"></a> | |
| <span class="sourceLineNo">028</span> String dataSplitStructure = manager.getOptionValue("guide", "data_split_structure").toString().trim();<a name="line.28"></a> | |
| <span class="sourceLineNo">029</span> featureModel = manager.getFeatureModelManager().getFeatureModel(SingleGuide.findURL(featureModelFileName, manager), 0, getParserRegistry(), dataSplitColumn, dataSplitStructure);<a name="line.29"></a> | |
| <span class="sourceLineNo">030</span> }<a name="line.30"></a> | |
| <span class="sourceLineNo">031</span> <a name="line.31"></a> | |
| <span class="sourceLineNo">032</span> public DependencyStructure parse(DependencyStructure parseDependencyGraph) throws MaltChainedException {<a name="line.32"></a> | |
| <span class="sourceLineNo">033</span> parserState.clear();<a name="line.33"></a> | |
| <span class="sourceLineNo">034</span> parserState.initialize(parseDependencyGraph);<a name="line.34"></a> | |
| <span class="sourceLineNo">035</span> currentParserConfiguration = parserState.getConfiguration();<a name="line.35"></a> | |
| <span class="sourceLineNo">036</span> TransitionSystem ts = parserState.getTransitionSystem();<a name="line.36"></a> | |
| <span class="sourceLineNo">037</span> while (!parserState.isTerminalState()) {<a name="line.37"></a> | |
| <span class="sourceLineNo">038</span> GuideUserAction action = ts.getDeterministicAction(parserState.getHistory(), currentParserConfiguration);<a name="line.38"></a> | |
| <span class="sourceLineNo">039</span> if (action == null) {<a name="line.39"></a> | |
| <span class="sourceLineNo">040</span> action = predict();<a name="line.40"></a> | |
| <span class="sourceLineNo">041</span> }<a name="line.41"></a> | |
| <span class="sourceLineNo">042</span> parserState.apply(action);<a name="line.42"></a> | |
| <span class="sourceLineNo">043</span> } <a name="line.43"></a> | |
| <span class="sourceLineNo">044</span>// copyEdges(currentParserConfiguration.getDependencyGraph(), parseDependencyGraph);<a name="line.44"></a> | |
| <span class="sourceLineNo">045</span>// copyDynamicInput(currentParserConfiguration.getDependencyGraph(), parseDependencyGraph);<a name="line.45"></a> | |
| <span class="sourceLineNo">046</span> parseDependencyGraph.linkAllTreesToRoot();<a name="line.46"></a> | |
| <span class="sourceLineNo">047</span> return parseDependencyGraph;<a name="line.47"></a> | |
| <span class="sourceLineNo">048</span> }<a name="line.48"></a> | |
| <span class="sourceLineNo">049</span> <a name="line.49"></a> | |
| <span class="sourceLineNo">050</span> private GuideUserAction predict() throws MaltChainedException {<a name="line.50"></a> | |
| <span class="sourceLineNo">051</span> GuideUserAction currentAction = parserState.getHistory().getEmptyGuideUserAction();<a name="line.51"></a> | |
| <span class="sourceLineNo">052</span> try {<a name="line.52"></a> | |
| <span class="sourceLineNo">053</span> classifierGuide.predict(featureModel,(GuideDecision)currentAction);<a name="line.53"></a> | |
| <span class="sourceLineNo">054</span> while (!parserState.permissible(currentAction)) {<a name="line.54"></a> | |
| <span class="sourceLineNo">055</span> if (classifierGuide.predictFromKBestList(featureModel,(GuideDecision)currentAction) == false) {<a name="line.55"></a> | |
| <span class="sourceLineNo">056</span> currentAction = getParserState().getTransitionSystem().defaultAction(parserState.getHistory(), currentParserConfiguration);<a name="line.56"></a> | |
| <span class="sourceLineNo">057</span> break;<a name="line.57"></a> | |
| <span class="sourceLineNo">058</span> }<a name="line.58"></a> | |
| <span class="sourceLineNo">059</span> }<a name="line.59"></a> | |
| <span class="sourceLineNo">060</span> } catch (NullPointerException e) {<a name="line.60"></a> | |
| <span class="sourceLineNo">061</span> throw new MaltChainedException("The guide cannot be found. ", e);<a name="line.61"></a> | |
| <span class="sourceLineNo">062</span> }<a name="line.62"></a> | |
| <span class="sourceLineNo">063</span> return currentAction;<a name="line.63"></a> | |
| <span class="sourceLineNo">064</span> }<a name="line.64"></a> | |
| <span class="sourceLineNo">065</span> <a name="line.65"></a> | |
| <span class="sourceLineNo">066</span> public void terminate() throws MaltChainedException { }<a name="line.66"></a> | |
| <span class="sourceLineNo">067</span>}<a name="line.67"></a> | |
| </pre> | |
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