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TIEDEMANN / uplug-main-0.3.8 / share / ext / parser / malt / docs / api / src-html / org / maltparser / parser / algorithm / stack / SwapLazyOracle.html 
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<FONT color="green">001</FONT>    package org.maltparser.parser.algorithm.stack;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import java.util.ArrayList;<a name="line.3"></a>
<FONT color="green">004</FONT>    import java.util.Stack;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import org.maltparser.core.exception.MaltChainedException;<a name="line.6"></a>
<FONT color="green">007</FONT>    import org.maltparser.core.syntaxgraph.DependencyStructure;<a name="line.7"></a>
<FONT color="green">008</FONT>    import org.maltparser.core.syntaxgraph.node.DependencyNode;<a name="line.8"></a>
<FONT color="green">009</FONT>    import org.maltparser.parser.DependencyParserConfig;<a name="line.9"></a>
<FONT color="green">010</FONT>    import org.maltparser.parser.Oracle;<a name="line.10"></a>
<FONT color="green">011</FONT>    import org.maltparser.parser.ParserConfiguration;<a name="line.11"></a>
<FONT color="green">012</FONT>    import org.maltparser.parser.history.GuideUserHistory;<a name="line.12"></a>
<FONT color="green">013</FONT>    import org.maltparser.parser.history.action.GuideUserAction;<a name="line.13"></a>
<FONT color="green">014</FONT>    /**<a name="line.14"></a>
<FONT color="green">015</FONT>     * @author Johan Hall<a name="line.15"></a>
<FONT color="green">016</FONT>     *<a name="line.16"></a>
<FONT color="green">017</FONT>     */<a name="line.17"></a>
<FONT color="green">018</FONT>    public class SwapLazyOracle extends Oracle {<a name="line.18"></a>
<FONT color="green">019</FONT>            private ArrayList&lt;Integer&gt; swapArray;<a name="line.19"></a>
<FONT color="green">020</FONT>            private boolean swapArrayActive = false;<a name="line.20"></a>
<FONT color="green">021</FONT>            <a name="line.21"></a>
<FONT color="green">022</FONT>            public SwapLazyOracle(DependencyParserConfig manager, GuideUserHistory history) throws MaltChainedException {<a name="line.22"></a>
<FONT color="green">023</FONT>                    super(manager, history);<a name="line.23"></a>
<FONT color="green">024</FONT>                    setGuideName("swaplazy");<a name="line.24"></a>
<FONT color="green">025</FONT>                    swapArray = new ArrayList&lt;Integer&gt;();<a name="line.25"></a>
<FONT color="green">026</FONT>            }<a name="line.26"></a>
<FONT color="green">027</FONT>            <a name="line.27"></a>
<FONT color="green">028</FONT>            public GuideUserAction predict(DependencyStructure gold, ParserConfiguration configuration) throws MaltChainedException {<a name="line.28"></a>
<FONT color="green">029</FONT>                    StackConfig config = (StackConfig)configuration;<a name="line.29"></a>
<FONT color="green">030</FONT>                    Stack&lt;DependencyNode&gt; stack = config.getStack();<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>                    if (!swapArrayActive) {<a name="line.32"></a>
<FONT color="green">033</FONT>                            createSwapArray(gold);<a name="line.33"></a>
<FONT color="green">034</FONT>                            swapArrayActive = true;<a name="line.34"></a>
<FONT color="green">035</FONT>                    }<a name="line.35"></a>
<FONT color="green">036</FONT>                    if (stack.size() &lt; 2) {<a name="line.36"></a>
<FONT color="green">037</FONT>                            return updateActionContainers(NonProjective.SHIFT, null);<a name="line.37"></a>
<FONT color="green">038</FONT>                    } else {<a name="line.38"></a>
<FONT color="green">039</FONT>                            DependencyNode left = stack.get(stack.size()-2);<a name="line.39"></a>
<FONT color="green">040</FONT>                            DependencyNode right = stack.get(stack.size()-1);<a name="line.40"></a>
<FONT color="green">041</FONT>                            int leftIndex = left.getIndex();<a name="line.41"></a>
<FONT color="green">042</FONT>                            int rightIndex = right.getIndex();<a name="line.42"></a>
<FONT color="green">043</FONT>                            if (swapArray.get(leftIndex) &gt; swapArray.get(rightIndex) &amp;&amp; necessarySwap(gold, config.getDependencyGraph(), right, config.getInput())) {<a name="line.43"></a>
<FONT color="green">044</FONT>                                    return updateActionContainers(NonProjective.SWAP, null);<a name="line.44"></a>
<FONT color="green">045</FONT>                            } else if (!left.isRoot() &amp;&amp; gold.getTokenNode(leftIndex).getHead().getIndex() == rightIndex <a name="line.45"></a>
<FONT color="green">046</FONT>                                            &amp;&amp; nodeComplete(gold, config.getDependencyGraph(), leftIndex)) {<a name="line.46"></a>
<FONT color="green">047</FONT>                                    return updateActionContainers(NonProjective.LEFTARC, gold.getTokenNode(leftIndex).getHeadEdge().getLabelSet());<a name="line.47"></a>
<FONT color="green">048</FONT>                            } else if (gold.getTokenNode(rightIndex).getHead().getIndex() == leftIndex <a name="line.48"></a>
<FONT color="green">049</FONT>                                            &amp;&amp; nodeComplete(gold, config.getDependencyGraph(), rightIndex)) {<a name="line.49"></a>
<FONT color="green">050</FONT>                                    return updateActionContainers(NonProjective.RIGHTARC, gold.getTokenNode(rightIndex).getHeadEdge().getLabelSet());<a name="line.50"></a>
<FONT color="green">051</FONT>                            } else {<a name="line.51"></a>
<FONT color="green">052</FONT>                                    return updateActionContainers(NonProjective.SHIFT, null);<a name="line.52"></a>
<FONT color="green">053</FONT>                            }<a name="line.53"></a>
<FONT color="green">054</FONT>                    }<a name="line.54"></a>
<FONT color="green">055</FONT>            }<a name="line.55"></a>
<FONT color="green">056</FONT>            <a name="line.56"></a>
<FONT color="green">057</FONT>            private boolean nodeComplete(DependencyStructure gold, DependencyStructure parseDependencyGraph, int nodeIndex) {<a name="line.57"></a>
<FONT color="green">058</FONT>                    if (gold.getTokenNode(nodeIndex).hasLeftDependent()) {<a name="line.58"></a>
<FONT color="green">059</FONT>                            if (!parseDependencyGraph.getTokenNode(nodeIndex).hasLeftDependent()) {<a name="line.59"></a>
<FONT color="green">060</FONT>                                    return false;<a name="line.60"></a>
<FONT color="green">061</FONT>                            } else if (gold.getTokenNode(nodeIndex).getLeftmostDependent().getIndex() != parseDependencyGraph.getTokenNode(nodeIndex).getLeftmostDependent().getIndex()) {<a name="line.61"></a>
<FONT color="green">062</FONT>                                    return false;<a name="line.62"></a>
<FONT color="green">063</FONT>                            }<a name="line.63"></a>
<FONT color="green">064</FONT>                    }<a name="line.64"></a>
<FONT color="green">065</FONT>                    if (gold.getTokenNode(nodeIndex).hasRightDependent()) {<a name="line.65"></a>
<FONT color="green">066</FONT>                            if (!parseDependencyGraph.getTokenNode(nodeIndex).hasRightDependent()) {<a name="line.66"></a>
<FONT color="green">067</FONT>                                    return false;<a name="line.67"></a>
<FONT color="green">068</FONT>                            } else if (gold.getTokenNode(nodeIndex).getRightmostDependent().getIndex() != parseDependencyGraph.getTokenNode(nodeIndex).getRightmostDependent().getIndex()) {<a name="line.68"></a>
<FONT color="green">069</FONT>                                    return false;<a name="line.69"></a>
<FONT color="green">070</FONT>                            }<a name="line.70"></a>
<FONT color="green">071</FONT>                    }<a name="line.71"></a>
<FONT color="green">072</FONT>                    return true;<a name="line.72"></a>
<FONT color="green">073</FONT>            }<a name="line.73"></a>
<FONT color="green">074</FONT>            <a name="line.74"></a>
<FONT color="green">075</FONT>            private boolean necessarySwap(DependencyStructure gold, DependencyStructure parse, DependencyNode node, Stack&lt;DependencyNode&gt; input) throws MaltChainedException {<a name="line.75"></a>
<FONT color="green">076</FONT>                    DependencyNode left = node;<a name="line.76"></a>
<FONT color="green">077</FONT>                    int index = input.size() - 1;<a name="line.77"></a>
<FONT color="green">078</FONT>                    if (index &lt; 0) {<a name="line.78"></a>
<FONT color="green">079</FONT>                            return true;<a name="line.79"></a>
<FONT color="green">080</FONT>                    }<a name="line.80"></a>
<FONT color="green">081</FONT>                    DependencyNode right = input.peek();<a name="line.81"></a>
<FONT color="green">082</FONT>                    <a name="line.82"></a>
<FONT color="green">083</FONT>                    int rc = -1;<a name="line.83"></a>
<FONT color="green">084</FONT>                    while (projectiveInterval(parse, left, right)) {<a name="line.84"></a>
<FONT color="green">085</FONT>                            if (rc == right.getIndex()) {<a name="line.85"></a>
<FONT color="green">086</FONT>                                    return false;<a name="line.86"></a>
<FONT color="green">087</FONT>                            }<a name="line.87"></a>
<FONT color="green">088</FONT>                            if (gold.getDependencyNode(node.getIndex()).getHead().getIndex() == right.getIndex()) {<a name="line.88"></a>
<FONT color="green">089</FONT>                                    return !leftComplete(gold, node);<a name="line.89"></a>
<FONT color="green">090</FONT>                            }<a name="line.90"></a>
<FONT color="green">091</FONT>                            if (gold.getDependencyNode(right.getIndex()).getHead().getIndex() == node.getIndex()) {<a name="line.91"></a>
<FONT color="green">092</FONT>                                    if (gold.getDependencyNode(right.getIndex()).hasRightDependent()) {<a name="line.92"></a>
<FONT color="green">093</FONT>                                              rc = gold.getDependencyNode(right.getIndex()).getRightmostProperDescendantIndex();<a name="line.93"></a>
<FONT color="green">094</FONT>                                    }<a name="line.94"></a>
<FONT color="green">095</FONT>                                    else {<a name="line.95"></a>
<FONT color="green">096</FONT>                                      return false;<a name="line.96"></a>
<FONT color="green">097</FONT>                                    } <a name="line.97"></a>
<FONT color="green">098</FONT>                            }<a name="line.98"></a>
<FONT color="green">099</FONT>                            if (index &gt; 0) {<a name="line.99"></a>
<FONT color="green">100</FONT>                                    left = right;<a name="line.100"></a>
<FONT color="green">101</FONT>                                    right = input.get(--index);<a name="line.101"></a>
<FONT color="green">102</FONT>                            } else {<a name="line.102"></a>
<FONT color="green">103</FONT>                                    break;<a name="line.103"></a>
<FONT color="green">104</FONT>                            }<a name="line.104"></a>
<FONT color="green">105</FONT>                    }<a name="line.105"></a>
<FONT color="green">106</FONT>                    <a name="line.106"></a>
<FONT color="green">107</FONT>                    return true;<a name="line.107"></a>
<FONT color="green">108</FONT>            }<a name="line.108"></a>
<FONT color="green">109</FONT>            <a name="line.109"></a>
<FONT color="green">110</FONT>            private boolean projectiveInterval(DependencyStructure parse, DependencyNode left, DependencyNode right) throws MaltChainedException {<a name="line.110"></a>
<FONT color="green">111</FONT>                    int l = swapArray.get(left.getIndex());<a name="line.111"></a>
<FONT color="green">112</FONT>                    int r = swapArray.get(right.getIndex());<a name="line.112"></a>
<FONT color="green">113</FONT>                    DependencyNode node = null;<a name="line.113"></a>
<FONT color="green">114</FONT>                    if (l &gt; r) {<a name="line.114"></a>
<FONT color="green">115</FONT>                            return false;<a name="line.115"></a>
<FONT color="green">116</FONT>                    } else {<a name="line.116"></a>
<FONT color="green">117</FONT>                            for (int i = l + 1; i &lt; r; i++) {<a name="line.117"></a>
<FONT color="green">118</FONT>                                    for (int j = 0; j &lt; swapArray.size(); j++) {<a name="line.118"></a>
<FONT color="green">119</FONT>                                            if (swapArray.get(j) == i) {<a name="line.119"></a>
<FONT color="green">120</FONT>                                                    node = parse.getDependencyNode(j);<a name="line.120"></a>
<FONT color="green">121</FONT>                                                    break;<a name="line.121"></a>
<FONT color="green">122</FONT>                                            }<a name="line.122"></a>
<FONT color="green">123</FONT>                                    }<a name="line.123"></a>
<FONT color="green">124</FONT>                                    while (node.hasHead()) {<a name="line.124"></a>
<FONT color="green">125</FONT>                                            node = node.getHead();<a name="line.125"></a>
<FONT color="green">126</FONT>                                    }<a name="line.126"></a>
<FONT color="green">127</FONT>                                    if (!(node == left || node == right)) {<a name="line.127"></a>
<FONT color="green">128</FONT>                                            return false; <a name="line.128"></a>
<FONT color="green">129</FONT>                                    }<a name="line.129"></a>
<FONT color="green">130</FONT>                            }<a name="line.130"></a>
<FONT color="green">131</FONT>                            return true;<a name="line.131"></a>
<FONT color="green">132</FONT>                    }<a name="line.132"></a>
<FONT color="green">133</FONT>            }<a name="line.133"></a>
<FONT color="green">134</FONT>            <a name="line.134"></a>
<FONT color="green">135</FONT>            private boolean leftComplete(DependencyStructure gold, DependencyNode right) throws MaltChainedException {<a name="line.135"></a>
<FONT color="green">136</FONT>                    if (!gold.getDependencyNode(right.getIndex()).hasLeftDependent()) {<a name="line.136"></a>
<FONT color="green">137</FONT>                            return true;<a name="line.137"></a>
<FONT color="green">138</FONT>                    } else if (!right.hasLeftDependent()) {<a name="line.138"></a>
<FONT color="green">139</FONT>                            return false;<a name="line.139"></a>
<FONT color="green">140</FONT>                    } else if (gold.getDependencyNode(right.getIndex()).getLeftmostDependent().getIndex() == right.getLeftmostDependent().getIndex()) {<a name="line.140"></a>
<FONT color="green">141</FONT>                            return true;<a name="line.141"></a>
<FONT color="green">142</FONT>                    }<a name="line.142"></a>
<FONT color="green">143</FONT>                    return false;<a name="line.143"></a>
<FONT color="green">144</FONT>            }<a name="line.144"></a>
<FONT color="green">145</FONT>            <a name="line.145"></a>
<FONT color="green">146</FONT>            public void finalizeSentence(DependencyStructure dependencyGraph) throws MaltChainedException {<a name="line.146"></a>
<FONT color="green">147</FONT>                    swapArrayActive = false;<a name="line.147"></a>
<FONT color="green">148</FONT>            }<a name="line.148"></a>
<FONT color="green">149</FONT>            <a name="line.149"></a>
<FONT color="green">150</FONT>            public void terminate() throws MaltChainedException {<a name="line.150"></a>
<FONT color="green">151</FONT>                    <a name="line.151"></a>
<FONT color="green">152</FONT>            }<a name="line.152"></a>
<FONT color="green">153</FONT>            <a name="line.153"></a>
<FONT color="green">154</FONT>            private void createSwapArray(DependencyStructure goldDependencyGraph) throws MaltChainedException {<a name="line.154"></a>
<FONT color="green">155</FONT>                    swapArray.clear();<a name="line.155"></a>
<FONT color="green">156</FONT>                    for (int i = 0; i &lt;= goldDependencyGraph.getHighestDependencyNodeIndex(); i++) {<a name="line.156"></a>
<FONT color="green">157</FONT>                            swapArray.add(new Integer(i));<a name="line.157"></a>
<FONT color="green">158</FONT>                    }<a name="line.158"></a>
<FONT color="green">159</FONT>                    createSwapArray(goldDependencyGraph.getDependencyRoot(), 0);<a name="line.159"></a>
<FONT color="green">160</FONT>            }<a name="line.160"></a>
<FONT color="green">161</FONT>            <a name="line.161"></a>
<FONT color="green">162</FONT>            private int createSwapArray(DependencyNode n, int order) {<a name="line.162"></a>
<FONT color="green">163</FONT>                    int o = order; <a name="line.163"></a>
<FONT color="green">164</FONT>                    if (n != null) {<a name="line.164"></a>
<FONT color="green">165</FONT>                            for (int i=0; i &lt; n.getLeftDependentCount(); i++) {<a name="line.165"></a>
<FONT color="green">166</FONT>                                    o = createSwapArray(n.getLeftDependent(i), o);<a name="line.166"></a>
<FONT color="green">167</FONT>                            }<a name="line.167"></a>
<FONT color="green">168</FONT>                            swapArray.set(n.getIndex(), o++);<a name="line.168"></a>
<FONT color="green">169</FONT>                            for (int i=n.getRightDependentCount(); i &gt;= 0; i--) {<a name="line.169"></a>
<FONT color="green">170</FONT>                                    o = createSwapArray(n.getRightDependent(i), o);<a name="line.170"></a>
<FONT color="green">171</FONT>                            }<a name="line.171"></a>
<FONT color="green">172</FONT>                    }<a name="line.172"></a>
<FONT color="green">173</FONT>                    return o;<a name="line.173"></a>
<FONT color="green">174</FONT>            }<a name="line.174"></a>
<FONT color="green">175</FONT>    }<a name="line.175"></a>




























































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