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<div class="subTitle">org.jgrapht.alg</div>
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<h2 title="Class TransitiveReduction" class="title">Class TransitiveReduction</h2>
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<li>org.jgrapht.alg.TransitiveReduction</li>
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<pre>public class <span class="strong">TransitiveReduction</span>
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extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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<div class="block">An implementation of Harry Hsu's <a
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href="https://en.wikipedia.org/wiki/Transitive_reduction">transitive
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reduction algorithm</a>.
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<p>cf. <a
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href="http://projects.csail.mit.edu/jacm/References/hsu1975:11.html">Harry
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Hsu. "An algorithm for finding a minimal equivalent graph of a digraph.",
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Journal of the ACM, 22(1):11-16, January 1975.</a></p>
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<p>This is a port from a python example by Michael Clerx, posted as an answer
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to a question about <a href=
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"http://stackoverflow.com/questions/1690953/transitive-reduction-algorithm-pseudocode">
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transitive reduction algorithm pseudocode</a> on <a
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href="http://stackoverflow.com">Stack Overflow</a></p></div>
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<dl><dt><span class="strong">Since:</span></dt>
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<dd>Aug 13, 2015</dd>
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<dt><span class="strong">Author:</span></dt>
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<dd>Christophe Thiebaud</dd></dl>
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<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static <a href="../../../org/jgrapht/alg/TransitiveReduction.html" title="class in org.jgrapht.alg">TransitiveReduction</a></code></td>
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<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/TransitiveReduction.html#INSTANCE">INSTANCE</a></strong></code>
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<div class="block">Singleton instance.</div>
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<td class="colFirst"><code><V,E> void</code></td>
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<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/TransitiveReduction.html#reduce(org.jgrapht.DirectedGraph)">reduce</a></strong>(<a href="../../../org/jgrapht/DirectedGraph.html" title="interface in org.jgrapht">DirectedGraph</a><V,E> directedGraph)</code>
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<div class="block">This method will remove all transitive edges from the graph passed as
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input parameter.</div>
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<h4>INSTANCE</h4>
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<pre>public static final <a href="../../../org/jgrapht/alg/TransitiveReduction.html" title="class in org.jgrapht.alg">TransitiveReduction</a> INSTANCE</pre>
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<div class="block">Singleton instance.</div>
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<h4>reduce</h4>
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<pre>public <V,E> void reduce(<a href="../../../org/jgrapht/DirectedGraph.html" title="interface in org.jgrapht">DirectedGraph</a><V,E> directedGraph)</pre>
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<div class="block">This method will remove all transitive edges from the graph passed as
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input parameter.
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<p>You may want to clone the graph before, as transitive edges will be
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pitilessly removed.</p>
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e.g.
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<pre>
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{
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@code
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DirectedGraph<V, T> soonToBePrunedDirectedGraph;
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TransitiveReduction.INSTANCE.reduce(soonToBePrunedDirectedGraph);
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// pruned !
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}
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</pre></div>
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<dl><dt><span class="strong">Parameters:</span></dt><dd><code>directedGraph</code> - the directed graph that will be reduced transitively</dd></dl>
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