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459 460 <!DOCTYPE html> <html lang="en" data-content_root="../"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" /> <title>networkit.components</title> <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=03e43079" /> <link rel="stylesheet" type="text/css" href="../_static/bootstrap-sphinx.css?v=fa2d15c4" /> <link rel="stylesheet" type="text/css" href="../_static/copybutton.css?v=76b2166b" /> <link rel="stylesheet" type="text/css" href="../_static/sg_gallery.css?v=c83e6b79" /> <link rel="stylesheet" type="text/css" href="../_static/bootstrap-treeview/bootstrap-treeview.min.css?v=8176a87d" /> <link rel="stylesheet" href="../_static/style.css" type="text/css" /> <script src="../_static/documentation_options.js?v=c0639414"></script> <script src="../_static/doctools.js?v=fd6eb6e6"></script> <script 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/> </div> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <div class="col-md-9 content"> <section id="module-networkit.components"> <span id="networkit-components"></span><h1>networkit.components<a class="headerlink" href="#module-networkit.components" title="Link to this heading">¶</a></h1> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.BiconnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">BiconnectedComponents</span></span><a class="headerlink" href="#networkit.components.BiconnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="base.html#networkit.base.Algorithm" title="networkit.base.Algorithm"><code class="xref py py-class docutils literal notranslate"><span class="pre">Algorithm</span></code></a></p> <p>Determines the biconnected components of an undirected graph as defined in Tarjan, Robert. Depth-First Search and Linear Graph Algorithms. SIAM J. Comput. Vol 1, No. 2, June 1972.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>G</strong> (<em>networkit.Graph</em>) – The input graph.</p> </dd> </dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.BiconnectedComponents.getComponentSizes"> <span class="sig-name descname"><span class="pre">getComponentSizes</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.BiconnectedComponents.getComponentSizes" title="Link to this definition">¶</a></dt> <dd><p>Returns the map from component id to size.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>dict(int</strong> – A dict that maps each component id to its size.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>int)</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.BiconnectedComponents.getComponents"> <span class="sig-name descname"><span class="pre">getComponents</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.BiconnectedComponents.getComponents" title="Link to this definition">¶</a></dt> <dd><p>Returns all the components, each stored as (unordered) set of nodes.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>A vector of vectors. Each inner vector contains all the nodes inside the component.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>vector[vector[node]]</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.BiconnectedComponents.getComponentsOfNode"> <span class="sig-name descname"><span class="pre">getComponentsOfNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">u</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.BiconnectedComponents.getComponentsOfNode" title="Link to this definition">¶</a></dt> <dd><p>Get the components that contain node u.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>u</strong> (<em>int</em>) – The node.</p> </dd> <dt class="field-even">Returns<span class="colon">:</span></dt> <dd class="field-even"><p>Components that contain node u.</p> </dd> <dt class="field-odd">Return type<span class="colon">:</span></dt> <dd class="field-odd"><p>set</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.BiconnectedComponents.numberOfComponents"> <span class="sig-name descname"><span class="pre">numberOfComponents</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.BiconnectedComponents.numberOfComponents" title="Link to this definition">¶</a></dt> <dd><p>Returns the number of components.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>The number of components.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>int</p> </dd> </dl> </dd></dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">ComponentDecomposition</span></span><a class="headerlink" href="#networkit.components.ComponentDecomposition" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="base.html#networkit.base.Algorithm" title="networkit.base.Algorithm"><code class="xref py py-class docutils literal notranslate"><span class="pre">Algorithm</span></code></a></p> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition.componentOfNode"> <span class="sig-name descname"><span class="pre">componentOfNode</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">v</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ComponentDecomposition.componentOfNode" title="Link to this definition">¶</a></dt> <dd><p>Get the the component in which node <cite>v</cite> is situated.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>v</strong> (<em>int</em>) – The node whose component is asked for.</p> </dd> <dt class="field-even">Returns<span class="colon">:</span></dt> <dd class="field-even"><p>Component in which node <cite>v</cite> is situated.</p> </dd> <dt class="field-odd">Return type<span class="colon">:</span></dt> <dd class="field-odd"><p>int</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition.getComponentSizes"> <span class="sig-name descname"><span class="pre">getComponentSizes</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ComponentDecomposition.getComponentSizes" title="Link to this definition">¶</a></dt> <dd><p>Get the component sizes.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>A dict containing the component ids and their size.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>dict(int <code class="docutils literal notranslate"><span class="pre">:</span></code> int)</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition.getComponents"> <span class="sig-name descname"><span class="pre">getComponents</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ComponentDecomposition.getComponents" title="Link to this definition">¶</a></dt> <dd><p>Get the connected components, each as a list of nodes.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>The connected components.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>list(int)</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition.getPartition"> <span class="sig-name descname"><span class="pre">getPartition</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ComponentDecomposition.getPartition" title="Link to this definition">¶</a></dt> <dd><p>Get a Partition that represents the components.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>A partition representing the found components.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>networkit.Partition</p> </dd> </dl> </dd></dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ComponentDecomposition.numberOfComponents"> <span class="sig-name descname"><span class="pre">numberOfComponents</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ComponentDecomposition.numberOfComponents" title="Link to this definition">¶</a></dt> <dd><p>Get the number of connected components.</p> <dl class="field-list simple"> <dt class="field-odd">Returns<span class="colon">:</span></dt> <dd class="field-odd"><p>The number of connected components.</p> </dd> <dt class="field-even">Return type<span class="colon">:</span></dt> <dd class="field-even"><p>int</p> </dd> </dl> </dd></dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.ConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">ConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a></p> <p>Determines the connected components and associated values for an undirected graph. Create ConnectedComponents for Graph <cite>G</cite>.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>G</strong> (<em>networkit.Graph</em>) – The graph.</p> </dd> </dl> <dl class="py method"> <dt class="sig sig-object py" id="networkit.components.ConnectedComponents.extractLargestConnectedComponent"> <span class="property"><span class="k"><span class="pre">static</span></span><span class="w"> </span></span><span class="sig-name descname"><span class="pre">extractLargestConnectedComponent</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">graph</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">compactGraph</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ConnectedComponents.extractLargestConnectedComponent" title="Link to this definition">¶</a></dt> <dd><p>Constructs a new graph that contains only the nodes inside the largest connected component.</p> <p class="rubric">Notes</p> <p>Available for undirected graphs only.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><ul class="simple"> <li><p><strong>G</strong> (<em>networkit.Graph</em>) – The input graph.</p></li> <li><p><strong>compactGraph</strong> (<em>bool</em><em>, </em><em>optional</em>) – If true, the node ids of the output graph will be compacted (i.e., re-numbered from 0 to n-1). If false, the node ids will not be changed. Default: False</p></li> </ul> </dd> <dt class="field-even">Returns<span class="colon">:</span></dt> <dd class="field-even"><p>A graph that contains only the nodes inside the largest connected component.</p> </dd> <dt class="field-odd">Return type<span class="colon">:</span></dt> <dd class="field-odd"><p>networkit.Graph</p> </dd> </dl> </dd></dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.DynConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">DynConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.DynConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a>, <a class="reference internal" href="dynbase.html#networkit.dynbase.DynAlgorithm" title="networkit.dynbase.DynAlgorithm"><code class="xref py py-class docutils literal notranslate"><span class="pre">DynAlgorithm</span></code></a></p> <p>Determines and updates the connected components of an undirected graph.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>G</strong> (<em>networkit.Graph</em>) – The input graph.</p> </dd> </dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.DynWeaklyConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">DynWeaklyConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.DynWeaklyConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a>, <a class="reference internal" href="dynbase.html#networkit.dynbase.DynAlgorithm" title="networkit.dynbase.DynAlgorithm"><code class="xref py py-class docutils literal notranslate"><span class="pre">DynAlgorithm</span></code></a></p> <p>Determines and updates the weakly connected components of a directed graph.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>G</strong> (<em>networkit.Graph</em>) – The input graph.</p> </dd> </dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.ParallelConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">ParallelConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">coarsening</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">True</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.ParallelConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a></p> <p>Determines the connected components and associated values for an undirected graph.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><ul class="simple"> <li><p><strong>G</strong> (<em>networkit.Graph</em>) – The input graph</p></li> <li><p><strong>coarsening</strong> (<em>bool</em><em>, </em><em>optional</em>) – Specifies whether the main algorithm based on label propagation (LP) shall work recursively (true) or not (false) by coarsening/contracting an LP-computed clustering. Defaults to true since we saw positive effects in terms of running time for many networks. Beware of possible memory implications. Default: True</p></li> </ul> </dd> </dl> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.StronglyConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">StronglyConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.StronglyConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a></p> <p>Computes the strongly connected components of a directed graph.</p> </dd></dl> <dl class="py class"> <dt class="sig sig-object py" id="networkit.components.WeaklyConnectedComponents"> <span class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></span><span class="sig-prename descclassname"><span class="pre">networkit.components.</span></span><span class="sig-name descname"><span class="pre">WeaklyConnectedComponents</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">G</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#networkit.components.WeaklyConnectedComponents" title="Link to this definition">¶</a></dt> <dd><p>Bases: <a class="reference internal" href="#networkit.components.ComponentDecomposition" title="networkit.components.ComponentDecomposition"><code class="xref py py-class docutils literal notranslate"><span class="pre">ComponentDecomposition</span></code></a></p> <p>Determines the weakly connected components of a directed graph.</p> <dl class="field-list simple"> <dt class="field-odd">Parameters<span class="colon">:</span></dt> <dd class="field-odd"><p><strong>G</strong> (<em>networkit.Graph</em>) – The graph.</p> </dd> </dl> </dd></dl> </section> </div> </div> </div> <footer class="footer"> <div class="container"> <p class="pull-right"> <a href="#">Back to top</a> <br/> </p> <p style="float:left; max-width: 70%;"> © Copyright 2018 Humboldt-Universität zu Berlin - Department of Computer Science - Modeling and Analysis of Complex Systems and contributors.<br/> Created using <a href="http://sphinx-doc.org/">Sphinx</a> 9.2.0.<br/> </p> <span style="padding-left: 10px"> <a href="https://networkit.github.io/contact.html">Contact, Imprint and Privacy</a> </span> </div> </footer> </body> </html> |
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