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Old engine for Continuous Time Bayesian Networks. Superseded by reCTBN. 🐍 https://github.com/madlabunimib/PyCTBN
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<title>PyCTBN.optimizers package &mdash; PyCTBN 2.0 documentation</title>
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<p class="caption"><span class="caption-text">Contents:</span></p>
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<li class="toctree-l1"><a class="reference internal" href="examples.html">Examples</a><ul>
<li class="toctree-l2"><a class="reference internal" href="examples.html#installation-usage">Installation/Usage</a></li>
<li class="toctree-l2"><a class="reference internal" href="examples.html#implementing-your-own-data-importer">Implementing your own data importer</a></li>
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<div class="section" id="PyCTBN-optimizers-package">
<h1>PyCTBN.optimizers package<a class="headerlink" href="#PyCTBN-optimizers-package" title="Permalink to this headline"></a></h1>
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<div class="section" id="submodules">
<h2>Submodules<a class="headerlink" href="#submodules" title="Permalink to this headline"></a></h2>
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<div class="section" id="module-PyCTBN.optimizers.constraint_based_optimizer">
<span id="PyCTBN-optimizers-constraint-based-optimizer-module"></span><h2>PyCTBN.optimizers.constraint_based_optimizer module<a class="headerlink" href="#module-PyCTBN.optimizers.constraint_based_optimizer" title="Permalink to this headline"></a></h2>
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<dl class="py class">
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<dt id="PyCTBN.optimizers.constraint_based_optimizer.ConstraintBasedOptimizer">
<em class="property">class </em><code class="sig-prename descclassname">PyCTBN.optimizers.constraint_based_optimizer.</code><code class="sig-name descname">ConstraintBasedOptimizer</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">node_id</span><span class="p">:</span> <span class="n">str</span></em>, <em class="sig-param"><span class="n">structure_estimator</span><span class="p">:</span> <span class="n"><a class="reference internal" href="PyCTBN.estimators.html#PyCTBN.estimators.structure_estimator.StructureEstimator" title="PyCTBN.estimators.structure_estimator.StructureEstimator">PyCTBN.estimators.structure_estimator.StructureEstimator</a></span></em>, <em class="sig-param"><span class="n">tot_vars_count</span><span class="p">:</span> <span class="n">int</span></em><span class="sig-paren">)</span><a class="headerlink" href="#PyCTBN.optimizers.constraint_based_optimizer.ConstraintBasedOptimizer" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#PyCTBN.optimizers.optimizer.Optimizer" title="PyCTBN.optimizers.optimizer.Optimizer"><code class="xref py py-class docutils literal notranslate"><span class="pre">PyCTBN.optimizers.optimizer.Optimizer</span></code></a></p>
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<p>Optimizer class that implement a CTPC Algorithm</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>node_id</strong> (<em>string</em>) – current node’s id</p></li>
<li><p><strong>structure_estimator</strong> (<em>class:'StructureEstimator'</em>) – a structure estimator object with the information about the net</p></li>
<li><p><strong>tot_vars_count</strong> (<em>int</em>) – number of variables in the dataset</p></li>
</ul>
</dd>
</dl>
<dl class="py method">
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<dt id="PyCTBN.optimizers.constraint_based_optimizer.ConstraintBasedOptimizer.optimize_structure">
<code class="sig-name descname">optimize_structure</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#PyCTBN.optimizers.constraint_based_optimizer.ConstraintBasedOptimizer.optimize_structure" title="Permalink to this definition"></a></dt>
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<dd><p>Compute Optimization process for a structure_estimator by using a CTPC Algorithm</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>the estimated structure for the node</p>
</dd>
<dt class="field-even">Return type</dt>
<dd class="field-even"><p>List</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
</div>
Update Setup
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<div class="section" id="module-PyCTBN.optimizers.hill_climbing_search">
<span id="PyCTBN-optimizers-hill-climbing-search-module"></span><h2>PyCTBN.optimizers.hill_climbing_search module<a class="headerlink" href="#module-PyCTBN.optimizers.hill_climbing_search" title="Permalink to this headline"></a></h2>
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<dl class="py class">
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<dt id="PyCTBN.optimizers.hill_climbing_search.HillClimbing">
<em class="property">class </em><code class="sig-prename descclassname">PyCTBN.optimizers.hill_climbing_search.</code><code class="sig-name descname">HillClimbing</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">node_id</span><span class="p">:</span> <span class="n">str</span></em>, <em class="sig-param"><span class="n">structure_estimator</span><span class="p">:</span> <span class="n"><a class="reference internal" href="PyCTBN.estimators.html#PyCTBN.estimators.structure_estimator.StructureEstimator" title="PyCTBN.estimators.structure_estimator.StructureEstimator">PyCTBN.estimators.structure_estimator.StructureEstimator</a></span></em>, <em class="sig-param"><span class="n">max_parents</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">iterations_number</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">40</span></em>, <em class="sig-param"><span class="n">patience</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">None</span></em><span class="sig-paren">)</span><a class="headerlink" href="#PyCTBN.optimizers.hill_climbing_search.HillClimbing" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#PyCTBN.optimizers.optimizer.Optimizer" title="PyCTBN.optimizers.optimizer.Optimizer"><code class="xref py py-class docutils literal notranslate"><span class="pre">PyCTBN.optimizers.optimizer.Optimizer</span></code></a></p>
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<p>Optimizer class that implement Hill Climbing Search</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>node_id</strong> (<em>string</em>) – current node’s id</p></li>
<li><p><strong>structure_estimator</strong> (<em>class:'StructureEstimator'</em>) – a structure estimator object with the information about the net</p></li>
<li><p><strong>max_parents</strong> (<em>int</em><em>, </em><em>optional</em>) – maximum number of parents for each variable. If None, disabled, default to None</p></li>
<li><p><strong>iterations_number</strong> (<em>int</em><em>, </em><em>optional</em>) – maximum number of optimization algorithm’s iteration, default to 40</p></li>
<li><p><strong>patience</strong> (<em>int</em><em>, </em><em>optional</em>) – number of iteration without any improvement before to stop the search.If None, disabled, default to None</p></li>
</ul>
</dd>
</dl>
<dl class="py method">
Update Setup
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<dt id="PyCTBN.optimizers.hill_climbing_search.HillClimbing.optimize_structure">
<code class="sig-name descname">optimize_structure</code><span class="sig-paren">(</span><span class="sig-paren">)</span> &#x2192; List<a class="headerlink" href="#PyCTBN.optimizers.hill_climbing_search.HillClimbing.optimize_structure" title="Permalink to this definition"></a></dt>
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<dd><p>Compute Optimization process for a structure_estimator by using a Hill Climbing Algorithm</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>the estimated structure for the node</p>
</dd>
<dt class="field-even">Return type</dt>
<dd class="field-even"><p>List</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
</div>
Update Setup
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<div class="section" id="module-PyCTBN.optimizers.optimizer">
<span id="PyCTBN-optimizers-optimizer-module"></span><h2>PyCTBN.optimizers.optimizer module<a class="headerlink" href="#module-PyCTBN.optimizers.optimizer" title="Permalink to this headline"></a></h2>
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<dl class="py class">
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<dt id="PyCTBN.optimizers.optimizer.Optimizer">
<em class="property">class </em><code class="sig-prename descclassname">PyCTBN.optimizers.optimizer.</code><code class="sig-name descname">Optimizer</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">node_id</span><span class="p">:</span> <span class="n">str</span></em>, <em class="sig-param"><span class="n">structure_estimator</span><span class="p">:</span> <span class="n"><a class="reference internal" href="PyCTBN.estimators.html#PyCTBN.estimators.structure_estimator.StructureEstimator" title="PyCTBN.estimators.structure_estimator.StructureEstimator">PyCTBN.estimators.structure_estimator.StructureEstimator</a></span></em><span class="sig-paren">)</span><a class="headerlink" href="#PyCTBN.optimizers.optimizer.Optimizer" title="Permalink to this definition"></a></dt>
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<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">abc.ABC</span></code></p>
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<p>Interface class for all the optimizer’s child PyCTBN</p>
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<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>node_id</strong> (<em>string</em>) – the node label</p></li>
<li><p><strong>structure_estimator</strong> (<em>class:'StructureEstimator'</em>) – A structureEstimator Object to predict the structure</p></li>
</ul>
</dd>
</dl>
<dl class="py method">
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<dt id="PyCTBN.optimizers.optimizer.Optimizer.optimize_structure">
<em class="property">abstract </em><code class="sig-name descname">optimize_structure</code><span class="sig-paren">(</span><span class="sig-paren">)</span> &#x2192; List<a class="headerlink" href="#PyCTBN.optimizers.optimizer.Optimizer.optimize_structure" title="Permalink to this definition"></a></dt>
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<dd><p>Compute Optimization process for a structure_estimator</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>the estimated structure for the node</p>
</dd>
<dt class="field-even">Return type</dt>
<dd class="field-even"><p>List</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
</div>
Update Setup
4 years ago
<div class="section" id="module-PyCTBN.optimizers.tabu_search">
<span id="PyCTBN-optimizers-tabu-search-module"></span><h2>PyCTBN.optimizers.tabu_search module<a class="headerlink" href="#module-PyCTBN.optimizers.tabu_search" title="Permalink to this headline"></a></h2>
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<dl class="py class">
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<dt id="PyCTBN.optimizers.tabu_search.TabuSearch">
<em class="property">class </em><code class="sig-prename descclassname">PyCTBN.optimizers.tabu_search.</code><code class="sig-name descname">TabuSearch</code><span class="sig-paren">(</span><em class="sig-param"><span class="n">node_id</span><span class="p">:</span> <span class="n">str</span></em>, <em class="sig-param"><span class="n">structure_estimator</span><span class="p">:</span> <span class="n"><a class="reference internal" href="PyCTBN.estimators.html#PyCTBN.estimators.structure_estimator.StructureEstimator" title="PyCTBN.estimators.structure_estimator.StructureEstimator">PyCTBN.estimators.structure_estimator.StructureEstimator</a></span></em>, <em class="sig-param"><span class="n">max_parents</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">iterations_number</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">40</span></em>, <em class="sig-param"><span class="n">patience</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">tabu_length</span><span class="p">:</span> <span class="n">int</span> <span class="o">=</span> <span class="default_value">None</span></em>, <em class="sig-param"><span class="n">tabu_rules_duration</span><span class="o">=</span><span class="default_value">None</span></em><span class="sig-paren">)</span><a class="headerlink" href="#PyCTBN.optimizers.tabu_search.TabuSearch" title="Permalink to this definition"></a></dt>
<dd><p>Bases: <a class="reference internal" href="#PyCTBN.optimizers.optimizer.Optimizer" title="PyCTBN.optimizers.optimizer.Optimizer"><code class="xref py py-class docutils literal notranslate"><span class="pre">PyCTBN.optimizers.optimizer.Optimizer</span></code></a></p>
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<p>Optimizer class that implement Tabu Search</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>node_id</strong> (<em>string</em>) – current node’s id</p></li>
<li><p><strong>structure_estimator</strong> (<em>class:'StructureEstimator'</em>) – a structure estimator object with the information about the net</p></li>
<li><p><strong>max_parents</strong> (<em>int</em><em>, </em><em>optional</em>) – maximum number of parents for each variable. If None, disabled, default to None</p></li>
<li><p><strong>iterations_number</strong> (<em>int</em><em>, </em><em>optional</em>) – maximum number of optimization algorithm’s iteration, default to 40</p></li>
<li><p><strong>patience</strong> (<em>int</em><em>, </em><em>optional</em>) – number of iteration without any improvement before to stop the search.If None, disabled, default to None</p></li>
<li><p><strong>tabu_length</strong> (<em>int</em><em>, </em><em>optional</em>) – maximum lenght of the data structures used in the optimization process, default to None</p></li>
<li><p><strong>tabu_rules_duration</strong> (<em>int</em><em>, </em><em>optional</em>) – number of iterations in which each rule keeps its value, default to None</p></li>
</ul>
</dd>
</dl>
<dl class="py method">
Update Setup
4 years ago
<dt id="PyCTBN.optimizers.tabu_search.TabuSearch.optimize_structure">
<code class="sig-name descname">optimize_structure</code><span class="sig-paren">(</span><span class="sig-paren">)</span> &#x2192; List<a class="headerlink" href="#PyCTBN.optimizers.tabu_search.TabuSearch.optimize_structure" title="Permalink to this definition"></a></dt>
Added docs; refactor test Trajectory
4 years ago
<dd><p>Compute Optimization process for a structure_estimator by using a Hill Climbing Algorithm</p>
<dl class="field-list simple">
<dt class="field-odd">Returns</dt>
<dd class="field-odd"><p>the estimated structure for the node</p>
</dd>
<dt class="field-even">Return type</dt>
<dd class="field-even"><p>List</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
</div>
Update Setup
4 years ago
<div class="section" id="module-PyCTBN.optimizers">
<span id="module-contents"></span><h2>Module contents<a class="headerlink" href="#module-PyCTBN.optimizers" title="Permalink to this headline"></a></h2>
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