macop.operators.discrete.crossovers.html 27 KB

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  90. <div class="section" id="module-macop.operators.discrete.crossovers">
  91. <span id="macop-operators-discrete-crossovers"></span><h1>macop.operators.discrete.crossovers<a class="headerlink" href="#module-macop.operators.discrete.crossovers" title="Permalink to this headline">¶</a></h1>
  92. <p>Crossover implementations for discrete solutions kind</p>
  93. <p class="rubric">Classes</p>
  94. <table class="longtable docutils align-default">
  95. <colgroup>
  96. <col style="width: 10%" />
  97. <col style="width: 90%" />
  98. </colgroup>
  99. <tbody>
  100. <tr class="row-odd"><td><p><a class="reference internal" href="#macop.operators.discrete.crossovers.RandomSplitCrossover" title="macop.operators.discrete.crossovers.RandomSplitCrossover"><code class="xref py py-obj docutils literal notranslate"><span class="pre">RandomSplitCrossover</span></code></a>()</p></td>
  101. <td><p>Crossover implementation which generated new solution by randomly splitting best solution and current solution</p></td>
  102. </tr>
  103. <tr class="row-even"><td><p><a class="reference internal" href="#macop.operators.discrete.crossovers.SimpleCrossover" title="macop.operators.discrete.crossovers.SimpleCrossover"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SimpleCrossover</span></code></a>()</p></td>
  104. <td><p>Crossover implementation which generated new solution by splitting at mean size best solution and current solution</p></td>
  105. </tr>
  106. </tbody>
  107. </table>
  108. <dl class="class">
  109. <dt id="macop.operators.discrete.crossovers.RandomSplitCrossover">
  110. <em class="property">class </em><code class="sig-prename descclassname">macop.operators.discrete.crossovers.</code><code class="sig-name descname">RandomSplitCrossover</code><a class="reference internal" href="../_modules/macop/operators/discrete/crossovers.html#RandomSplitCrossover"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#macop.operators.discrete.crossovers.RandomSplitCrossover" title="Permalink to this definition">¶</a></dt>
  111. <dd><p>Crossover implementation which generated new solution by randomly splitting best solution and current solution</p>
  112. <dl class="attribute">
  113. <dt id="macop.operators.discrete.crossovers.RandomSplitCrossover.kind">
  114. <code class="sig-name descname">kind</code><a class="headerlink" href="#macop.operators.discrete.crossovers.RandomSplitCrossover.kind" title="Permalink to this definition">¶</a></dt>
  115. <dd><p>{KindOperator} – specify the kind of operator</p>
  116. </dd></dl>
  117. <p>Example:</p>
  118. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="c1"># operators import</span>
  119. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.operators.discrete.crossovers</span> <span class="kn">import</span> <span class="n">RandomSplitCrossover</span>
  120. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.operators.discrete.mutators</span> <span class="kn">import</span> <span class="n">SimpleMutation</span>
  121. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># policy import</span>
  122. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.policies.reinforcement</span> <span class="kn">import</span> <span class="n">UCBPolicy</span>
  123. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># solution and algorithm</span>
  124. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.solutions.discrete</span> <span class="kn">import</span> <span class="n">BinarySolution</span>
  125. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.algorithms.mono</span> <span class="kn">import</span> <span class="n">IteratedLocalSearch</span>
  126. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># evaluator import</span>
  127. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.evaluators.discrete.mono</span> <span class="kn">import</span> <span class="n">KnapsackEvaluator</span>
  128. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># evaluator initialization (worths objects passed into data)</span>
  129. <span class="gp">&gt;&gt;&gt; </span><span class="n">worths</span> <span class="o">=</span> <span class="p">[</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="p">]</span>
  130. <span class="gp">&gt;&gt;&gt; </span><span class="n">evaluator</span> <span class="o">=</span> <span class="n">KnapsackEvaluator</span><span class="p">(</span><span class="n">data</span><span class="o">=</span><span class="p">{</span><span class="s1">&#39;worths&#39;</span><span class="p">:</span> <span class="n">worths</span><span class="p">})</span>
  131. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># validator specification (based on weights of each objects)</span>
  132. <span class="gp">&gt;&gt;&gt; </span><span class="n">weights</span> <span class="o">=</span> <span class="p">[</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">20</span><span class="p">,</span> <span class="mi">30</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="p">]</span>
  133. <span class="gp">&gt;&gt;&gt; </span><span class="n">validator</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">solution</span><span class="p">:</span> <span class="kc">True</span> <span class="k">if</span> <span class="nb">sum</span><span class="p">([</span><span class="n">weights</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span> <span class="k">if</span> <span class="n">value</span> <span class="o">==</span> <span class="mi">1</span><span class="p">])</span> <span class="o">&lt;</span> <span class="mi">200</span> <span class="k">else</span> <span class="kc">False</span>
  134. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># initializer function with lambda function</span>
  135. <span class="gp">&gt;&gt;&gt; </span><span class="n">initializer</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">x</span><span class="o">=</span><span class="mi">10</span><span class="p">:</span> <span class="n">BinarySolution</span><span class="o">.</span><span class="n">random</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">validator</span><span class="p">)</span>
  136. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># operators list with crossover and mutation</span>
  137. <span class="gp">&gt;&gt;&gt; </span><span class="n">random_split_crossover</span> <span class="o">=</span> <span class="n">RandomSplitCrossover</span><span class="p">()</span>
  138. <span class="gp">&gt;&gt;&gt; </span><span class="n">simple_mutation</span> <span class="o">=</span> <span class="n">SimpleMutation</span><span class="p">()</span>
  139. <span class="gp">&gt;&gt;&gt; </span><span class="n">operators</span> <span class="o">=</span> <span class="p">[</span><span class="n">random_split_crossover</span><span class="p">,</span> <span class="n">simple_mutation</span><span class="p">]</span>
  140. <span class="gp">&gt;&gt;&gt; </span><span class="n">policy</span> <span class="o">=</span> <span class="n">UCBPolicy</span><span class="p">(</span><span class="n">operators</span><span class="p">)</span>
  141. <span class="gp">&gt;&gt;&gt; </span><span class="n">algo</span> <span class="o">=</span> <span class="n">IteratedLocalSearch</span><span class="p">(</span><span class="n">initializer</span><span class="p">,</span> <span class="n">evaluator</span><span class="p">,</span> <span class="n">operators</span><span class="p">,</span> <span class="n">policy</span><span class="p">,</span> <span class="n">validator</span><span class="p">,</span> <span class="n">maximise</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">verbose</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
  142. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># using best solution, simple crossover is applied</span>
  143. <span class="gp">&gt;&gt;&gt; </span><span class="n">best_solution</span> <span class="o">=</span> <span class="n">algo</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
  144. <span class="gp">&gt;&gt;&gt; </span><span class="nb">list</span><span class="p">(</span><span class="n">best_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span>
  145. <span class="go">[1, 1, 1, 0, 1, 0, 1, 1, 1, 0]</span>
  146. <span class="gp">&gt;&gt;&gt; </span><span class="n">new_solution</span> <span class="o">=</span> <span class="n">initializer</span><span class="p">()</span>
  147. <span class="gp">&gt;&gt;&gt; </span><span class="n">mutate_solution</span> <span class="o">=</span> <span class="n">random_split_crossover</span><span class="o">.</span><span class="n">apply</span><span class="p">(</span><span class="n">new_solution</span><span class="p">)</span>
  148. <span class="gp">&gt;&gt;&gt; </span><span class="nb">list</span><span class="p">(</span><span class="n">mutate_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span>
  149. <span class="go">[1, 0, 0, 1, 1, 0, 0, 1, 0, 0]</span>
  150. </pre></div>
  151. </div>
  152. <dl class="method">
  153. <dt id="macop.operators.discrete.crossovers.RandomSplitCrossover.apply">
  154. <code class="sig-name descname">apply</code><span class="sig-paren">(</span><em class="sig-param">solution</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/macop/operators/discrete/crossovers.html#RandomSplitCrossover.apply"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#macop.operators.discrete.crossovers.RandomSplitCrossover.apply" title="Permalink to this definition">¶</a></dt>
  155. <dd><p>Create new solution based on best solution found and solution passed as parameter</p>
  156. <dl class="field-list simple">
  157. <dt class="field-odd">Parameters</dt>
  158. <dd class="field-odd"><p><strong>solution</strong> – {Solution} – the solution to use for generating new solution</p>
  159. </dd>
  160. <dt class="field-even">Returns</dt>
  161. <dd class="field-even"><p>{Solution} – new generated solution</p>
  162. </dd>
  163. </dl>
  164. </dd></dl>
  165. </dd></dl>
  166. <dl class="class">
  167. <dt id="macop.operators.discrete.crossovers.SimpleCrossover">
  168. <em class="property">class </em><code class="sig-prename descclassname">macop.operators.discrete.crossovers.</code><code class="sig-name descname">SimpleCrossover</code><a class="reference internal" href="../_modules/macop/operators/discrete/crossovers.html#SimpleCrossover"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#macop.operators.discrete.crossovers.SimpleCrossover" title="Permalink to this definition">¶</a></dt>
  169. <dd><p>Crossover implementation which generated new solution by splitting at mean size best solution and current solution</p>
  170. <dl class="attribute">
  171. <dt id="macop.operators.discrete.crossovers.SimpleCrossover.kind">
  172. <code class="sig-name descname">kind</code><a class="headerlink" href="#macop.operators.discrete.crossovers.SimpleCrossover.kind" title="Permalink to this definition">¶</a></dt>
  173. <dd><p>{Algorithm} – specify the kind of operator</p>
  174. </dd></dl>
  175. <p>Example:</p>
  176. <div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="c1"># operators import</span>
  177. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.operators.discrete.crossovers</span> <span class="kn">import</span> <span class="n">SimpleCrossover</span>
  178. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.operators.discrete.mutators</span> <span class="kn">import</span> <span class="n">SimpleMutation</span>
  179. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># policy import</span>
  180. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.policies.reinforcement</span> <span class="kn">import</span> <span class="n">UCBPolicy</span>
  181. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># solution and algorithm</span>
  182. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.solutions.discrete</span> <span class="kn">import</span> <span class="n">BinarySolution</span>
  183. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.algorithms.mono</span> <span class="kn">import</span> <span class="n">IteratedLocalSearch</span>
  184. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># evaluator import</span>
  185. <span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">macop.evaluators.discrete.mono</span> <span class="kn">import</span> <span class="n">KnapsackEvaluator</span>
  186. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># evaluator initialization (worths objects passed into data)</span>
  187. <span class="gp">&gt;&gt;&gt; </span><span class="n">worths</span> <span class="o">=</span> <span class="p">[</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">20</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="p">]</span>
  188. <span class="gp">&gt;&gt;&gt; </span><span class="n">evaluator</span> <span class="o">=</span> <span class="n">KnapsackEvaluator</span><span class="p">(</span><span class="n">data</span><span class="o">=</span><span class="p">{</span><span class="s1">&#39;worths&#39;</span><span class="p">:</span> <span class="n">worths</span><span class="p">})</span>
  189. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># validator specification (based on weights of each objects)</span>
  190. <span class="gp">&gt;&gt;&gt; </span><span class="n">weights</span> <span class="o">=</span> <span class="p">[</span> <span class="n">random</span><span class="o">.</span><span class="n">randint</span><span class="p">(</span><span class="mi">20</span><span class="p">,</span> <span class="mi">30</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">10</span><span class="p">)</span> <span class="p">]</span>
  191. <span class="gp">&gt;&gt;&gt; </span><span class="n">validator</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">solution</span><span class="p">:</span> <span class="kc">True</span> <span class="k">if</span> <span class="nb">sum</span><span class="p">([</span><span class="n">weights</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span> <span class="k">if</span> <span class="n">value</span> <span class="o">==</span> <span class="mi">1</span><span class="p">])</span> <span class="o">&lt;</span> <span class="mi">200</span> <span class="k">else</span> <span class="kc">False</span>
  192. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># initializer function with lambda function</span>
  193. <span class="gp">&gt;&gt;&gt; </span><span class="n">initializer</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">x</span><span class="o">=</span><span class="mi">10</span><span class="p">:</span> <span class="n">BinarySolution</span><span class="o">.</span><span class="n">random</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">validator</span><span class="p">)</span>
  194. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># operators list with crossover and mutation</span>
  195. <span class="gp">&gt;&gt;&gt; </span><span class="n">simple_crossover</span> <span class="o">=</span> <span class="n">SimpleCrossover</span><span class="p">()</span>
  196. <span class="gp">&gt;&gt;&gt; </span><span class="n">simple_mutation</span> <span class="o">=</span> <span class="n">SimpleMutation</span><span class="p">()</span>
  197. <span class="gp">&gt;&gt;&gt; </span><span class="n">operators</span> <span class="o">=</span> <span class="p">[</span><span class="n">simple_crossover</span><span class="p">,</span> <span class="n">simple_mutation</span><span class="p">]</span>
  198. <span class="gp">&gt;&gt;&gt; </span><span class="n">policy</span> <span class="o">=</span> <span class="n">UCBPolicy</span><span class="p">(</span><span class="n">operators</span><span class="p">)</span>
  199. <span class="gp">&gt;&gt;&gt; </span><span class="n">algo</span> <span class="o">=</span> <span class="n">IteratedLocalSearch</span><span class="p">(</span><span class="n">initializer</span><span class="p">,</span> <span class="n">evaluator</span><span class="p">,</span> <span class="n">operators</span><span class="p">,</span> <span class="n">policy</span><span class="p">,</span> <span class="n">validator</span><span class="p">,</span> <span class="n">maximise</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">verbose</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
  200. <span class="gp">&gt;&gt;&gt; </span><span class="c1"># using best solution, simple crossover is applied</span>
  201. <span class="gp">&gt;&gt;&gt; </span><span class="n">best_solution</span> <span class="o">=</span> <span class="n">algo</span><span class="o">.</span><span class="n">run</span><span class="p">(</span><span class="mi">100</span><span class="p">)</span>
  202. <span class="gp">&gt;&gt;&gt; </span><span class="nb">list</span><span class="p">(</span><span class="n">best_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span>
  203. <span class="go">[1, 1, 0, 1, 0, 1, 1, 1, 0, 1]</span>
  204. <span class="gp">&gt;&gt;&gt; </span><span class="n">new_solution</span> <span class="o">=</span> <span class="n">initializer</span><span class="p">()</span>
  205. <span class="gp">&gt;&gt;&gt; </span><span class="n">mutate_solution</span> <span class="o">=</span> <span class="n">simple_crossover</span><span class="o">.</span><span class="n">apply</span><span class="p">(</span><span class="n">new_solution</span><span class="p">)</span>
  206. <span class="gp">&gt;&gt;&gt; </span><span class="nb">list</span><span class="p">(</span><span class="n">mutate_solution</span><span class="o">.</span><span class="n">_data</span><span class="p">)</span>
  207. <span class="go">[0, 1, 0, 0, 0, 1, 1, 1, 0, 1]</span>
  208. </pre></div>
  209. </div>
  210. <dl class="method">
  211. <dt id="macop.operators.discrete.crossovers.SimpleCrossover.apply">
  212. <code class="sig-name descname">apply</code><span class="sig-paren">(</span><em class="sig-param">solution</em><span class="sig-paren">)</span><a class="reference internal" href="../_modules/macop/operators/discrete/crossovers.html#SimpleCrossover.apply"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#macop.operators.discrete.crossovers.SimpleCrossover.apply" title="Permalink to this definition">¶</a></dt>
  213. <dd><p>Create new solution based on best solution found and solution passed as parameter</p>
  214. <dl class="field-list simple">
  215. <dt class="field-odd">Parameters</dt>
  216. <dd class="field-odd"><p><strong>solution</strong> – {Solution} – the solution to use for generating new solution</p>
  217. </dd>
  218. <dt class="field-even">Returns</dt>
  219. <dd class="field-even"><p>{Solution} – new generated solution</p>
  220. </dd>
  221. </dl>
  222. </dd></dl>
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