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<h1>Source code for macop.operators.crossovers.SimpleCrossover</h1><div class="highlight"><pre>
<span></span><span class="sd">"""Crossover implementation which generated new solution by splitting at mean size best solution and current solution</span>
<span class="sd">"""</span>
<span class="c1"># main imports</span>
<span class="kn">import</span> <span class="nn">random</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">pkgutil</span>
<span class="c1"># module imports</span>
<span class="kn">from</span> <span class="nn">.Crossover</span> <span class="kn">import</span> <span class="n">Crossover</span>
<span class="c1"># import all available solutions</span>
<span class="k">for</span> <span class="n">loader</span><span class="p">,</span> <span class="n">module_name</span><span class="p">,</span> <span class="n">is_pkg</span> <span class="ow">in</span> <span class="n">pkgutil</span><span class="o">.</span><span class="n">walk_packages</span><span class="p">(</span>
<span class="n">path</span><span class="o">=</span><span class="p">[</span><span class="s1">'macop/solutions'</span><span class="p">],</span> <span class="n">prefix</span><span class="o">=</span><span class="s1">'macop.solutions.'</span><span class="p">):</span>
<span class="n">_module</span> <span class="o">=</span> <span class="n">loader</span><span class="o">.</span><span class="n">find_module</span><span class="p">(</span><span class="n">module_name</span><span class="p">)</span><span class="o">.</span><span class="n">load_module</span><span class="p">(</span><span class="n">module_name</span><span class="p">)</span>
<span class="nb">globals</span><span class="p">()[</span><span class="n">module_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">_module</span>
<div class="viewcode-block" id="SimpleCrossover"><a class="viewcode-back" href="../../../../macop/macop.operators.crossovers.SimpleCrossover.html#macop.operators.crossovers.SimpleCrossover.SimpleCrossover">[docs]</a><span class="k">class</span> <span class="nc">SimpleCrossover</span><span class="p">(</span><span class="n">Crossover</span><span class="p">):</span>
<span class="sd">"""Crossover implementation which generated new solution by splitting at mean size best solution and current solution</span>
<span class="sd"> Attributes:</span>
<span class="sd"> kind: {Algorithm} -- specify the kind of operator</span>
<span class="sd"> """</span>
<div class="viewcode-block" id="SimpleCrossover.apply"><a class="viewcode-back" href="../../../../macop/macop.operators.crossovers.SimpleCrossover.html#macop.operators.crossovers.SimpleCrossover.SimpleCrossover.apply">[docs]</a> <span class="k">def</span> <span class="nf">apply</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_solution</span><span class="p">):</span>
<span class="sd">"""Create new solution based on best solution found and solution passed as parameter</span>
<span class="sd"> Args:</span>
<span class="sd"> _solution: {Solution} -- the solution to use for generating new solution</span>
<span class="sd"> Returns:</span>
<span class="sd"> {Solution} -- new generated solution</span>
<span class="sd"> """</span>
<span class="n">size</span> <span class="o">=</span> <span class="n">_solution</span><span class="o">.</span><span class="n">size</span>
<span class="c1"># copy data of solution</span>
<span class="n">firstData</span> <span class="o">=</span> <span class="n">_solution</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
<span class="c1"># get best solution from current algorithm</span>
<span class="n">secondData</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">algo</span><span class="o">.</span><span class="n">bestSolution</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span>
<span class="n">splitIndex</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">size</span> <span class="o">/</span> <span class="mi">2</span><span class="p">)</span>
<span class="k">if</span> <span class="n">random</span><span class="o">.</span><span class="n">uniform</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">></span> <span class="mf">0.5</span><span class="p">:</span>
<span class="n">firstData</span><span class="p">[</span><span class="n">splitIndex</span><span class="p">:(</span><span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)]</span> <span class="o">=</span> <span class="n">firstData</span><span class="p">[</span><span class="n">splitIndex</span><span class="p">:(</span><span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)]</span>
<span class="n">currentData</span> <span class="o">=</span> <span class="n">firstData</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">secondData</span><span class="p">[</span><span class="n">splitIndex</span><span class="p">:(</span><span class="n">size</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)]</span> <span class="o">=</span> <span class="n">firstData</span><span class="p">[</span><span class="n">splitIndex</span><span class="p">:(</span><span class="n">size</span> <span class="o">-</span>
<span class="mi">1</span><span class="p">)]</span>
<span class="n">currentData</span> <span class="o">=</span> <span class="n">secondData</span>
<span class="c1"># create solution of same kind with new data</span>
<span class="n">class_name</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="n">_solution</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span>
<span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="nb">globals</span><span class="p">()[</span><span class="s1">'macop.solutions.'</span> <span class="o">+</span> <span class="n">class_name</span><span class="p">],</span>
<span class="n">class_name</span><span class="p">)(</span><span class="n">currentData</span><span class="p">,</span> <span class="n">size</span><span class="p">)</span></div></div>
</pre></div>
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