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+ <li><a href="../../index.html">Module code</a> »</li>
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+ <li>macop.checkpoints.BasicCheckpoint</li>
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+ <h1>Source code for macop.checkpoints.BasicCheckpoint</h1><div class="highlight"><pre>
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+<span></span><span class="c1"># main imports</span>
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+<span class="kn">import</span> <span class="nn">os</span>
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+<span class="kn">import</span> <span class="nn">logging</span>
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+<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
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+
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+<span class="c1"># module imports</span>
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+<span class="kn">from</span> <span class="nn">.Checkpoint</span> <span class="kn">import</span> <span class="n">Checkpoint</span>
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+
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+
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+<div class="viewcode-block" id="BasicCheckpoint"><a class="viewcode-back" href="../../../macop/macop.checkpoints.BasicCheckpoint.html#macop.checkpoints.BasicCheckpoint.BasicCheckpoint">[docs]</a><span class="k">class</span> <span class="nc">BasicCheckpoint</span><span class="p">(</span><span class="n">Checkpoint</span><span class="p">):</span>
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+ <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_algo</span><span class="p">,</span> <span class="n">_every</span><span class="p">,</span> <span class="n">_filepath</span><span class="p">):</span>
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+ <span class="bp">self</span><span class="o">.</span><span class="n">algo</span> <span class="o">=</span> <span class="n">_algo</span>
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+ <span class="bp">self</span><span class="o">.</span><span class="n">every</span> <span class="o">=</span> <span class="n">_every</span>
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+ <span class="bp">self</span><span class="o">.</span><span class="n">filepath</span> <span class="o">=</span> <span class="n">_filepath</span>
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+
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+<div class="viewcode-block" id="BasicCheckpoint.run"><a class="viewcode-back" href="../../../macop/macop.checkpoints.BasicCheckpoint.html#macop.checkpoints.BasicCheckpoint.BasicCheckpoint.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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+
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+ <span class="c1"># get current best solution</span>
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+ <span class="n">solution</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>
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+
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+ <span class="n">currentEvaluation</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">getGlobalEvaluation</span><span class="p">()</span>
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+
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+ <span class="c1"># backup if necessary</span>
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+ <span class="k">if</span> <span class="n">currentEvaluation</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">every</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
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+
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+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Checkpoint is done into "</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">)</span>
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+
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+ <span class="n">solutionData</span> <span class="o">=</span> <span class="s2">""</span>
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+ <span class="n">solutionSize</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">solution</span><span class="o">.</span><span class="n">data</span><span class="p">)</span>
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+
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+ <span class="k">for</span> <span class="n">index</span><span class="p">,</span> <span class="n">val</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>
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+ <span class="n">solutionData</span> <span class="o">+=</span> <span class="nb">str</span><span class="p">(</span><span class="n">val</span><span class="p">)</span>
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+
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+ <span class="k">if</span> <span class="n">index</span> <span class="o"><</span> <span class="n">solutionSize</span> <span class="o">-</span> <span class="mi">1</span><span class="p">:</span>
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+ <span class="n">solutionData</span> <span class="o">+=</span> <span class="s1">' '</span>
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+
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+ <span class="n">line</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">currentEvaluation</span><span class="p">)</span> <span class="o">+</span> <span class="s1">';'</span> <span class="o">+</span> <span class="n">solutionData</span> <span class="o">+</span> <span class="s1">';'</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span>
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+ <span class="n">solution</span><span class="o">.</span><span class="n">fitness</span><span class="p">())</span> <span class="o">+</span> <span class="s1">';</span><span class="se">\n</span><span class="s1">'</span>
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+
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+ <span class="c1"># check if file exists</span>
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+ <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">):</span>
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+ <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">,</span> <span class="s1">'w'</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
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+ <span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
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+ <span class="k">else</span><span class="p">:</span>
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+ <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">,</span> <span class="s1">'a'</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
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+ <span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">line</span><span class="p">)</span></div>
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+
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+<div class="viewcode-block" id="BasicCheckpoint.load"><a class="viewcode-back" href="../../../macop/macop.checkpoints.BasicCheckpoint.html#macop.checkpoints.BasicCheckpoint.BasicCheckpoint.load">[docs]</a> <span class="k">def</span> <span class="nf">load</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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+
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+ <span class="k">if</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">):</span>
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+
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+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Load best solution from last checkpoint'</span><span class="p">)</span>
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+ <span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">filepath</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
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+
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+ <span class="c1"># get last line and read data</span>
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+ <span class="n">lastline</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">readlines</span><span class="p">()[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
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+ <span class="n">data</span> <span class="o">=</span> <span class="n">lastline</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">';'</span><span class="p">)</span>
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+
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+ <span class="c1"># get evaluation information</span>
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+ <span class="n">globalEvaluation</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
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+
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+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">algo</span><span class="o">.</span><span class="n">parent</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
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+ <span class="bp">self</span><span class="o">.</span><span class="n">algo</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">numberOfEvaluations</span> <span class="o">=</span> <span class="n">globalEvaluation</span>
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+ <span class="k">else</span><span class="p">:</span>
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+ <span class="bp">self</span><span class="o">.</span><span class="n">algo</span><span class="o">.</span><span class="n">numberOfEvaluations</span> <span class="o">=</span> <span class="n">globalEvaluation</span>
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+
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+ <span class="c1"># get best solution data information</span>
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+ <span class="n">solutionData</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="nb">map</span><span class="p">(</span><span class="nb">int</span><span class="p">,</span> <span class="n">data</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">' '</span><span class="p">)))</span>
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+
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+ <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">np</span><span class="o">.</span><span class="n">array</span><span class="p">(</span><span class="n">solutionData</span><span class="p">)</span>
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+ <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">score</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">data</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span>
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+ <span class="k">else</span><span class="p">:</span>
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+ <span class="nb">print</span><span class="p">(</span><span class="s1">'No backup found... Start running'</span><span class="p">)</span>
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+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
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+ <span class="s2">"Can't load backup... Backup filepath not valid in Checkpoint"</span><span class="p">)</span></div></div>
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+</pre></div>
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