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<div class="highlight"><pre><span class="lineno">3</span><span></span><span class="kn">import</span> <span class="nn">torch</span>
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<span class="lineno">4</span><span class="kn">import</span> <span class="nn">torchvision</span>
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<span class="lineno">5</span><span class="kn">import</span> <span class="nn">torchvision.transforms</span> <span class="k">as</span> <span class="nn">transforms</span>
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<span class="lineno">6</span>
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<span class="lineno">7</span><span class="kn">import</span> <span class="nn">torch.nn</span> <span class="k">as</span> <span class="nn">nn</span>
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<span class="lineno">8</span><span class="kn">import</span> <span class="nn">torch.nn.functional</span> <span class="k">as</span> <span class="nn">F</span>
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<span class="lineno">9</span>
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<span class="lineno">10</span><span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
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<span class="lineno">11</span><span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
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<span class="lineno">12</span>
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<span class="lineno">13</span><span class="kn">from</span> <span class="nn">sklearn.model_selection</span> <span class="kn">import</span> <span class="n">KFold</span>
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<span class="lineno">14</span><span class="kn">from</span> <span class="nn">torch.utils.data.sampler</span> <span class="kn">import</span> <span class="n">SubsetRandomSampler</span></pre></div>
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<div class='section' id='section-1'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-1'>#</a>
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</div>
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<p>Plot the loss of multiple runs together</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">19</span><span class="k">def</span> <span class="nf">PlotLosses</span><span class="p">(</span><span class="n">losses</span><span class="p">,</span> <span class="n">titles</span><span class="p">,</span> <span class="n">save</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
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<span class="lineno">20</span> <span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">()</span>
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<span class="lineno">21</span> <span class="n">fig</span><span class="o">.</span><span class="n">set_size_inches</span><span class="p">(</span><span class="mi">14</span><span class="p">,</span> <span class="mi">22</span><span class="p">)</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-2'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-2'>#</a>
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</div>
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<p>Plot results on 3 subgraphs
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subplot integers:
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nrows
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ncols
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index</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">27</span> <span class="n">sublplot_str_start</span> <span class="o">=</span> <span class="s2">""</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">losses</span><span class="p">))</span> <span class="o">+</span> <span class="s2">"1"</span>
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<span class="lineno">28</span>
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<span class="lineno">29</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="nb">len</span><span class="p">(</span><span class="n">losses</span><span class="p">)):</span>
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<span class="lineno">30</span> <span class="n">subplot</span> <span class="o">=</span> <span class="n">sublplot_str_start</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span>
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<span class="lineno">31</span> <span class="n">loss</span> <span class="o">=</span> <span class="n">losses</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
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<span class="lineno">32</span> <span class="n">title</span> <span class="o">=</span> <span class="n">titles</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
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<span class="lineno">33</span>
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<span class="lineno">34</span> <span class="n">ax</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">subplot</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="n">subplot</span><span class="p">))</span>
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<span class="lineno">35</span> <span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">loss</span><span class="p">)),</span> <span class="n">loss</span><span class="p">)</span>
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<span class="lineno">36</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s2">"Epoch"</span><span class="p">)</span>
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<span class="lineno">37</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_title</span><span class="p">(</span><span class="n">title</span><span class="p">)</span>
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<span class="lineno">38</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s2">"Loss"</span><span class="p">)</span></pre></div>
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</div>
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<div class='section' id='section-3'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-3'>#</a>
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</div>
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<p>Save Figure</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">41</span> <span class="k">if</span> <span class="n">save</span><span class="p">:</span>
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<span class="lineno">42</span> <span class="n">plt</span><span class="o">.</span><span class="n">savefig</span><span class="p">(</span><span class="n">save</span><span class="p">)</span>
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<span class="lineno">43</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">44</span> <span class="n">plt</span><span class="o">.</span><span class="n">show</span><span class="p">()</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-4'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-4'>#</a>
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</div>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">48</span><span class="k">def</span> <span class="nf">ClassSpecificTestCifar10</span><span class="p">(</span><span class="n">net</span><span class="p">,</span> <span class="n">testdata</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
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<span class="lineno">49</span> <span class="n">classes</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'plane'</span><span class="p">,</span> <span class="s1">'car'</span><span class="p">,</span> <span class="s1">'bird'</span><span class="p">,</span> <span class="s1">'cat'</span><span class="p">,</span><span class="s1">'deer'</span><span class="p">,</span> <span class="s1">'dog'</span><span class="p">,</span> <span class="s1">'frog'</span><span class="p">,</span> <span class="s1">'horse'</span><span class="p">,</span> <span class="s1">'ship'</span><span class="p">,</span> <span class="s1">'truck'</span><span class="p">)</span>
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<span class="lineno">50</span> <span class="n">class_correct</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="mf">0.</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>
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<span class="lineno">51</span> <span class="n">class_total</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="mf">0.</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>
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<span class="lineno">52</span> <span class="k">with</span> <span class="n">torch</span><span class="o">.</span><span class="n">no_grad</span><span class="p">():</span>
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<span class="lineno">53</span> <span class="k">for</span> <span class="n">data</span> <span class="ow">in</span> <span class="n">testdata</span><span class="p">:</span>
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<span class="lineno">54</span> <span class="k">if</span> <span class="n">device</span><span class="p">:</span>
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<span class="lineno">55</span> <span class="n">images</span><span class="p">,</span> <span class="n">labels</span> <span class="o">=</span> <span class="n">data</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">to</span><span class="p">(</span><span class="n">device</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">to</span><span class="p">(</span><span class="n">device</span><span class="p">)</span>
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<span class="lineno">56</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">57</span> <span class="n">images</span><span class="p">,</span> <span class="n">labels</span> <span class="o">=</span> <span class="n">data</span>
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<span class="lineno">58</span>
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<span class="lineno">59</span> <span class="n">outputs</span> <span class="o">=</span> <span class="n">net</span><span class="p">(</span><span class="n">images</span><span class="p">)</span>
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<span class="lineno">60</span> <span class="n">_</span><span class="p">,</span> <span class="n">predicted</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">max</span><span class="p">(</span><span class="n">outputs</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
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<span class="lineno">61</span> <span class="n">c</span> <span class="o">=</span> <span class="p">(</span><span class="n">predicted</span> <span class="o">==</span> <span class="n">labels</span><span class="p">)</span><span class="o">.</span><span class="n">squeeze</span><span class="p">()</span>
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<span class="lineno">62</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">4</span><span class="p">):</span>
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<span class="lineno">63</span> <span class="n">label</span> <span class="o">=</span> <span class="n">labels</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
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<span class="lineno">64</span> <span class="n">class_correct</span><span class="p">[</span><span class="n">label</span><span class="p">]</span> <span class="o">+=</span> <span class="n">c</span><span class="p">[</span><span class="n">i</span><span class="p">]</span><span class="o">.</span><span class="n">item</span><span class="p">()</span>
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<span class="lineno">65</span> <span class="n">class_total</span><span class="p">[</span><span class="n">label</span><span class="p">]</span> <span class="o">+=</span> <span class="mi">1</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-5'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-5'>#</a>
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</div>
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<p>Print out</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">68</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>
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<span class="lineno">69</span> <span class="nb">print</span><span class="p">(</span><span class="s1">'Accuracy of </span><span class="si">%5s</span><span class="s1"> : </span><span class="si">%2d</span><span class="s1"> </span><span class="si">%%</span><span class="s1">'</span> <span class="o">%</span> <span class="p">(</span>
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<span class="lineno">70</span> <span class="n">classes</span><span class="p">[</span><span class="n">i</span><span class="p">],</span> <span class="mi">100</span> <span class="o">*</span> <span class="n">class_correct</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="o">/</span> <span class="n">class_total</span><span class="p">[</span><span class="n">i</span><span class="p">]))</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-6'>
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<div class='docs'>
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<div class='section-link'>
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<a href='#section-6'>#</a>
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</div>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="lineno">74</span><span class="k">def</span> <span class="nf">GetActivation</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="s2">"relu"</span><span class="p">):</span>
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<span class="lineno">75</span> <span class="k">if</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"relu"</span><span class="p">:</span>
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<span class="lineno">76</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">ReLU</span><span class="p">()</span>
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<span class="lineno">77</span> <span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"leakyrelu"</span><span class="p">:</span>
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<span class="lineno">78</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">LeakyReLU</span><span class="p">()</span>
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<span class="lineno">79</span> <span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Sigmoid"</span><span class="p">:</span>
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<span class="lineno">80</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">Sigmoid</span><span class="p">()</span>
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<span class="lineno">81</span> <span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Tanh"</span><span class="p">:</span>
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<span class="lineno">82</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">Tanh</span><span class="p">()</span>
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<span class="lineno">83</span> <span class="k">elif</span> <span class="n">name</span> <span class="o">==</span> <span class="s2">"Identity"</span><span class="p">:</span>
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<span class="lineno">84</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">Identity</span><span class="p">()</span>
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<span class="lineno">85</span> <span class="k">else</span><span class="p">:</span>
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<span class="lineno">86</span> <span class="k">return</span> <span class="n">nn</span><span class="o">.</span><span class="n">ReLU</span><span class="p">()</span></pre></div>
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