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<h1>Source code for torchreid.utils.avgmeter</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">absolute_import</span>
<span class="kn">from</span> <span class="nn">__future__</span> <span class="k">import</span> <span class="n">division</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;AverageMeter&#39;</span><span class="p">]</span>
<div class="viewcode-block" id="AverageMeter"><a class="viewcode-back" href="../../../pkg/utils.html#torchreid.utils.avgmeter.AverageMeter">[docs]</a><span class="k">class</span> <span class="nc">AverageMeter</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="sd">&quot;&quot;&quot;Computes and stores the average and current value.</span>
<span class="sd"> Examples::</span>
<span class="sd"> &gt;&gt;&gt; # Initialize a meter to record loss</span>
<span class="sd"> &gt;&gt;&gt; losses = AverageMeter()</span>
<span class="sd"> &gt;&gt;&gt; # Update meter after every minibatch update</span>
<span class="sd"> &gt;&gt;&gt; losses.update(loss_value, batch_size)</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">reset</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">reset</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">avg</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">sum</span> <span class="o">=</span> <span class="mi">0</span>
<span class="bp">self</span><span class="o">.</span><span class="n">count</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">def</span> <span class="nf">update</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">,</span> <span class="n">n</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">val</span> <span class="o">=</span> <span class="n">val</span>
<span class="bp">self</span><span class="o">.</span><span class="n">sum</span> <span class="o">+=</span> <span class="n">val</span> <span class="o">*</span> <span class="n">n</span>
<span class="bp">self</span><span class="o">.</span><span class="n">count</span> <span class="o">+=</span> <span class="n">n</span>
<span class="bp">self</span><span class="o">.</span><span class="n">avg</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sum</span> <span class="o">/</span> <span class="bp">self</span><span class="o">.</span><span class="n">count</span></div>
</pre></div>
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