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chore: import upstream snapshot with attribution

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<title>විසරණ සම්භාවිතා ආකෘති (ඩීඩීපීඑම්) පුහුණුව නිරූපණය කිරීම</title>
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View code on Github</a>
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<div class='section' id='section-0'>
<div class='docs doc-strings'>
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<h1><a href="index.html">විසරණ සම්භාවිතා ආකෘති (ඩීඩීපීඑම්) පුහුණුව නිරූපණය</a> කිරීම</h1>
<p><a href="https://colab.research.google.com/github/labmlai/annotated_deep_learning_paper_implementations/blob/master/labml_nn/diffusion/ddpm/experiment.ipynb"><img alt="Open In Colab" src="https://colab.research.google.com/assets/colab-badge.svg"></a></p>
<p>මෙය සෙලෙබා එච්කියු දත්ත කට්ටලය මත ඩීඩීපීඑම් පදනම් කරගත් ආකෘතියක් පුහුණු කරයි. <a href="https://forums.fast.ai/t/download-celeba-hq-dataset/45873/3">fast.ai හි මෙම සාකච්ඡාවේදී</a> බාගත කිරීමේ උපදෙස් ඔබට සොයාගත හැකිය. <a href="#dataset_path"><code class="highlight"><span></span><span class="n">data</span><span class="o">/</span><span class="n">celebA</span></code>
ෆෝල්ඩරය</a> තුළ පින්තූර සුරකින්න.</p>
<p>කඩදාසි ක ක්ෂය සමග ආදර්ශ ඝාතීය වෙනස්වන සාමාන්යය භාවිතා කර<span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">0.9999</span></span></span></span></span> ඇත. සරල බව සඳහා අපි මෙය මඟ හැර ඇත්තෙමු.</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">20</span><span></span><span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">List</span>
<span class="lineno">21</span>
<span class="lineno">22</span><span class="kn">import</span> <span class="nn">torch</span>
<span class="lineno">23</span><span class="kn">import</span> <span class="nn">torch.utils.data</span>
<span class="lineno">24</span><span class="kn">import</span> <span class="nn">torchvision</span>
<span class="lineno">25</span><span class="kn">from</span> <span class="nn">PIL</span> <span class="kn">import</span> <span class="n">Image</span>
<span class="lineno">26</span>
<span class="lineno">27</span><span class="kn">from</span> <span class="nn">labml</span> <span class="kn">import</span> <span class="n">lab</span><span class="p">,</span> <span class="n">tracker</span><span class="p">,</span> <span class="n">experiment</span><span class="p">,</span> <span class="n">monit</span>
<span class="lineno">28</span><span class="kn">from</span> <span class="nn">labml.configs</span> <span class="kn">import</span> <span class="n">BaseConfigs</span><span class="p">,</span> <span class="n">option</span>
<span class="lineno">29</span><span class="kn">from</span> <span class="nn">labml_helpers.device</span> <span class="kn">import</span> <span class="n">DeviceConfigs</span>
<span class="lineno">30</span><span class="kn">from</span> <span class="nn">labml_nn.diffusion.ddpm</span> <span class="kn">import</span> <span class="n">DenoiseDiffusion</span>
<span class="lineno">31</span><span class="kn">from</span> <span class="nn">labml_nn.diffusion.ddpm.unet</span> <span class="kn">import</span> <span class="n">UNet</span></pre></div>
</div>
</div>
<div class='section' id='section-1'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-1'>#</a>
</div>
<h2>වින්යාසකිරීම්</h2>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">34</span><span class="k">class</span> <span class="nc">Configs</span><span class="p">(</span><span class="n">BaseConfigs</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-2'>
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<div class='section-link'>
<a href='#section-2'>#</a>
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<p>ආකෘතියපුහුණු කිරීමේ උපකරණය. <a href="https://docs.labml.ai/api/helpers.html#labml_helpers.device.DeviceConfigs"><code class="highlight"><span></span><span class="n">DeviceConfigs</span></code>
</a> ලබා ගත හැකි CUDA උපාංගයක් අහුලනවා හෝ CPU කිරීමට පෙරනිමි. </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">41</span> <span class="n">device</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span> <span class="o">=</span> <span class="n">DeviceConfigs</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-3'>
<div class='docs'>
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<a href='#section-3'>#</a>
</div>
<p>සඳහාU-Net ආකෘතිය <span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord"><span class="mord" style="color:lightgreen"><span class="mord mathnormal" style="">ϵ</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.33610799999999996em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight" style=""><span class="mord mathnormal mtight" style="margin-right:0.02778em">θ</span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mopen coloredeq eqb" style="">(</span><span class="mord coloredeq eqb" style=""><span class="mord mathnormal" style="">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.2805559999999999em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight" style=""><span class="mord mtight" style=""><span class="mord mathnormal mtight coloredeq eqg" style="">t</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mpunct coloredeq eqb" style="">,</span><span class="mspace" style="margin-right:0.16666666666666666em;"></span><span class="mord coloredeq eqb" style=""><span class="mord mathnormal coloredeq eqg" style="">t</span></span><span class="mclose coloredeq eqb" style="">)</span></span></span></span></span></span> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">44</span> <span class="n">eps_model</span><span class="p">:</span> <span class="n">UNet</span></pre></div>
</div>
</div>
<div class='section' id='section-4'>
<div class='docs'>
<div class='section-link'>
<a href='#section-4'>#</a>
</div>
<p><a href="index.html">ඩීඩීපීඑම් ඇල්ගොරිතම</a> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">46</span> <span class="n">diffusion</span><span class="p">:</span> <span class="n">DenoiseDiffusion</span></pre></div>
</div>
</div>
<div class='section' id='section-5'>
<div class='docs'>
<div class='section-link'>
<a href='#section-5'>#</a>
</div>
<p>රූපයේනාලිකා ගණන. <span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">3</span></span></span></span></span> RGB සඳහා. </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">49</span> <span class="n">image_channels</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">3</span></pre></div>
</div>
</div>
<div class='section' id='section-6'>
<div class='docs'>
<div class='section-link'>
<a href='#section-6'>#</a>
</div>
<p>රූපප්රමාණය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">51</span> <span class="n">image_size</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">32</span></pre></div>
</div>
</div>
<div class='section' id='section-7'>
<div class='docs'>
<div class='section-link'>
<a href='#section-7'>#</a>
</div>
<p>ආරම්භකවිශේෂාංග සිතියමේ නාලිකා ගණන </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">53</span> <span class="n">n_channels</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">64</span></pre></div>
</div>
</div>
<div class='section' id='section-8'>
<div class='docs'>
<div class='section-link'>
<a href='#section-8'>#</a>
</div>
<p>එක්එක් විභේදනයේ නාලිකා අංක ලැයිස්තුව. නාලිකා ගණන වේ <code class="highlight"><span></span><span class="n">channel_multipliers</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="o">*</span> <span class="n">n_channels</span></code>
</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">56</span> <span class="n">channel_multipliers</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">4</span><span class="p">]</span></pre></div>
</div>
</div>
<div class='section' id='section-9'>
<div class='docs'>
<div class='section-link'>
<a href='#section-9'>#</a>
</div>
<p>එක්එක් යෝජනාවේදී අවධානය භාවිතා කළ යුතුද යන්න පෙන්වන බූලියන් ලැයිස්තුව </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">58</span> <span class="n">is_attention</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">int</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="kc">False</span><span class="p">,</span> <span class="kc">False</span><span class="p">,</span> <span class="kc">False</span><span class="p">,</span> <span class="kc">True</span><span class="p">]</span></pre></div>
</div>
</div>
<div class='section' id='section-10'>
<div class='docs'>
<div class='section-link'>
<a href='#section-10'>#</a>
</div>
<p>කාලපියවර ගණන <span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.68333em;vertical-align:0em;"></span><span class="mord coloredeq eqf" style=""><span class="mord mathnormal" style="margin-right:0.13889em">T</span></span></span></span></span></span> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">61</span> <span class="n">n_steps</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1_000</span></pre></div>
</div>
</div>
<div class='section' id='section-11'>
<div class='docs'>
<div class='section-link'>
<a href='#section-11'>#</a>
</div>
<p>කණ්ඩායම්ප්රමාණය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">63</span> <span class="n">batch_size</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">64</span></pre></div>
</div>
</div>
<div class='section' id='section-12'>
<div class='docs'>
<div class='section-link'>
<a href='#section-12'>#</a>
</div>
<p>උත්පාදනයකිරීමට සාම්පල ගණන </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">65</span> <span class="n">n_samples</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">16</span></pre></div>
</div>
</div>
<div class='section' id='section-13'>
<div class='docs'>
<div class='section-link'>
<a href='#section-13'>#</a>
</div>
<p>ඉගෙනුම්අනුපාතය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">67</span> <span class="n">learning_rate</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="mf">2e-5</span></pre></div>
</div>
</div>
<div class='section' id='section-14'>
<div class='docs'>
<div class='section-link'>
<a href='#section-14'>#</a>
</div>
<p>පුහුණුඑපොච් ගණන </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">70</span> <span class="n">epochs</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">1_000</span></pre></div>
</div>
</div>
<div class='section' id='section-15'>
<div class='docs'>
<div class='section-link'>
<a href='#section-15'>#</a>
</div>
<p>දත්තකට්ටලය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">73</span> <span class="n">dataset</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">Dataset</span></pre></div>
</div>
</div>
<div class='section' id='section-16'>
<div class='docs'>
<div class='section-link'>
<a href='#section-16'>#</a>
</div>
<p>දත්තකාරකය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">75</span> <span class="n">data_loader</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">DataLoader</span></pre></div>
</div>
</div>
<div class='section' id='section-17'>
<div class='docs'>
<div class='section-link'>
<a href='#section-17'>#</a>
</div>
<p>ආදම්ප්රශස්තකරණය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">78</span> <span class="n">optimizer</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">optim</span><span class="o">.</span><span class="n">Adam</span></pre></div>
</div>
</div>
<div class='section' id='section-18'>
<div class='docs'>
<div class='section-link'>
<a href='#section-18'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">80</span> <span class="k">def</span> <span class="nf">init</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-19'>
<div class='docs'>
<div class='section-link'>
<a href='#section-19'>#</a>
</div>
<p><span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord"><span class="mord" style="color:lightgreen"><span class="mord mathnormal" style="">ϵ</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.33610799999999996em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight" style=""><span class="mord mathnormal mtight" style="margin-right:0.02778em">θ</span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mopen coloredeq eqb" style="">(</span><span class="mord coloredeq eqb" style=""><span class="mord mathnormal" style="">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.2805559999999999em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight" style=""><span class="mord mtight" style=""><span class="mord mathnormal mtight coloredeq eqg" style="">t</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mpunct coloredeq eqb" style="">,</span><span class="mspace" style="margin-right:0.16666666666666666em;"></span><span class="mord coloredeq eqb" style=""><span class="mord mathnormal coloredeq eqg" style="">t</span></span><span class="mclose coloredeq eqb" style="">)</span></span></span></span></span></span> ආකෘතිය සාදන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">82</span> <span class="bp">self</span><span class="o">.</span><span class="n">eps_model</span> <span class="o">=</span> <span class="n">UNet</span><span class="p">(</span>
<span class="lineno">83</span> <span class="n">image_channels</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">image_channels</span><span class="p">,</span>
<span class="lineno">84</span> <span class="n">n_channels</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">n_channels</span><span class="p">,</span>
<span class="lineno">85</span> <span class="n">ch_mults</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">channel_multipliers</span><span class="p">,</span>
<span class="lineno">86</span> <span class="n">is_attn</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">is_attention</span><span class="p">,</span>
<span class="lineno">87</span> <span class="p">)</span><span class="o">.</span><span class="n">to</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-20'>
<div class='docs'>
<div class='section-link'>
<a href='#section-20'>#</a>
</div>
<p><a href="index.html">DDPM පන්ති</a> නිර්මාණය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">90</span> <span class="bp">self</span><span class="o">.</span><span class="n">diffusion</span> <span class="o">=</span> <span class="n">DenoiseDiffusion</span><span class="p">(</span>
<span class="lineno">91</span> <span class="n">eps_model</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">eps_model</span><span class="p">,</span>
<span class="lineno">92</span> <span class="n">n_steps</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">n_steps</span><span class="p">,</span>
<span class="lineno">93</span> <span class="n">device</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">,</span>
<span class="lineno">94</span> <span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-21'>
<div class='docs'>
<div class='section-link'>
<a href='#section-21'>#</a>
</div>
<p>දත්තකාරකය සාදන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">97</span> <span class="bp">self</span><span class="o">.</span><span class="n">data_loader</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">DataLoader</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">dataset</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">batch_size</span><span class="p">,</span> <span class="n">shuffle</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">pin_memory</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-22'>
<div class='docs'>
<div class='section-link'>
<a href='#section-22'>#</a>
</div>
<p>ප්රශස්තකරණයසාදන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">99</span> <span class="bp">self</span><span class="o">.</span><span class="n">optimizer</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">optim</span><span class="o">.</span><span class="n">Adam</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">eps_model</span><span class="o">.</span><span class="n">parameters</span><span class="p">(),</span> <span class="n">lr</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">learning_rate</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-23'>
<div class='docs'>
<div class='section-link'>
<a href='#section-23'>#</a>
</div>
<p>රූපලොග් වීම </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">102</span> <span class="n">tracker</span><span class="o">.</span><span class="n">set_image</span><span class="p">(</span><span class="s2">&quot;sample&quot;</span><span class="p">,</span> <span class="kc">True</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-24'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-24'>#</a>
</div>
<h3>නියැදිරූප</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">104</span> <span class="k">def</span> <span class="nf">sample</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-25'>
<div class='docs'>
<div class='section-link'>
<a href='#section-25'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">108</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></pre></div>
</div>
</div>
<div class='section' id='section-26'>
<div class='docs'>
<div class='section-link'>
<a href='#section-26'>#</a>
</div>
<p><span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.58056em;vertical-align:-0.15em;"></span><span class="mord"><span class="mord mathnormal">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.32833099999999993em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight coloredeq eqf" style=""><span class="mord mathnormal mtight" style="margin-right:0.13889em">T</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mspace" style="margin-right:0.2777777777777778em;"></span><span class="mrel">∼</span><span class="mspace" style="margin-right:0.2777777777777778em;"></span></span><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathnormal">p</span><span class="mopen">(</span><span class="mord"><span class="mord mathnormal">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.32833099999999993em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight coloredeq eqf" style=""><span class="mord mathnormal mtight" style="margin-right:0.13889em">T</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mclose">)</span><span class="mspace" style="margin-right:0.2777777777777778em;"></span><span class="mrel">=</span><span class="mspace" style="margin-right:0.2777777777777778em;"></span></span><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord mathcal" style="margin-right:0.14736em;">N</span><span class="mopen">(</span><span class="mord"><span class="mord mathnormal">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.32833099999999993em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight coloredeq eqf" style=""><span class="mord mathnormal mtight" style="margin-right:0.13889em">T</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mpunct">;</span><span class="mspace" style="margin-right:0.16666666666666666em;"></span><span class="mord mathbf">0</span><span class="mpunct">,</span><span class="mspace" style="margin-right:0.16666666666666666em;"></span><span class="mord mathbf">I</span><span class="mclose">)</span></span></span></span></span> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">110</span> <span class="n">x</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">randn</span><span class="p">([</span><span class="bp">self</span><span class="o">.</span><span class="n">n_samples</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">image_channels</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">image_size</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">image_size</span><span class="p">],</span>
<span class="lineno">111</span> <span class="n">device</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-27'>
<div class='docs'>
<div class='section-link'>
<a href='#section-27'>#</a>
</div>
<p><span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.68333em;vertical-align:0em;"></span><span class="mord coloredeq eqf" style=""><span class="mord mathnormal" style="margin-right:0.13889em">T</span></span></span></span></span></span> පියවර සඳහා ශබ්දය ඉවත් කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">114</span> <span class="k">for</span> <span class="n">t_</span> <span class="ow">in</span> <span class="n">monit</span><span class="o">.</span><span class="n">iterate</span><span class="p">(</span><span class="s1">&#39;Sample&#39;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">n_steps</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-28'>
<div class='docs'>
<div class='section-link'>
<a href='#section-28'>#</a>
</div>
<p><span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.61508em;vertical-align:0em;"></span><span class="mord coloredeq eqg" style=""><span class="mord mathnormal" style="">t</span></span></span></span></span></span> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">116</span> <span class="n">t</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">n_steps</span> <span class="o">-</span> <span class="n">t_</span> <span class="o">-</span> <span class="mi">1</span></pre></div>
</div>
</div>
<div class='section' id='section-29'>
<div class='docs'>
<div class='section-link'>
<a href='#section-29'>#</a>
</div>
<p>වෙතින්නියැදිය <span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mord" style="color:lightgreen"><span class="mord mathnormal" style="">p</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.33610799999999996em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight" style=""><span class="mord mathnormal mtight" style="margin-right:0.02778em">θ</span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mopen">(</span><span class="mord"><span class="mord mathnormal">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.301108em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight"><span class="mord mtight coloredeq eqg" style=""><span class="mord mathnormal mtight" style="">t</span></span><span class="mbin mtight">−</span><span class="mord mtight">1</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.208331em;"><span></span></span></span></span></span></span><span class="mord">∣</span><span class="mord"><span class="mord mathnormal">x</span><span class="msupsub"><span class="vlist-t vlist-t2"><span class="vlist-r"><span class="vlist" style="height:0.2805559999999999em;"><span style="top:-2.5500000000000003em;margin-left:0em;margin-right:0.05em;"><span class="pstrut" style="height:2.7em;"></span><span class="sizing reset-size6 size3 mtight"><span class="mord mtight coloredeq eqg" style=""><span class="mord mathnormal mtight" style="">t</span></span></span></span></span><span class="vlist-s">​</span></span><span class="vlist-r"><span class="vlist" style="height:0.15em;"><span></span></span></span></span></span></span><span class="mclose">)</span></span></span></span></span> </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">118</span> <span class="n">x</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">diffusion</span><span class="o">.</span><span class="n">p_sample</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">x</span><span class="o">.</span><span class="n">new_full</span><span class="p">((</span><span class="bp">self</span><span class="o">.</span><span class="n">n_samples</span><span class="p">,),</span> <span class="n">t</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="n">torch</span><span class="o">.</span><span class="n">long</span><span class="p">))</span></pre></div>
</div>
</div>
<div class='section' id='section-30'>
<div class='docs'>
<div class='section-link'>
<a href='#section-30'>#</a>
</div>
<p>ලොග්සාම්පල </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">121</span> <span class="n">tracker</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="s1">&#39;sample&#39;</span><span class="p">,</span> <span class="n">x</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-31'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-31'>#</a>
</div>
<h3>දුම්රිය</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">123</span> <span class="k">def</span> <span class="nf">train</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-32'>
<div class='docs'>
<div class='section-link'>
<a href='#section-32'>#</a>
</div>
<p>දත්තසමුදාය හරහා නැවත කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">129</span> <span class="k">for</span> <span class="n">data</span> <span class="ow">in</span> <span class="n">monit</span><span class="o">.</span><span class="n">iterate</span><span class="p">(</span><span class="s1">&#39;Train&#39;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">data_loader</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-33'>
<div class='docs'>
<div class='section-link'>
<a href='#section-33'>#</a>
</div>
<p>ගෝලීයපියවර වැඩි කිරීම </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">131</span> <span class="n">tracker</span><span class="o">.</span><span class="n">add_global_step</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-34'>
<div class='docs'>
<div class='section-link'>
<a href='#section-34'>#</a>
</div>
<p>උපාංගයවෙත දත්ත ගෙනයන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">133</span> <span class="n">data</span> <span class="o">=</span> <span class="n">data</span><span class="o">.</span><span class="n">to</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-35'>
<div class='docs'>
<div class='section-link'>
<a href='#section-35'>#</a>
</div>
<p>අනුක්රමිකශුන්ය කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">136</span> <span class="bp">self</span><span class="o">.</span><span class="n">optimizer</span><span class="o">.</span><span class="n">zero_grad</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-36'>
<div class='docs'>
<div class='section-link'>
<a href='#section-36'>#</a>
</div>
<p>අලාභයගණනය කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">138</span> <span class="n">loss</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">diffusion</span><span class="o">.</span><span class="n">loss</span><span class="p">(</span><span class="n">data</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-37'>
<div class='docs'>
<div class='section-link'>
<a href='#section-37'>#</a>
</div>
<p>අනුක්රමිකගණනය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">140</span> <span class="n">loss</span><span class="o">.</span><span class="n">backward</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-38'>
<div class='docs'>
<div class='section-link'>
<a href='#section-38'>#</a>
</div>
<p>ප්රශස්තිකරණපියවරක් ගන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">142</span> <span class="bp">self</span><span class="o">.</span><span class="n">optimizer</span><span class="o">.</span><span class="n">step</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-39'>
<div class='docs'>
<div class='section-link'>
<a href='#section-39'>#</a>
</div>
<p>අලාභයලුහුබඳින්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">144</span> <span class="n">tracker</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="s1">&#39;loss&#39;</span><span class="p">,</span> <span class="n">loss</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-40'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-40'>#</a>
</div>
<h3>පුහුණුලූපය</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">146</span> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-41'>
<div class='docs'>
<div class='section-link'>
<a href='#section-41'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">150</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="n">monit</span><span class="o">.</span><span class="n">loop</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">epochs</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-42'>
<div class='docs'>
<div class='section-link'>
<a href='#section-42'>#</a>
</div>
<p>ආකෘතියපුහුණු කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">152</span> <span class="bp">self</span><span class="o">.</span><span class="n">train</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-43'>
<div class='docs'>
<div class='section-link'>
<a href='#section-43'>#</a>
</div>
<p>පින්තූරකිහිපයක් සාම්පල කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">154</span> <span class="bp">self</span><span class="o">.</span><span class="n">sample</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-44'>
<div class='docs'>
<div class='section-link'>
<a href='#section-44'>#</a>
</div>
<p>කොන්සෝලයේනව රේඛාවක් </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">156</span> <span class="n">tracker</span><span class="o">.</span><span class="n">new_line</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-45'>
<div class='docs'>
<div class='section-link'>
<a href='#section-45'>#</a>
</div>
<p>ආකෘතියසුරකින්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">158</span> <span class="n">experiment</span><span class="o">.</span><span class="n">save_checkpoint</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-46'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-46'>#</a>
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<h3>සෙලෙබාමූලස්ථානය දත්ත කට්ටලය</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">161</span><span class="k">class</span> <span class="nc">CelebADataset</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">Dataset</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-47'>
<div class='docs'>
<div class='section-link'>
<a href='#section-47'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">166</span> <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">image_size</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span>
<span class="lineno">167</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span></pre></div>
</div>
</div>
<div class='section' id='section-48'>
<div class='docs'>
<div class='section-link'>
<a href='#section-48'>#</a>
</div>
<p>සෙලෙබාපින්තූර ෆෝල්ඩරය </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">170</span> <span class="n">folder</span> <span class="o">=</span> <span class="n">lab</span><span class="o">.</span><span class="n">get_data_path</span><span class="p">()</span> <span class="o">/</span> <span class="s1">&#39;celebA&#39;</span></pre></div>
</div>
</div>
<div class='section' id='section-49'>
<div class='docs'>
<div class='section-link'>
<a href='#section-49'>#</a>
</div>
<p>ගොනුලැයිස්තුව </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">172</span> <span class="bp">self</span><span class="o">.</span><span class="n">_files</span> <span class="o">=</span> <span class="p">[</span><span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">folder</span><span class="o">.</span><span class="n">glob</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;**/*.jpg&#39;</span><span class="p">)]</span></pre></div>
</div>
</div>
<div class='section' id='section-50'>
<div class='docs'>
<div class='section-link'>
<a href='#section-50'>#</a>
</div>
<p>රූපයවෙනස් කර ටෙන්සර් බවට පරිවර්තනය කිරීම සඳහා පරිවර්තනයන් </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">175</span> <span class="bp">self</span><span class="o">.</span><span class="n">_transform</span> <span class="o">=</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Compose</span><span class="p">([</span>
<span class="lineno">176</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Resize</span><span class="p">(</span><span class="n">image_size</span><span class="p">),</span>
<span class="lineno">177</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">ToTensor</span><span class="p">(),</span>
<span class="lineno">178</span> <span class="p">])</span></pre></div>
</div>
</div>
<div class='section' id='section-51'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-51'>#</a>
</div>
<p> දත්තසමුදාය ප්රමාණය</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">180</span> <span class="k">def</span> <span class="fm">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-52'>
<div class='docs'>
<div class='section-link'>
<a href='#section-52'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">184</span> <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_files</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-53'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-53'>#</a>
</div>
<p> රූපයක්ලබා ගන්න</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">186</span> <span class="k">def</span> <span class="fm">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">index</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-54'>
<div class='docs'>
<div class='section-link'>
<a href='#section-54'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">190</span> <span class="n">img</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_files</span><span class="p">[</span><span class="n">index</span><span class="p">])</span>
<span class="lineno">191</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_transform</span><span class="p">(</span><span class="n">img</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-55'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-55'>#</a>
</div>
<p> සෙලෙබාදත්ත කට්ටලය සාදන්න</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">194</span><span class="nd">@option</span><span class="p">(</span><span class="n">Configs</span><span class="o">.</span><span class="n">dataset</span><span class="p">,</span> <span class="s1">&#39;CelebA&#39;</span><span class="p">)</span>
<span class="lineno">195</span><span class="k">def</span> <span class="nf">celeb_dataset</span><span class="p">(</span><span class="n">c</span><span class="p">:</span> <span class="n">Configs</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-56'>
<div class='docs'>
<div class='section-link'>
<a href='#section-56'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">199</span> <span class="k">return</span> <span class="n">CelebADataset</span><span class="p">(</span><span class="n">c</span><span class="o">.</span><span class="n">image_size</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-57'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-57'>#</a>
</div>
<h3>MNISTදත්ත කට්ටලය</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">202</span><span class="k">class</span> <span class="nc">MNISTDataset</span><span class="p">(</span><span class="n">torchvision</span><span class="o">.</span><span class="n">datasets</span><span class="o">.</span><span class="n">MNIST</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-58'>
<div class='docs'>
<div class='section-link'>
<a href='#section-58'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">207</span> <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">image_size</span><span class="p">):</span>
<span class="lineno">208</span> <span class="n">transform</span> <span class="o">=</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Compose</span><span class="p">([</span>
<span class="lineno">209</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Resize</span><span class="p">(</span><span class="n">image_size</span><span class="p">),</span>
<span class="lineno">210</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">ToTensor</span><span class="p">(),</span>
<span class="lineno">211</span> <span class="p">])</span>
<span class="lineno">212</span>
<span class="lineno">213</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">lab</span><span class="o">.</span><span class="n">get_data_path</span><span class="p">()),</span> <span class="n">train</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">download</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">transform</span><span class="o">=</span><span class="n">transform</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-59'>
<div class='docs'>
<div class='section-link'>
<a href='#section-59'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">215</span> <span class="k">def</span> <span class="fm">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">item</span><span class="p">):</span>
<span class="lineno">216</span> <span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__getitem__</span><span class="p">(</span><span class="n">item</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span></pre></div>
</div>
</div>
<div class='section' id='section-60'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-60'>#</a>
</div>
<p> MNISTදත්ත සමුදාය සාදන්න</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">219</span><span class="nd">@option</span><span class="p">(</span><span class="n">Configs</span><span class="o">.</span><span class="n">dataset</span><span class="p">,</span> <span class="s1">&#39;MNIST&#39;</span><span class="p">)</span>
<span class="lineno">220</span><span class="k">def</span> <span class="nf">mnist_dataset</span><span class="p">(</span><span class="n">c</span><span class="p">:</span> <span class="n">Configs</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-61'>
<div class='docs'>
<div class='section-link'>
<a href='#section-61'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">224</span> <span class="k">return</span> <span class="n">MNISTDataset</span><span class="p">(</span><span class="n">c</span><span class="o">.</span><span class="n">image_size</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-62'>
<div class='docs'>
<div class='section-link'>
<a href='#section-62'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">227</span><span class="k">def</span> <span class="nf">main</span><span class="p">():</span></pre></div>
</div>
</div>
<div class='section' id='section-63'>
<div class='docs'>
<div class='section-link'>
<a href='#section-63'>#</a>
</div>
<p>අත්හදාබැලීම සාදන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">229</span> <span class="n">experiment</span><span class="o">.</span><span class="n">create</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="s1">&#39;diffuse&#39;</span><span class="p">,</span> <span class="n">writers</span><span class="o">=</span><span class="p">{</span><span class="s1">&#39;screen&#39;</span><span class="p">,</span> <span class="s1">&#39;labml&#39;</span><span class="p">})</span></pre></div>
</div>
</div>
<div class='section' id='section-64'>
<div class='docs'>
<div class='section-link'>
<a href='#section-64'>#</a>
</div>
<p>වින්යාසයන්සාදන්න </p>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">232</span> <span class="n">configs</span> <span class="o">=</span> <span class="n">Configs</span><span class="p">()</span></pre></div>
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<p>වින්යාසයන්සකසන්න. ශබ්දකෝෂයේ අගයන් සම්මත කිරීමෙන් ඔබට පෙරනිමි අභිබවා යා හැකිය. </p>
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<div class="highlight"><pre><span class="lineno">235</span> <span class="n">experiment</span><span class="o">.</span><span class="n">configs</span><span class="p">(</span><span class="n">configs</span><span class="p">,</span> <span class="p">{</span>
<span class="lineno">236</span> <span class="s1">&#39;dataset&#39;</span><span class="p">:</span> <span class="s1">&#39;CelebA&#39;</span><span class="p">,</span> <span class="c1"># &#39;MNIST&#39;</span>
<span class="lineno">237</span> <span class="s1">&#39;image_channels&#39;</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="c1"># 1,</span>
<span class="lineno">238</span> <span class="s1">&#39;epochs&#39;</span><span class="p">:</span> <span class="mi">100</span><span class="p">,</span> <span class="c1"># 5,</span>
<span class="lineno">239</span> <span class="p">})</span></pre></div>
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<p>ආරම්භකරන්න </p>
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<div class="highlight"><pre><span class="lineno">242</span> <span class="n">configs</span><span class="o">.</span><span class="n">init</span><span class="p">()</span></pre></div>
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<a href='#section-67'>#</a>
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<p>ඉතිරිකිරීම සහ පැටවීම සඳහා ආකෘති සකසන්න </p>
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<div class="highlight"><pre><span class="lineno">245</span> <span class="n">experiment</span><span class="o">.</span><span class="n">add_pytorch_models</span><span class="p">({</span><span class="s1">&#39;eps_model&#39;</span><span class="p">:</span> <span class="n">configs</span><span class="o">.</span><span class="n">eps_model</span><span class="p">})</span></pre></div>
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<p>පුහුණුලූපය ආරම්භ කර ක්රියාත්මක කරන්න </p>
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<div class="highlight"><pre><span class="lineno">248</span> <span class="k">with</span> <span class="n">experiment</span><span class="o">.</span><span class="n">start</span><span class="p">():</span>
<span class="lineno">249</span> <span class="n">configs</span><span class="o">.</span><span class="n">run</span><span class="p">()</span></pre></div>
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<a href='#section-69'>#</a>
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<p> </p>
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<div class="highlight"><pre><span class="lineno">253</span><span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">&#39;__main__&#39;</span><span class="p">:</span>
<span class="lineno">254</span> <span class="n">main</span><span class="p">()</span></pre></div>
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<h1><a href="https://nn.labml.ai/diffusion/ddpm/index.html">විසරණ සම්භාවිතාව ආකෘති නිරූපණය කිරීම (DDPM)</a></h1>
<p><a href="https://colab.research.google.com/github/labmlai/annotated_deep_learning_paper_implementations/blob/master/labml_nn/diffusion/ddpm/experiment.ipynb"><img alt="Open In Colab" src="https://colab.research.google.com/assets/colab-badge.svg"></a></p>
<p>මෙය <a href="https://pytorch.org">PyTorch</a> ක්රියාත්මක කිරීම/නිබන්ධනයකි කඩදාසි <a href="https://papers.labml.ai/paper/2006.11239">Denoising Diffusion Probilistic ආකෘති</a>.</p>
<p>සරළව කිවහොත්, අපි දත්ත වලින් රූපයක් ලබාගෙන පියවරෙන් පියවර ශබ්දය එක් කරමු. ඉන්පසු අපි සෑම පියවරකදීම එම ශබ්දය පුරෝකථනය කිරීමට ආකෘතියක් පුහුණු කර රූප ජනනය කිරීමට ආකෘතිය භාවිතා කරමු.</p>
<p>ශබ්දය සහ <a href="https://nn.labml.ai/diffusion/ddpm/experiment.html">පුහුණු කේතය</a> පුරෝකථනය කරන <a href="https://nn.labml.ai/diffusion/ddpm/unet.html">UNET ආකෘතිය</a> මෙන්න. <a href="https://nn.labml.ai/diffusion/ddpm/evaluate.html">මෙම ගොනුවට</a> පුහුණු ආකෘතියකින් සාම්පල සහ අන්තර්නිවේශනයන් ජනනය කළ හැකිය.</p>
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<h1><a href="index.html">DDPM</a> අත්දැකීම් සඳහා උපයෝගිතා කාර්යයන්</h1>
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<div class="highlight"><pre><span class="lineno">10</span><span></span><span class="kn">import</span> <span class="nn">torch.utils.data</span></pre></div>
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<p>සිතියම්හැඩයට විශේෂාංග කිරීමට <span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.61508em;vertical-align:0em;"></span><span class="mord mathnormal">t</span></span></span></span></span> සහ නැවත සකස් කිරීම සඳහා ගැටුම් එක්රැස් කරන්න </p>
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<div class="highlight"><pre><span class="lineno">13</span><span class="k">def</span> <span class="nf">gather</span><span class="p">(</span><span class="n">consts</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">Tensor</span><span class="p">,</span> <span class="n">t</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">Tensor</span><span class="p">):</span></pre></div>
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<div class="highlight"><pre><span class="lineno">15</span> <span class="n">c</span> <span class="o">=</span> <span class="n">consts</span><span class="o">.</span><span class="n">gather</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="n">t</span><span class="p">)</span>
<span class="lineno">16</span> <span class="k">return</span> <span class="n">c</span><span class="o">.</span><span class="n">reshape</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span></pre></div>
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