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<title>Quick Start — MABWiser 2.7.4 documentation</title>
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<section id="quick-start">
<span id="quick"></span><h1>Quick Start<a class="headerlink" href="#quick-start" title="Link to this heading"></a></h1>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># An example that shows how to use the UCB1 learning policy</span>
<span class="c1"># to choose between two arms based on their expected rewards.</span>
<span class="c1"># Import MABWiser Library</span>
<span class="kn">from</span> <span class="nn">mabwiser.mab</span> <span class="kn">import</span> <span class="n">MAB</span><span class="p">,</span> <span class="n">LearningPolicy</span><span class="p">,</span> <span class="n">NeighborhoodPolicy</span>
<span class="c1"># Data</span>
<span class="n">arms</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'Arm1'</span><span class="p">,</span> <span class="s1">'Arm2'</span><span class="p">]</span>
<span class="n">decisions</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'Arm1'</span><span class="p">,</span> <span class="s1">'Arm1'</span><span class="p">,</span> <span class="s1">'Arm2'</span><span class="p">,</span> <span class="s1">'Arm1'</span><span class="p">]</span>
<span class="n">rewards</span> <span class="o">=</span> <span class="p">[</span><span class="mi">20</span><span class="p">,</span> <span class="mi">17</span><span class="p">,</span> <span class="mi">25</span><span class="p">,</span> <span class="mi">9</span><span class="p">]</span>
<span class="c1"># Model</span>
<span class="n">mab</span> <span class="o">=</span> <span class="n">MAB</span><span class="p">(</span><span class="n">arms</span><span class="p">,</span> <span class="n">LearningPolicy</span><span class="o">.</span><span class="n">UCB1</span><span class="p">(</span><span class="n">alpha</span><span class="o">=</span><span class="mf">1.25</span><span class="p">))</span>
<span class="c1"># Train</span>
<span class="n">mab</span><span class="o">.</span><span class="n">fit</span><span class="p">(</span><span class="n">decisions</span><span class="p">,</span> <span class="n">rewards</span><span class="p">)</span>
<span class="c1"># Test</span>
<span class="n">mab</span><span class="o">.</span><span class="n">predict</span><span class="p">()</span>
</pre></div>
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