th arm-specific parameters betas)</span></span>
<span><span class="va">list_betas</span> <span class="op">&lt;-</span> <span class="fu">cramR</span><span class="fu">::</span><span class="fu"><a href="../reference/get_betas.html">get_betas</a></span><span class="op">(</span><span class="va">simulations</span>, <span class="va">d</span>, <span class="va">k</span><span class="op">)</span></span>
<span></span>
<span><span class="co"># Define the contextual linear bandit, where sigma is the scale of the noise in