><span class="p">(</span><span class="n">rate</span><span class="o">=</span><span class="n">nu</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">b</span> <span class="o">+</span> <span class="n">mu</span><span class="o">*</span><span class="bp">self</span><span class="o">.</span><span class="n">s</span><span class="p">),</span> <span class="n">Poisson</span><span class="p">(</span><span class="n">rate</span><span class="o">=</span><span class="n">nu</span><spa