mma</span><span class="op">(</span>data <span class="op">=</span> <span class="va">hmm_poison_data</span>,</span>
<span class="r-in">                                                pi <span class="op">=</span> <span class="va">pi</span>,</span>
<span class="r-in">                                                mat_T <span class="op">=</span> <span class="va">mat_T</span>,</span>
<span class="r-in">                                                betas <span class="op">=</span> <span class="va">betas</span>,<