trolling the behaviour
of the optimization and Topic SCORE method in the call to
<code>init_poisson_nmf</code>. This is passed as argument "control" to
<code>init_poisson_nmf</code>.</p></dd>


<dt>control.main</dt>
<dd><p>A list of parameters controlling the behaviour
of the optimization in the main model fitting step. This is passed
as argument "control" to <code>fit_poisson_nmf</code>.</p></dd>


<dt>control.refine</dt>
<dd><p>A list of parameters controlling the
behaviour of the of the optimization algo