 / k!) / Z
Z = exp(lambda).
</pre>

<p>where <code>rate = lambda</code> and <code>Z</code> is the normalizing constant.</p>
    <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

    <div class='dont-index'><p>For usage examples see e.g. <code><a href='tfd_sample.html'>tfd_sample()</a></code>, <code><a href='tfd_log_prob.html'>tfd_log_prob()</a></code>, <code><a href='tfd_mean.html'>tfd_mean()</a></code>.</p>
<p>Other distributions: 
<code><a href='tfd_autoregressive.h