
## 1.7     6    NA  12.00   [12,Inf)
## 13      6     2  12.52   [12,Inf)
## 14      6     3  13.04   [12,Inf)
## 15      6     3  16.78   [12,Inf)
## 16      6     4  17.28   [12,Inf)</code></pre>
<p>Problem is that the state is unknown at 6 and 12 years if the data are intermittently observed.</p>
<p>We need a new tool to compute the likelihood in this situation…</p>
</div>
<div id="partially-known-states" class="section level2" number="5.5">
<h2><span class="header-section-number">5.5</span> Partially