<p>This is related to <a href="https://github.com/mlpack/mlpack/issues/230" class="issue-link" title="Use log-space for DTree::ComputeVariableImportance()">#230</a> (and maybe <a href="https://github.com/mlpack/mlpack/issues/231" class="issue-link" title="Fix volume regularization in DET">#231</a>).</p>

<p>I would agree that log-probability is a good idea.  Maybe it's a good idea to make both available; i.e. leave <code>Probability()</code> intact but also add <code>LogProbability()</code> or something.  That should help keep any downstream consumers from converting to and from logspace unnecessarily.</p>

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