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William Falcon
2019-11-06 15:08:12 -05:00
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Trainer/Validation loop/index.html
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<link rel="stylesheet" href="../../assets/stylesheets/application.30686662.css">
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<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#check-validation-every-n-epochs" class="md-nav__link">
<a href="#check-validation-every-n-epochs" title="Check validation every n epochs" class="md-nav__link">
Check validation every n epochs
</a>
</li>
<li class="md-nav__item">
<a href="#set-how-much-of-the-validation-set-to-check" class="md-nav__link">
<a href="#set-how-much-of-the-validation-set-to-check" title="Set how much of the validation set to check" class="md-nav__link">
Set how much of the validation set to check
</a>
</li>
<li class="md-nav__item">
<a href="#set-how-much-of-the-test-set-to-check" class="md-nav__link">
<a href="#set-how-much-of-the-test-set-to-check" title="Set how much of the test set to check" class="md-nav__link">
Set how much of the test set to check
</a>
</li>
<li class="md-nav__item">
<a href="#set-validation-check-frequency-within-1-training-epoch" class="md-nav__link">
<a href="#set-validation-check-frequency-within-1-training-epoch" title="Set validation check frequency within 1 training epoch" class="md-nav__link">
Set validation check frequency within 1 training epoch
</a>
</li>
<li class="md-nav__item">
<a href="#set-the-number-of-validation-sanity-steps" class="md-nav__link">
<a href="#set-the-number-of-validation-sanity-steps" title="Set the number of validation sanity steps" class="md-nav__link">
Set the number of validation sanity steps
</a>
@@ -545,35 +545,35 @@
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="#check-validation-every-n-epochs" class="md-nav__link">
<a href="#check-validation-every-n-epochs" title="Check validation every n epochs" class="md-nav__link">
Check validation every n epochs
</a>
</li>
<li class="md-nav__item">
<a href="#set-how-much-of-the-validation-set-to-check" class="md-nav__link">
<a href="#set-how-much-of-the-validation-set-to-check" title="Set how much of the validation set to check" class="md-nav__link">
Set how much of the validation set to check
</a>
</li>
<li class="md-nav__item">
<a href="#set-how-much-of-the-test-set-to-check" class="md-nav__link">
<a href="#set-how-much-of-the-test-set-to-check" title="Set how much of the test set to check" class="md-nav__link">
Set how much of the test set to check
</a>
</li>
<li class="md-nav__item">
<a href="#set-validation-check-frequency-within-1-training-epoch" class="md-nav__link">
<a href="#set-validation-check-frequency-within-1-training-epoch" title="Set validation check frequency within 1 training epoch" class="md-nav__link">
Set validation check frequency within 1 training epoch
</a>
</li>
<li class="md-nav__item">
<a href="#set-the-number-of-validation-sanity-steps" class="md-nav__link">
<a href="#set-the-number-of-validation-sanity-steps" title="Set the number of validation sanity steps" class="md-nav__link">
Set the number of validation sanity steps
</a>
@@ -647,16 +647,25 @@ Lightning will run 5 steps of validation in the beginning of training as a sanit
<hr />
<h4 id="set-validation-check-frequency-within-1-training-epoch">Set validation check frequency within 1 training epoch</h4>
<p>For large datasets it's often desirable to check validation multiple times within a training loop</p>
<p>For large datasets it's often desirable to check validation multiple times within a training loop.
Pass in a float to check that often within 1 training epoch.
Pass in an int k to check every k training batches. Must use an int if using
an IterableDataset.</p>
<table class="codehilitetable"><tr><td class="linenos"><div class="linenodiv"><pre>1
2
3
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5</pre></div></td><td class="code"><div class="codehilite"><pre><span></span><span class="c1"># DEFAULT</span>
5
6
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8</pre></div></td><td class="code"><div class="codehilite"><pre><span></span><span class="c1"># DEFAULT</span>
<span class="n">trainer</span> <span class="o">=</span> <span class="n">Trainer</span><span class="p">(</span><span class="n">val_check_interval</span><span class="o">=</span><span class="mf">0.95</span><span class="p">)</span>
<span class="c1"># check every .25 of an epoch </span>
<span class="n">trainer</span> <span class="o">=</span> <span class="n">Trainer</span><span class="p">(</span><span class="n">val_check_interval</span><span class="o">=</span><span class="mf">0.25</span><span class="p">)</span>
<span class="c1"># check every 100 train batches (ie: for IterableDatasets or fixed frequency)</span>
<span class="n">trainer</span> <span class="o">=</span> <span class="n">Trainer</span><span class="p">(</span><span class="n">val_check_interval</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>
</pre></div>
</td></tr></table>
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