tor='val_loss', reduce_factor=2, max_momentum=0.95, min_momentum=0.85, verbose=1)</span>
</code></dt>
<dd>
<div class="desc"><p>This callback implements a cyclical learning rate policy (CLR).
The method cycles the learning rate between two boundaries with
some constant frequency, as detailed in this paper (<a href="https://arxiv.org/abs/1506.01186">https://arxiv.org/abs/1506.01186</a>).
The amplitude of the cycle can be scaled on a per-iteration or
per-cycle basis.
This class has three built-in policies, as