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  metric that allows a network to modify its internal notion of

  distance.

  See references [1]_ [2]_ for more details.

  References

  ----------

  .. [1] Matching Networks for One Shot Learning, https://arxiv.org/abs/1606.04080

  .. [2] Order Matters: Sequence to sequence for sets, https://arxiv.org/abs/1511.06391

  .. [1] Vinyals, Oriol, et al. "Matching networks for one shot learning." 

         Advances in neural information processing systems. 2016.

  .. [2] Vinyals, Oriol, Samy Bengio, and Manjunath Kudlur. "Order matters:

         Sequence to sequence for sets." arXiv preprint arXiv:1511.06391 (2015).

  """

  def __init__(self, n_test, n_support, n_feat, max_depth, **kwargs):

  3. Prune conformers using an RMSD threshold.

  Note that pruning is done _after_ minimization, which differs from the

  protocol described in the references.

  protocol described in the references [1]_ [2]_.

  References

  ----------