message: Token documentation
diff: .. To get rid of WARNING: document isn't included in any toctree
  -===================================
  -Representations reference manual
  -===================================
  +======================
  +Representations manual
  +======================
  +
  +.. include:: representations_sum.inc
  +
  +This module, originally named sklearn_tda, aims at bridging the gap between persistence diagrams and machine learning tools, in particular scikit-learn. It provides tools, using the scikit-learn standard interface, to compute distances and kernels on diagrams, and to convert diagrams into vectors.
  +
  +A diagram is represented as a numpy array of shape (n,2), as can be obtained from `SimplexTree.persistence_intervals_in_dimension` for instance. Points at infinity are represented as a numpy array of shape (n,1), storing only the birth time.
  +
  +A small example is provided
  +
  +.. only:: builder_html
  +
  + * :download:`diagram_vectorizations_distances_kernels.py <../example/diagram_vectorizations_distances_kernels.py>`
  +
  Preprocessing
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