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Add distances  #26

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Add distances #26
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enhancementNew feature or request

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@lizliz
lizliz
opened on Aug 28, 2024

We'll want to have lots of easy options for comparing ECTS:

  • Standard L_p distances should be a one line command from scipy.distance
  • Version of distance where we find the minimum L_p distance between a pair of matrices where we can spin one of the orientations and get the cheapest alignment. Dan has a version of this from his matisse example but I bet there's a matrix multiplication way to do this way faster.

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  1. lizliz
    added
    enhancementNew feature or request
    on Aug 28, 2024

  2. lizliz commented on Aug 29, 2024

    @lizliz
    lizliz
    on Aug 29, 2024
    ContributorAuthor

    Additional Idea from Dan:

    I was thinking more about PCA alignment. The orientation of a PCA axis is arbitrary, so I was thinking in comparing two ECTs, for one to flip the PC1 axis, flip the PC2 axis, and flip both (so one of the ECTs would now be four) and to take the minimum difference of that as the distance

    And I think this corresponds to just a flip of the ECT matrix along with the rotations/sliding idea. Should be easy to do without recomputing the ECT.

  3. yemeen commented on Oct 2, 2025

    @yemeen
    yemeen
    on Oct 2, 2025
    Member

    implemented in #61

  4. yemeen
    closed this as completedon Oct 2, 2025
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