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Constant input warning in partial correlation reconstructor #201

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Constant input warning in partial correlation reconstructor#201
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questionFurther information is requested
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@sdmccabe
sdmccabe
opened on May 22, 2019

From the tests:

tests/test_reconstruction.py::test_graph_size
tests/test_reconstruction.py::test_partial_correlation
  /home/main/.pyenv/versions/miniconda3-latest/lib/python3.6/site-packages/scipy/stats/stats.py:3399: PearsonRConstantInputWarning: An input array is constant; the correlation coefficent is not defined.
    warnings.warn(PearsonRConstantInputWarning())

Don't recall seeing this before, maybe a new warning in scipy? Plausible that the warning is nothing, but should explore further.

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  1. sdmccabe
    added
    questionFurther information is requested
    on May 22, 2019

  2. sdmccabe commented on May 22, 2019

    @sdmccabe
    sdmccabe
    on May 22, 2019
    CollaboratorAuthor

    I didn't get this warning in an IPython session.

    G = nx.ring_of_cliques(4, 16)
TS = netrd.dynamics.SherringtonKirkpatrickIsing().simulate(G, 1000)
H = netrd.reconstruction.PartialCorrelationMatrix().fit(TS)
  3. sdmccabe
    added this to the 1.0 milestone on Oct 29, 2019

  4. admercs commented on Nov 26, 2019

    @admercs
    admercs
    on Nov 26, 2019

    This simply occurs when one of the input arrays contains constant values:

    pearsonr([0,1,2,3], [0,0,0,0])

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