marco-congedo/posdefmanifoldml.jl

A Julia Package for Machine Learning on the Manifold of Positive Definite Matrices

posdefmanifoldml.jl's Issues

Register v0.4.5

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Distributions = "0.22.6" needs 0.25

Hi, I recommend installing CompateHelper.jl : https://github.com/JuliaRegistries/CompatHelper.jl

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ERROR: could not load library “C:…\libsvm.dll”

This error may appear at execution time
the first time an SVM model is fitted or is passed to the cvAcc function.

Register v0.4.7

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Error with cvAcc for ENLR

Using cvAcc with ENLR, it may occur that lambda_min_ratio is wrongly estimated, resulting in an error from GLMNet (TaskFailedException: cannot specify both lambda and lambda_min_ratio). This could be avoided by passing the correct value of lambda_min_ratio.

This error is not raised when fitting directly ENLR, it is raised only with cvAcc.

Minimal example:

using PosDefManifoldML

PTr, PTe, yTr, yTe=gen2ClassData(20, 190, 38, 200, 40, 0.1)

cvAcc(ENLR(Fisher), PTr, yTr) # raise TaskFailedException
cvAcc(ENLR(Fisher), PTr, yTr; lambda_min_ratio=1e-4) # works
fit(ENLR(Fisher), PTr, yTr) # works also

My guess is that _getDim (in tools.jl) is not returning the same dimension as the dimension of the ℍVector, when projected in the tangent space (done in _getFeat_fit), resulting in this error message in GLMNet (https://github.com/JuliaStats/GLMNet.jl/blob/master/src/GLMNet.jl#L225)