On Thu, Oct 04, 2012 at 06:39:00AM -0600, Alejandro Weinstein wrote:
> Any reason for this behavior?

It's probably because the lars algorithm is unstable with correlated
regressors. This is a fundamental problem and is not really fixable. In
such a situation, use the 'Lasso' object, that relies on a
coordinate-descent solver, rather than the Lars to solve the lasso
problem.

HTH,

Gaƫl

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