[R] has anyone implemented LARS with the "positive lasso"?

From: David Reiss <dreiss_at_systemsbiology.org>
Date: Sat 06 Jan 2007 - 23:25:43 GMT


Hi,
I am interested in a modification to LARS that allows for positive-only constraints in the variables (with details about how to implement this as described in section 3.4 of the Efron et al (2003) LARS paper).

Before I dive into the "lars" package code myself, I was wondering if anyone knew of a version where this is available, or if another package that I have not found can do this?

Thanks very much for any pointers.

-David

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